Mounjaro

When it comes to weight loss injections, Mounjaro and Wegovy are two of the biggest names on the market. If you’ve been researching your weight loss options, you’ve likely come across both, but what is it that sets them apart? Is one injection more effective or better tolerated than the other?In this guide, we compare Mounjaro vs Wegovy, highlighting similarities, differences, and considerations for switching between them. Whatever your circumstances and weight loss goals may be, we’re here to help you take the next step. Read on to find out more.  Compare Treatment Cost NowWhat are Mounjaro and Wegovy?Mounjaro and Wegovy are self-administered, prescription-only weight loss medications that work by mimicking digestive hormones that regulate appetite and blood sugar levels. When combined with healthy lifestyle changes, either approach yields greater weight loss benefits than diet and exercise alone. Despite belonging to the same family of drugs, glucagon-like peptide-1 (GLP-1) agonists have slightly different actions. Wegovy contains the active ingredient semaglutide, a GLP-1 receptor agonist that reduces appetite and calorie intake. Originally, it was developed to treat type 2 diabetes because of its benefits on blood sugar regulation, and has since been licensed for weight loss in obese and overweight people with related health conditions.  {add_product_block(380)} Mounjaro, however, contains tirzepatide, which has a dual action, binding to both GLP-1 and glucose-dependent insulinotropic polypeptide (GIP) receptors, enhancing its effects on weight loss and blood sugar control. {add_product_block(437)} Both Wegovy and Mounjaro are administered once per week via subcutaneous injection.What is the Difference Between Wegovy and Mounjaro?The primary differences between Mounjaro and Wegovy lie in their active ingredients and mechanisms of action. Mounjaro contains tirzepatide, which targets two receptors, while Wegovy contains semaglutide and targets just one. These differences may explain why Mounjaro is considered more effective for weight loss.We discuss the differences between Mounjaro and Wegovy in more detail below. Active IngredientsTirzepatide, the active ingredient in Mounjaro, acts on two receptors in the brain, GLP-1 and GIP, making it a dual agonist, and enhancing its weight loss effects. Weogvy’s active ingredient only binds to the GLP-1 receptors in the brain. Here's an illustration of how Wegovy works to help with weight loss:   Mounjaro, meanwhile, works like this:  Although the active ingredients differ, both weight loss injections function as appetite suppressants, signalling to your brain when you feel full and delaying stomach emptying. They also manage blood sugar levels, which can have a positive effect on your appetite and overall metabolic health. EffectivenessWhether you choose Mounjaro or Wegovy, you’ll be safe in the knowledge that both have undergone rigorous testing in clinical trials to prove their effectiveness and safety.At the highest dose, Mounjaro can help you lose up to 22.5% of your initial body weight after 72 weeks, compared to 15% on the 2.4 mg strength of Wegovy over 68 weeks. We will discuss the effectiveness of Mounjaro and Wegovy in more detail later. Despite differences in effectiveness in clinical trials, the figures represent an average outcome, and individual weight loss experiences can vary. Equally, just because Mounjaro appears to bring about greater weight changes doesn’t necessarily mean it is the best option for you. That’s why an in-depth consultation with a clinician is critical to help you find the most effective option for you based on your individual circumstances. Cardiovascular Assistance As things stand, Wegovy is the only weight loss injection that is licensed in the UK to reduce the risk of serious heart problems or strokes in overweight and obese adults. This additional indication was based on results from a multinational clinical trial showing that Wegovy reduced the risk of major adverse cardiovascular events (MACE) by 20%.A study published in 2025 found that Mounjaro was non-inferior to a medicine called Trulicity (dulaglutide) when it comes to the development of MACE-3 (cardiovascular death, heart attack, and nonfatal stroke) events. Trulicity has already been shown to reduce the incidence of cardiovascular events in previous trials. Despite this result, Mounjaro is not yet licensed in the UK for cardiovascular issues. Impact on Oral Contraceptives Semaglutide (Wegovy) and other active ingredients, such as liraglutide (Nevolat), do not affect the bioavailability of oral contraceptives. This means that women of childbearing age do not need to also use a barrier method of contraception (such as condoms) if they’re already taking the combined pill or mini pill. Mounjaro users, on the other hand, are advised to use a non-oral form of contraception to ensure they remain fully protected against the chances of becoming pregnant. DosageWhen you start your treatment, you’ll be given a dosage schedule for either Mounjaro or Wegovy. The dosage schedule varies slightly for each medication, but we’ll discuss this in more detail later. 
 [medical_form product_id="437" text="START YOUR MOUNJARO CONSULTATION TODAY" type="button"]
 ManufacturerMounjaro and Wegovy are made by different manufacturers. Mounjaro is manufactured by the North American pharmaceutical company Eli Lilly, while Wegovy is produced by the Danish company Novo Nordisk.Mounjaro vs Wegovy: The SimilaritiesNot everything about Wegovy and Mounjaro is different. They also share several similarities, including:Route of AdministrationWhether your preferred injection is Mounjaro or Wegovy, both are subcutaneous injections supplied in multidose pens. That means each pen already has the exact dose of medication you need within it, so there are no complicated drawing-up procedures like you may have witnessed in your GP surgery. Instead, each pen is loaded with four weeks' worth of medication and dispenses it conveniently in four equal doses. [medical_form product_id="380" text="START YOUR WEGOVY CONSULTATION TODAY" type="button"]  We’ve put together some guides to give you a better idea about how to inject Wegovy or how to use Mounjaro before you commit to treatment.Injection SiteMounjaro and Wegovy can be injected into 3 main sites:Stomach: Make sure you inject the dose at least 2 inches away from your belly buttonThigh: Divide each thigh in half horizontally and rotate the injection sites weeklyUpper arm: You’ll need to get someone to help you inject the medication into the back of your upper armA Prescription is RequiredNeither Wegovy nor Mounjaro is available over the counter, so you will need a consultation with your doctor or an online pharmacy like Prescription Doctor to obtain a prescription.This ensures that the medication is safe and suitable for you to take and that you satisfy the eligibility criteria. To get Mounjaro or Wegovy from Prescription Doctor, you will need:a body mass index (BMI) of at least 30 ora BMI between 27 and 30, plus at least one weight-related health condition such as high blood pressure
to be over 18TitrationWeight loss medication, like all medicines, can cause side effects, and it may take some time for your body to adjust. For this reason, you’ll always begin your treatment with the lowest Mounjaro or Wegovy dose, which will increase every four weeks until you reach the maximum maintenance dose suitable for you.However, your treatment journey may take a little longer, or you may find you don’t need the highest dose to achieve your weight loss goals. Some people stick to a lower dose because it works for them. Your clinician will provide support throughout your treatment and help you determine if you need to adjust your dose at the usual intervals.Mounjaro to Wegovy Dose Conversion ChartThe dosage schedules for Mounjaro and Wegovy differ slightly, reflecting the differences in their active ingredients and also how they work. Although they share several similarities, each medication comes in different strengths and has a unique titration schedule. The table below compares the dosage differences between Mounjaro and Wegovy: MonthMounjaro (mg/week)Wegovy (mg/week)12.50.25250.537.514101.7512.52.46157.2 The starting dose for Wegovy is 0.25 mg once weekly for the first 4 weeks, and it is gradually increased every 4 weeks until you reach the maximum maintenance dose of 7.2mg/week, as shown below. However, if you find that the lower 1.7 mg/week or 2.4mg/week strengths are effective for you, or you're experiencing side effects with the 7.2 mg dose, you can stick to the lower dose.If you follow the dosage schedule below, you should reach the maximum dose at week 21.  Mounjaro treatment begins at 2.5 mg/ week and gradually increases every four weeks until you reach the maximum dose that’s right for you. Although the maximum dose is 15 mg/week, some people prefer a lower dose because it is effective for them or because they experience side effects at higher doses. It’s all about working out what’s best for you. Your clinician will help you do this.   Wegovy vs Mounjaro Cost ComparisonCost can be a major factor when deciding which weight loss injection is best for you. Wegovy and Mounjaro prices can vary depending on several factors, including where you live, whether you’re paying privately for your prescription, or if you’re receiving NHS funding.At Prescription Doctor, we’re taking the stress out of researching which is the most cost-effective option by showing you a side-by-side comparison of what you can expect to pay for either injection from us below: Wegovy Pack sizeDosagePricex 1 Pen Starter Pack0.25mg£109.99x 1 Pen Continuation Pack0.5mg£119.99x 1 Pen Continuation Pack1mg£139.99x 1 Pen Continuation Pack1.7mg£164.99x 1 Pen Maintenance Pack2.4mg£184.99x 1 Pen Maintenance Pack7.2mg£349.993 Month Supply1 x 0.25mg
1 x 0.5mg
1 x 1.0mg£339.99 {add_product_block(380)} Mounjaro Pack SizeDosagePriceStarter2.5 mg£169.99Maintenance5.0 mg£199.99Maintenance7.5 mg£249.99Maintenance10.0 mg£279.99Maintenance12.5 mg£289.99Maintenance15.0 mg£298.99 {add_product_block(437)} Now that we’ve outlined the pricing structure at Prescription Doctor, let’s run some Wegovy vs Mounjaro cost comparisons so you have a better idea of what to expect. We’ll look at the price of each medication over 12 and 24 months, while also examining which treatment offers the greatest weight-loss potential for your money. Mounjaro vs Wegovy Annual CostThe table and graph below compare the cost of Mounjaro and Wegovy when following the typical dosing schedules for each treatment. We’ll calculate prices for 12 and 24 months, so you can see how much the medications may cost over the course of your weight-loss journey. WegovyMounjaroTitration Schedule0.25 mg
0.5 mg
1 mg
1.7 mg
2.4 mg
7.2 mg2.5 mg
5 mg
7.5 mg
10 mg
12.5 mg
15 mgMaintenace Dose(s)2.4mg
7.2 mg10 mg
12.5 mg
15 mgCost of Titration £719.95 - £969.94
(2.4 mg - 7.2 mg)£899.96 - £1,488.94
(10 mg - 15 mg)12 Month Cost (titration + maintenance)£2,6014.88 - £2,469.88
(2.4 mg - 7.2 mg)£3139.88 - £3282.88
(10 mg - 15 mg)24 Month Cost (titration + maintenance)£4,234.76 - £5,469.76
(2.4 mg - 7.2 mg)£6,499.76 - £6,870.76
(10 mg - 15 mg) Wegovy vs Mounjaro Cost-Effectiveness When determining how cost-effective a weight loss treatment actually is, it’s important to take into account the potential results you could achieve. This is because you may feel it’s worth paying a little more if you could expect to lose more bodyweight per month.To illustrate this, let’s take a look at a clinical trial that compared weight loss with Wegovy vs Mounjaro over 72 weeks (18 months). The results from the SURMOUNT-5 study are as follows:OutcomeMounjaroWegovyAverage Weight Loss50.3 lbs (22.8 kg)33.1 lbs (15.0 kg)Average % Weight Loss20.2%13.7%>25% Weight Loss31.6%16.1%Waist Circumference Reduction18.4 cm13.0 cm  In the trial, participants were given either the maximum tolerated dose of tirzepatide (10 mg or 15 mg) or what was the maximum tolerated dose of semaglutide at the time (1.7 mg or 2.4 mg). Taking this information, let’s calculate how the cost of each treatment compares to the amount of weight you could lose. First of all, we'll look at Wegovy:  Metric1.7 mg2.4 mg18-Month Total Spend£2,844.82£3,124.82Average % Weight Loss13.7%13.7%Cost Per 1% Weight Lost£207.65£228.09 Now we'll compare that to Mounjaro: Metric10 mg15 mg18-Month Total Spend£4,819.82£5,076.82Average % Weight Loss20.2%20.2%Cost Per 1% Weight Lost£238.60£251.33 As you can see, although you can obtain Wegovy at a lower monthly cost, Mounjaro's greater average weight loss makes it more cost-effective in the long run. Ultimately, comparing Mounjaro vs Wegovy in terms of price comes down to whether you value a lower monthly price point or prefer more ‘bang for your buck’. Wegovy and Mounjaro Side EffectsWegovy and Mounjaro side effects are similar, with the following being the most common:feeling sick (nausea)being sick (vomiting)constipationdiarrhoeastomach painweakness or tiredness headacheIn most cases, these side effects are mild and improve or resolve once your body becomes accustomed to the medication. However, if you’re concerned, it is advisable to speak with your clinician or pharmacist for further guidance.What’s Better: Wegovy or Mounjaro?Despite both delivering positive results, Mounjaro is considered more effective for weight loss thanks to its dual-action mechanism. Studies show that a greater proportion of participants lost at least 5% of their body weight over 72 weeks on the highest Mounjaro dose than over 68 weeks on Wegovy. However, that doesn’t necessarily mean it’s the best choice for everyone.In the SURMOUNT-1 trial, 91% of people who received the maximum maintenance dose of 15 mg per week lost at least 5% of their starting body weight, compared with 35% on placebo. The study also found that after 72 weeks:The 5 mg per week dose helped people lose 16% of their starting body weightPeople given 10 mg per week lost 21.4% of  their initial weightThe 15 mg per week dose induced a 22.5% weight lossThe STEP-1 trial, on the other hand, investigated the effectiveness of Wegovy and found that after 68 weeks, the average weight loss on the maintenance dose of 2.4 mg per week was 15%. More people who received semaglutide lost at least 5% of their starting body weight compared to those who received a placebo (86% vs 32%).Regardless, both medications require long-term use to maintain weight loss, and a commitment to healthy lifestyle changes—including dietary changes and increased physical activity—is necessary to achieve the best results. It’s also important to understand the stages of weight loss so you know what to expect when using weight loss medication. How to Choose Between Wegovy and MounjaroChoosing between Mounjaro and Wegovy will depend on several factors that are unique to you. There’s no denying that both weight loss injections are safe and effective, particularly when used alongside a diet and exercise plan, but knowing which one is right for you will depend on things like your:Preference: You may prefer one treatment over another based on reviews, research, or testimonials.Medical history: You may be allergic to the ingredients of one injection, making the other a more suitable option. Alternatively, if you have type 2 diabetes, Mounjaro may be more effective.Cost and availability: Increased demand for these medications may influence your decision about whether Mounjaro or Wegovy is better. Likewise, the long-term cost may also be a deciding factor. Side effects: If you start one treatment and experience intolerable side effects, the clinician may recommend switching to the other.If you’re still unsure which option is right for you, don’t worry - our clinicians are here to help. They’ll walk you through the most suitable option, taking into account your medical history, current medications, and any other concerns you may have. Wegovy and Mounjaro Weight Loss: Before and AfterMounjaro and Wegovy have yielded impressive weight loss results in both clinical trials and real-world use. Many people report feeling fuller sooner, experiencing reduced cravings, and experiencing gradual, consistent weight loss. Considering the real-life experiences of other Wegovy or Mounjaro users can give you a clearer understanding of what to expect during treatment and make your decision easier.These reviews are great, but we’re betting you want to “see” the results, right? Well, you can. Browse our ‘Mounjaro Before and After’ page to discover how, in just 16 months, one user lost a remarkable 37 kg and how another lost 9.5 kg in her first five weeks of Mounjaro treatment.  {add_product_block(437)} What about Wegovy before and after? Discover how, in just one year, one user smashed their weight loss goal by shedding 45 kg. While another reduced their weight by almost 25 kg in five months.  {add_product_block(380)} These stories are not anomalies. So many people are reporting significant weight loss with Wegovy or Mounjaro; why not be the next? Mounjaro vs Wegovy ReviewsBefore-and-after photos are useful when weighing your weight loss options, but you can also use our patient reviews to enhance your decision-making.Most people who have left Mounjaro reviews are pleased with the results and service they received, rating Mounjaro 4.7 out of 5 stars. Just look at what one patient had to say about Mounjaro:“It's amazing, no side effects, hardly any appetite, calorie deficit every day. Full for longer even though I only eat small amounts. Weight loss steady each week, better that Saxenda, and Ozempic in my opinion” – Karen HardyWegovy has also earned a whopping 4.7 out of 5 stars from Prescription Doctor patients. Here’s just one of the Wegovy reviews we’ve received:"Wegovy is brilliant and works so well. It’s been a very positive experience using it and losing weight. I’ve always struggled with my weight, but this has helped me shed the weight.” – KatCan You Switch Between Wegovy and Mounjaro?Yes, switching from Wegovy to Mounjaro, or vice versa, permanently is possible under your clinician's guidance, but you can’t alternate between the two weight loss injections. Switching between Wegovy and Mounjaro will require you to start on the lowest dose and titrate up, even if you are currently on the highest dose of the other.Whichever you are switching from and to, you will always need to leave five weeks between finishing your current treatment and starting the new weight loss medication. This allows the active ingredient in your current medication enough time to leave your system and prevent any drug interactions.You might think about switching from Wegovy to Mounjaro or vice versa if you:Aren’t achieving the weight loss results you were expecting despite following a diet and exercise plan and taking the medication correctly Are experiencing side effects that aren’t going away or are difficult to manageHave tried Wegovy before Mounjaro was released, and would now like to try MounjaroAre concerned about the cost of your current medicationCan You Take Wegovy and Mounjaro Together?No, you cannot take Wegovy and Mounjaro together because it can increase the risk of side effects and may put your health in danger. Because Mounjaro and Wegovy act on similar pathways, combining the two will not enhance their benefits; therefore, it's essential to choose the one that’s best for you and stick to it.If one medication isn’t as effective as you’d like it to be or is causing you side effects, switching rather than combining is recommended. Speak to your clinician about changing your weight loss medication.Why Buy Mounjaro and Wegovy From Prescription DoctorWhen it comes to choosing between Wegovy and Mounjaro, there’s no one-size-fits-all approach. Both are effective weight loss medications, and their similarities, differences, and benefits overlap. The best choice for you will depend on your personal health goals, circumstances and your clinician’s advice. That’s where Prescription Doctor comes in. We’ll give you all the support you need to achieve your targets. {add_product_block(437)} After completing an online consultation, our clinician will help you determine the best treatment option based on your medical history. We’ll then deliver your medication, as quickly as the next working day in some cases, in plain, discreet packaging.Since 2013, we’ve supported many people in reaching their health goals. We’re also fully regulated by the General Pharmaceutical Council (GPhC), so you know we’re a provider you can trust. {add_product_block(380)} Already know the answer to the Mounjaro vs Wegovy question?  Start your weight loss consultation today. SourcesNEJM (2025): Tirzepatide as Compared with Semaglutide for the Treatment of Obesity. Eli Lilly (2024): Lilly's tirzepatide superior to Wegovy® (semaglutide) in head-to-head trial showing an average weight loss of 20.2% vs. 13.7%. Clinical Trials.gov (2024): A Study of Tirzepatide (LY3298176) in Participants With Obesity or Overweight (SURMOUNT-1)EMC (2025): Mounjaro KwikPen 2.5mg solution for injection in a pre-filled pen.EMC (2024): Wegovy 2.4 mg, FlexTouch solution for injection in a pre-filled pen.NEJM, (2022). Tirzepatide Once Weekly for the Treatment of Obesity.NEJM (2021): Once-Weekly Semaglutide in Adults with Overweight or Obesity.UK Government (2024): MHRA approves GLP –1 receptor agonist semaglutide to reduce risk of serious heart problems in obese or overweight adults. NEJM (2023): Semaglutide and Cardiovascular Outcomes in Obesity without Diabetes. NEJM (2025): Cardiovascular Outcomes with Tirzepatide versus Dulaglutide in Type 2 Diabetes.The Lancet (2019): Dulaglutide and cardiovascular outcomes in type 2 diabetes (REWIND). College of Sexual and Reproductive Healthcare (2025): Glucagon-like peptide-1 (GLP-1) agonists and oral contraception. PubMed (2015): Semaglutide, a Once-Weekly Human GLP-1 Analog, Does Not Reduce the Bioavailability of the Combined Oral Contraceptive, Ethinylestradiol/Levonorgestrel. MHRA (2025): Women on “skinny jabs” must use effective contraception, MHRA urges in latest guidance.  

If you’re interested in Mounjaro, you’re probably already aware of its potential health benefits. Mounjaro is one of several weight loss injections licensed for prescription in the UK, and can promote significant weight reduction by reducing appetite and calorie intake. There’s no doubt that Mounjaro is a highly effective weight loss tool, but how do you inject it?Deciding to use an injectable medication requires careful consideration. While Mounjaro is perfectly safe to inject at home, it’s important to understand how to do so correctly. Here, we’ll discuss how to inject Mounjaro, how to use Mounjaro pens, and potential injection sites. [medical_form product_id="437" text="START YOUR MOUNJARO CONSULTATION TODAY" type="button"] Injection Sites for MounjaroMounjaro is injected subcutaneously (under the skin) of the upper arm, upper thigh, or stomach, at least 5 cm from the navel. If you plan to inject yourself, the stomach and upper thighs are usually the easiest places to reach. If you want to inject into your upper arm, you may need someone else to help you.You can use the same body part every week if you like, but you’ll need to use a different Mounjaro injection site within that area. If you also inject insulin, choose a different injection site for your Mounjaro dose.How to Use Mounjaro Pens: Instruction VideoFor a step-by-step guide on how to inject Mounjaro, watch the video below. If you'd prefer written instructions, our guide has you covered.     How to Prepare for Mounjaro InjectionsGetting to grips with how to inject Mounjaro is a straightforward process when you prepare beforehand.Before injecting Mounjaro, you should gather your supplies, choose your injection site, and wash your hands. You should also inspect the pen for signs of damage and ensure you have the correct dose. Here's how to prepare for Mounjaro injections:Gather Supplies  First, gather all the necessary items to administer your injection. These include:Your Mounjaro penA Mounjaro pen needleA swabA cotton ballSkin-friendly alcohol wipesA sharps containerWash Your Hands  Wash your hands thoroughly with soap and warm water before you inject Mounjaro. This will reduce your risk of infection.Choose and Clean the Injection Site  You can inject Mounjaro under the skin of your stomach (at least 5 cm from your belly button), upper thigh, or upper arm. Once you’ve chosen your injection site, clean the area with an alcohol wipe to disinfect the skin and limit your risk of infection. You should rotate your injection sites with every dose to prevent hard lumps from developing under your skin. Here are some specific tips for each potential location:Stomach: Avoid scar tissue and stay at least two inches away from your belly button.     Back of your upper arm: You may need someone to help you reach.      Thigh: Choose a different area for every dose to minimise the risk of scar tissue or injection. Don’t inject into areas where your skin is irritated or bruised.Inspect the Pen  Inspect your Mounjaro pen carefully before you administer the injection. Do not use the medication if the:Medication name or dose strength is incorrectProduct has expiredPen has visible damageMedication is frozen, cloudy, discoloured, or has bits in it (it should be colourless or slightly yellow)Don’t worry if you see little air bubbles in the medication, as these are removed during the priming stage described below. {add_product_block(437)} How to Prime Mounjaro PensOnce the necessary preparations have been made, the next step in our guide on how to inject Mounjaro is the priming phase. This process is crucial, as it removes air bubbles from the medicine and ensures the pen is working correctly. Here's how to prime Mounjaro pens:Remove the Cap  Remove the pen cap by pulling it straight off, and clean the inner seal with a swab.Insert the Needle  You’ll need to use a new pen needle for each injection to minimise your risk of infection or needle blockage. Once you’ve selected a needle, pull the paper tab off the outer needle shield (but leave the shield in place). Next, fix the needle to the pen by pushing it straight on and twisting until it’s securely attached.Now that your needle is attached to the pen, you can remove the outer needle shield. Underneath, you’ll find a smaller, inner needle shield. Remove and discard this, but keep the outer needle shield, as it can be reused.Prime the Pen  To prime the Mounjaro pen for injection, slowly turn the knob until you hear two clicks and the extended line appears in the dose window. Next, hold the pen with the needle pointing up and gently tap the cartridge holder. This will cause any air bubbles to rise to the top of the cartridge.Finally, release some medicine from the pen by compressing the dose knob and slowly counting to five. This process removes air from the cartridge, ensuring the pen operates properly. You'll know your pen is primed when a small amount of medicine appears at the tip of the needle. The ‘0’ icon must also be shown in the dose window. Do not inject medication into your body at this stage. Select the Correct Dosage  To select your Mounjaro dosage, turn the dose knob until it stops and a ‘1’ appears in the dose window. This indicates a 0.6 ml dose of Mounjaro.Mounjaro is administered according to a specific dosing schedule, and the amount of tirzepatide in each 0.6 ml dose varies depending on your schedule. Mounjaro pens are available in six dosages: 2.5 mg, 5 mg, 2.7 mg, 10 mg, 12.5 mg, and 15 mg. {add_product_block(437)} How to Use the Mounjaro PenThe final stage in our guide about how to inject Mounjaro is administering the injection itself. Once the pen is primed, you're ready to inject the medication. Get into a comfortable position before following the steps below:Position the Pen  Prepare to inject your Mounjaro by positioning the needle over the skin of your chosen injection site. If you are nervous about administering your injection, you may tense up. Try to do something to relax, such as listening to soothing music. Sitting rather than standing can also help to relax your muscles.Administer the Injection  Insert the needle into your skin and inject the medicine by pushing the dose knob until it stops. Slowly count to five while holding down the dose knob until a ‘0’ appears in the dose window. Don’t remove the needle until you see the ‘0.’Remove the Pen  Gently remove the needle from your skin. Don’t worry if you see a drop of medicine at the tip of the needle; this is normal and won’t affect your dose.Make sure you can see the ‘0’ in the dose window, as this indicates you have received the full dose. If you don’t see the ‘0’ icon, re-insert the needle and complete the injection. Don’t redial the dose or repeat the injection, as this could result in a larger dose than intended.Once your injection is complete, you can carefully replace the outer needle shield. Check the Injection Site  Have a look at your injection site after you’ve administered Mounjaro. If you see a drop of blood, lightly press the injection site with a cotton ball. Finally, wash your hands again with soap and water.How to Remove the Needle from Mounjaro PensYou should always remove the needle from your Mounjaro pen before putting it away. Doing so helps prevent leakage and needle blockage, and stops air from entering the pen during storage.To remove it, simply unscrew the capped needle from the pen and place it in a yellow sharps container. Never reuse needles. Your local council may be able to collect and dispose of used needles and other medical waste. Finally, replace the pen cap before storing your Mounjaro. {add_product_block(437)} How to Inject Mounjaro: Frequently Asked QuestionsUnderstanding how to inject Mounjaro is relatively straightforward once you are familiar with the procedure. However, you may still have questions, like ‘What if I forget to prime my pen?’ and ‘How do I know if I administered the dose correctly?’We’ll discuss the answers to these questions and more below.Do You Have to Prime Mounjaro Every Time?It’s essential that you prime your Mounjaro pen before each injection. Completing this process removes air from the pen cartridge, ensuring you administer the correct dose. It also confirms that the needle is not blocked and the pen is working correctly. I Forgot to Prime My Mounjaro Pen. What Happens?You should prime your Mounjaro pen before each injection to ensure the needle and pen are functioning properly. If you inject without priming the pen first, you may not receive the full dose of Mounjaro, or you could even end up breaking the pen itself. If you have concerns about any of your Mounjaro injections, reach out to our licensed clinicians for advice.Can I Reuse Mounjaro Needles?No, it’s not advised to reuse Mounjaro needles. Using a new needle for each injection reduces your risk of infection and needle blockage, things that can either impact your weight loss journey or your health. It’s therefore important to dispose of used needles in a sharps container after each use.Can You Double Dose Mounjaro?You must not take a double dose of Mounjaro. It won’t make the medication more effective, but it may lead to increased side effects. If you think you’ve taken too much Mounjaro, you should speak to a healthcare professional for advice.For more information about the side effects of Mounjaro and how long they last, please check out our guides. How Do I Store Mounjaro?Store any unused Mounjaro pens in the refrigerator (between 2°C and 8°C). Used pens, however, can be kept at room temperature (up to 30°C). You can store your Mounjaro pen at room temperature for up to 30 days after your first injection.Keep your Mounjaro pen away from extreme heat or cold. If frozen, discard the pen. You should also store the pen in its original packaging to protect it from light exposure.How to Know if I Injected Mounjaro Correctly?Once you’ve primed your Mounjaro pen, you will turn the dosing knob until it stops and a ‘1’ icon appears in the dose window. This indicates a full 0.6 ml dose. After you inject Mounjaro, the dose window should show a ‘0’ instead. This indicates that you have successfully administered the full dose.If you don’t see a ‘0,’ re-insert the needle and push the dose knob to inject the rest of the medicine.Should You Let Mounjaro Warm Up Before Injecting?You can inject Mounjaro straight from the refrigerator, if you like. However, allowing the medicine to warm up a little can make it more comfortable to inject. Don’t try to warm your Mounjaro pen by applying heat. Instead, let it sit at room temperature for 30 minutes before administering the injection.Prescription Doctor: Your Reliable Weight Loss PartnerIf you’re thinking about embarking on a weight loss journey, the good news is that you don’t need to go through it alone. Since 2013, we at Prescription Doctor have supported countless people in achieving their goals, and we stand ready to do the same for you.   We understand that there’s no one-size-fits-all solution when it comes to weight loss. That’s why our team of expert clinicians take the time to understand your unique circumstances and recommend what they believe will be the best treatment options for you.In addition, we offer a comprehensive weight loss consultation service designed to support you every step of the way. From providing guides on how to inject Mounjaro and suggested exercise routines, to recommending diet plans and tips and tricks for success, you can get it all with us.But that’s not all. Our clinicians will also regularly check in with you to monitor your progress and help you stay on track. This even extends to recommending alternative solutions such as Wegovy and Nevolat if you’re not managing with Mounjaro. It’s all part of the service.Ready to get started on your Mounjaro journey? Simply complete our online medical questionnaire, and our team will assess your suitability for treatment. If approved before 3pm on a weekday, your order will be dispatched for next-day delivery in discreet packaging. Begin your consultation today.  SourcesPubMed (2023): Tirzepatide Reduces Appetite, Energy Intake, and Fat Mass in People With Type 2 Diabetes. EMC: Mounjaro Package Leaflet.FDA: Highlights of Prescribing Information. EMC: Instructions for Use. UK Government: Request clinical waste collection. PubMed (2023): Adverse Events Related to Tirzepatide. EMA: Summary of Product Characteristics. 

Mounjaro (tirzepatide) is one of the UK’s most popular weight loss injections and is widely considered a safe and effective way to lose weight. Research reports that people on Mounjaro can lose over 20% of their total body weight, significantly reducing their long-term risk of weight-related health conditions. However, like all medications, Mounjaro also has the potential to cause side effects.The most common side effects of Mounjaro are gastrointestinal symptoms, which are thought to affect the majority of people using weight loss injections. These side effects are usually mild to moderate and tend to improve with time, but they can be uncomfortable to live with. So, how long do Mounjaro side effects last, and is there anything you can do to reduce them in the meantime? [medical_form product_id="437" text="START YOUR MOUNJARO CONSULTATION TODAY" type="button"] Potential Side Effects of Mounjaro InjectionsGastrointestinal symptoms are the most common side effects of Mounjaro and include nausea, vomiting, diarrhoea, constipation, and indigestion. In rare cases, Mounjaro treatment can trigger serious health problems affecting the pancreas, kidneys, and gallbladder. People using Mounjaro also have a higher risk of hypoglycemia (very low blood sugar), especially if they also use anti-diabetic medications.The side effects of Mounjaro are typically mild to moderate and improve within days of treatment initiation and dose increases. Severe or persistent side effects may indicate a more serious medical issue and should be reported to a licensed clinician. When Do Mounjaro Side Effects Start?The gastrointestinal side effects of Mounjaro usually occur at the start of treatment and around dose increases. The exact timing of side effects varies between individuals, but some people may experience symptoms from the day of their first injection.  Mounjaro Day 1 Side EffectsGastrointestinal symptoms usually begin soon after people start using Mounjaro, and may even show up on day 1 of treatment. Nausea is the most common side effect of Mounjaro, affecting over 20% of users. Another frequent early side effect of Mounjaro is diarrhoea, which is reported in more than 16% of people using this medication.Mounjaro Week 2 Side EffectsThe side effects of Mounjaro usually flare up around the start of treatment and when the user increases their dose. They are reported to diminish over time, so by week 2 of treatment, many Mounjaro users will have noticed a significant improvement in their symptoms. Mounjaro Dose Increase Side EffectsMounjaro side effects are dose-dependent, and higher doses are associated with a greater incidence of gastrointestinal symptoms. As a result, most people will notice an upswing in side effects every four weeks when they increase their dose. However, these will fade with time as they do at the start of treatment.The Mounjaro dosage schedule is as follows:  Side Effects of Coming Off MounjaroThere are no reported withdrawal symptoms of coming off Mounjaro. However, people coming off weight loss injections typically experience increased hunger, as the appetite-suppressing effects of the drugs wear off. This can lead to weight regain in the absence of a calorie-controlled diet and regular exercise.The side effects of tirzepatide (the active ingredient in Mounjaro) are comparable to those of other popular weight loss injections, like semaglutide (Wegovy). Therefore, people switching from Wegovy to Mounjaro (or vice versa) are unlikely to experience any new symptoms. If you want to switch from one weight loss medication to another, only do so under the guidance of a licensed clinician. {add_product_block(380)} How Long Do the Side Effects of Mounjaro LastThe side effects of Mounjaro are transient, meaning they typically occur at the start of treatment and during dose escalation, then decrease over time. Symptoms may last for days or weeks, but what can you expect in the short, medium, and long term?Mounjaro Short-Term Side EffectsGastrointestinal symptoms like nausea, vomiting, and diarrhoea are most common during the initial weeks of Mounjaro treatment. They begin soon after the first injection, and often flare up again during dose increases. Other short-term side effects of Mounjaro may include:IndigestionConstipationAbdominal painDecreased appetiteThese symptoms are usually mild to moderate and get better within days or weeks of starting treatment. However, severe or persistent vomiting and diarrhoea can lead to dehydration, so consult a healthcare professional if your condition doesn’t improve.Mounjaro Medium-Term Side EffectsMost of Mounjaro’s side effects taper off within days or weeks of starting treatment, and many people will have little or no symptoms in the medium term. However, it’s common for gastrointestinal problems to re-emerge every 4 weeks in coincidence with dose escalations. This is because the side effects of tirzepatide are dose-dependent, and often flare up at higher doses.Fortunately, research has demonstrated how gradual dose escalation can reduce the impact of Mounjaro’s side effects. Slowly increasing your dosage in line with the approved schedule can make gastrointestinal symptoms more tolerable, even at higher doses. Many people who have reached the maintenance (i.e., highest possible) dose of Mounjaro find their symptoms fade completely after a while. {add_product_block(437)} Mounjaro Long-Term Side EffectsThe majority of Mounjaro’s side effects are temporary and primarily affect the gastrointestinal system. However, in rare cases, weight loss injections can lead to more serious long-term health complications. These are thought to affect under 1% of people using Mounjaro, and may include:GallstonesInflammation of the gallbladderPancreatitisSevere hypoglycemiaSerious medical complications are often associated with other risk factors. For example, people who use anti-diabetic medications (like sulfonylureas or insulin) alongside Mounjaro are more likely to develop hypoglycemia. People who use tobacco and those with a history of gallbladder disease or acute pancreatitis are more likely to develop pancreatitis on Mounjaro.If you experience severe or persistent side effects on Mounjaro, seek the advice of a licensed clinician.How to Deal with Mounjaro Side EffectsThe most common side effects of Mounjaro are gastrointestinal symptoms like nausea, vomiting, and diarrhoea. These are usually mild to moderate and short-lived, but can be uncomfortable to live with.
Fortunately, there are measures you can take to manage the side effects of Mounjaro. For example, you may be able to minimise nausea and vomiting by:Eating slowly and only when hungryEating small portionsAvoiding lying down after eatingAvoiding physical activity after eatingNot eating too close to bedtimeOptimising your diet for Mounjaro treatment may also help to counteract gastrointestinal symptoms. Choose easily digestible, low-fat foods and sip water and other clear fluids throughout the day. Foods to avoid on Mounjaro include:Spicy foodsSugary foodsFoods high in fatDressingsCanned foods  Diarrhoea is another common side effect of Mounjaro, and may be alleviated by:Temporarily avoiding high-fibre foods (like grains, nuts, seeds, pulses, vegetables and fruits with the skin on)Increasing hydration with water and other clear drinksAvoiding dairy products, coffee, and alcoholIf your side effects are severe, persistent, or uncomfortable despite taking measures to improve them at home, contact a healthcare professional for guidance. Clinicians may recommend over-the-counter remedies or advise those with troublesome side effects to take a lower dose of Mounjaro.Frequently Asked QuestionsThe decision to use weight loss injections requires careful consideration, and you may still have questions about their potential side effects. Common topics of discussion around these medications include other possible side effects, injection site reactions, and when to seek medical advice.Is Fatigue a Side Effect of Mounjaro?Fatigue is not officially listed as a side effect of Mounjaro. Regardless, you may have heard people say they feel unusually tired on weight loss injections, and one clinical study reported that 5% of participants experienced fatigue during tirzepatide treatment.Feeling tired from weight loss injections is likely due to a significantly reduced calorie intake. Fortunately, substantial weight loss is often accompanied by increased energy levels, particularly among individuals who regularly engage in exercise.How Long Do Injection Site Reactions Last?Injection site reactions are a common occurrence among people using weight loss injections. They typically involve redness, pain, itching, swelling, or warmth in the area you have injected Mounjaro.These reactions are thought to be dose-dependent and are more common among people using higher doses of Mounjaro (10 mg or 15 mg). Injection site reactions are usually mild or moderate in severity and may resolve themselves within days. However, people’s experiences vary, and some skin irritation may persist for a few weeks.When Should I Seek Medical Care For Mounjaro Side Effects?Most of the side effects of Mounjaro are mild to moderate and get better with time. Sometimes, however, symptoms can be an early warning sign of a deeper medical problem and should be addressed by a healthcare professional.You should contact a licensed clinician if your side effects are severe or if they don’t get better within a few days. This is also true for gastrointestinal symptoms, as persistent vomiting and diarrhoea can lead to dehydration and other health complications.  Effective Weight Loss Support You Can Rely UponIf you’re considering adding Mounjaro or another treatment to your weight loss regimen, you’ll likely want as much information as possible about how it works and its potential impact on your body. This is where Prescription Doctor can help.From answering questions such as “How long do Mounjaro side effects last?” to comparing weight loss injections, we’re here to support you every step of the way. Our clinicians will work with you to recommend the most suitable medication for your specific circumstances and will check in periodically to assess your progress. A holistic service designed with you in mind.We also provide a comprehensive reference library of information about Mounjaro. This includes guides on how to use the pens, where to inject them, suggested exercise routines, and diet advice. You can also read reviews from real Mounjaro customers and view some impressive before-and-after results, providing a good idea of what you can expect from the treatment.All orders with Prescription Doctor are dispatched in plain packaging for total privacy. Requests approved before 3pm on a weekday are also eligible for next-day delivery, so you can have prompt access to your medication. This is just part of our commitment to take all the hassle out of healthcare.Ready to take your first steps with Mounjaro? Request a consultation today. SourcesPubMed (2024): The Body Weight Reducing Effects of Tirzepatide in People with and without Type 2 Diabetes: A Review on Efficacy and Adverse Effects. European Medical Journal (2025): Weighing up the Risks: GI Side Effects of Semaglutide vs Tirzepatide. FDA: Mounjaro Highlights of Prescribing Information. DailyMed: Mounjaro. UK Government (2024): GLP-1 receptor agonists: reminder of the potential side effects and to be aware of the potential for misuse. PubMed (2023): Tirzepatide-Induced Gastrointestinal Manifestations: A Systematic Review and Meta-Analysis. PubMed (2024): Efficacy and safety of once-weekly tirzepatide for weight management compared to placebo: An updated systematic review and meta-analysis including the latest SURMOUNT-2 trial.  PubMed (2023): Adverse Events Related to Tirzepatide. PubMed (2022): Weight regain and cardiometabolic effects after withdrawal of semaglutide: The STEP 1 trial extension. PubMed (2025): Tirzepatide Versus Semaglutide for Weight Loss in Overweight and Obese Adults: A Systematic Review and Meta-Analysis of Direct Comparative Studies. PubMed (2020): Efficacy and tolerability of tirzepatide, a dual glucose‐dependent insulinotropic peptide and glucagon‐like peptide‐1 receptor agonist in patients with type 2 diabetes: A 12‐week, randomized, double‐blind, placebo‐controlled study to evaluate different dose‐escalation regimens. NIH (2024): Tirzepatide. Science Direct (2025): Predictors of acute pancreatitis in patients treated with GLP-1 receptor agonists for weight management.PubMed (2022): Clinical Recommendations to Manage Gastrointestinal Adverse Events in Patients Treated with GLP-1 Receptor Agonists: A Multidisciplinary Expert Consensus. Taylor & Francis Online (2021): Managing the gastrointestinal side effects of GLP-1 receptor agonists in obesity: recommendations for clinical practice. PubMed (2025): Patient Experience of Treatment with Tirzepatide for Weight Management: Exit Interviews from SURMOUNT-4. PubMed (2021): Injection-Site Nodules Associated With Once-Weekly Subcutaneous Administration of Semaglutide. PubMed (2023): A systematic review of the safety of tirzepatide-a new dual GLP1 and GIP agonist - is its safety profile acceptable?

When it comes to weight loss solutions, two medications often come up in conversation: Ozempic and Mounjaro. Both have received considerable attention for their potential to help people shed pounds, so how do you determine which one to choose?In this article, we delve into the ins and outs of Mounjaro vs Ozempic, exploring the similarities, differences, side effects, costs, and, most importantly, which one is the right option for weight loss.Ready to make an informed decision on your weight loss journey? Keep reading to discover everything you need to know about Mounjaro and Ozempic.  [medical_form product_id="437" text="START YOUR MOUNJARO CONSULTATION TODAY" type="button"] What are Ozempic and Mounjaro?Ozempic and Mounjaro are both weekly injectable pens that belong to a group of medications called glucagon-like peptide-1 receptor agonists, which means they bind to GLP-1 receptors and mimic their actions. By doing so, Mounjaro and Ozempic regulate blood sugar levels, reduce your appetite, and slow the transit of food through your stomach. These effects are linked to weight loss.Mounjaro also binds to gastric inhibitory peptide (GIP) receptors, making it a dual agonist, which enhances its effectiveness for both weight management and type 2 diabetes. While both drugs regulate blood glucose levels and appetite, they differ in their active ingredients, composition, dose, and intended purposes. What is the Difference Between Ozempic and Mounjaro?When comparing Mounjaro and Ozempic, it is essential to gain a well-rounded understanding, including the differences between the two medications. In doing so, you’ll select the right one for you and benefit from its effectiveness. Let’s explore some of the key differences between these two self-injectable pens.  Active IngredientsA key difference between the two is their active ingredients. Ozempic contains semaglutide, the same active ingredient as Wegovy, which works by mimicking the actions of the hormone GLP-1 to regulate your blood sugar levels by stimulating insulin production, suppressing your appetite, and increasing the feeling of fullness.Mounjaro, on the other hand, contains a dual agonist called tirzepatide, which acts on both the GLP-1 and GIP receptors, offering more substantial appetite suppression effects than semaglutide.LicensingMounjaro is licensed both as a treatment option for type 2 diabetes and weight management, making it a versatile choice for people looking for assistance when losing weight and for those struggling with both obesity and diabetes. Ozempic, while effective for weight loss, is only officially licensed for the management of diabetes. Although it used to be prescribed off-label for people seeking to lose weight, this practice has largely stopped. Instead, we recommend Wegovy as a more suitable option for a semaglutide-containing weight loss injection. ManufacturerThe manufacturers of Mounjaro and Ozempic are different. Eli Lilly, a US company, manufactures Mounjaro, and Novo Nordisk, a Danish company, produces Ozempic.  {add_product_block(437)} Dosage ScheduleBecause Ozempic and Mounjaro contain different active ingredients, their dosage schedules differ even though they are both injected once weekly.The Ozempic schedule begins with the lowest dose of 0.25 mg per week for four weeks, then gradually increases until you reach the maximum strength of 2 mg, as shown below:  Mounjaro, on the other hand, starts at a low 2.5 mg dose and increases every four weeks, usually over 21 weeks, until you reach the maximum maintenance dose – the most potent amount for weight loss – of 15 mg.   Mounjaro and Ozempic SimilaritiesWhile Mounjaro and Ozempic have their differences, they also share several key similarities that contribute to their effectiveness for weight loss and blood sugar control. For example, both are self-injected, belong to the same drug class, and share a similar side effect profile. Ozempic and Mounjaro share the following likenesses:Both are available for type 2 diabetes: Mounjaro and Ozempic are available to manage very high blood sugar levels, but only Mounjaro is licensed for weight loss. Route of administration: Both Mounjaro and Ozempic are administered subcutaneously, meaning they are injected into the layer of tissue just below the skin. They are also available in pre-filled, multi-dose pens, so there’s no complicated drawing-up method; simply select your dose and inject.Injection site: You can inject Mounjaro or Ozempic into three main sites in the body:Abdomen: So long as it is at least 2 inches away from your belly button.Thigh: Either thigh can be used, and dividing each into two means you can rotate the injection site each week.Upper arm: This is a generally good location for someone to assist with your injection, as it is easily accessible.Steady titration: Although they contain different active ingredients and follow a specific dosing schedule, each injection is slowly titrated to allow your body to become accustomed to its respective active ingredient, thereby reducing the likelihood of side effects.Requires a prescription: Neither Mounjaro nor Ozempic is available over the counter for weight loss or diabetes; therefore, you will need to consult with your doctor or a clinician from an online pharmacy, such as Prescription Doctor, to obtain a prescription. This ensures that you are eligible for the medicine and that it is safe and suitable for you to use. Ozempic vs Mounjaro Side EffectsAll medications can cause side effects, and Ozempic and Mounjaro are no exception. Because of the way they work, both semaglutide and tirzepatide can cause similar adverse events. The following are the most common:Feeling or being sickConstipationDiarrhoeaStomach pain or discomfortWeakness or tirednessHeadachesFor many people, these side effects are usually mild and improve as your body adjusts to the injection. Some people find that they return to their original dose after increasing it, only to settle down again. If you are concerned about any side effects from Mounjaro or Ozempic, please contact your clinician for further advice. Mounjaro vs Ozempic Dose ConversionThe dosage schedules for Mounjaro vs Ozempic are similar in that each dose is taken for four weeks before being increased if it has been well tolerated. However, because each injection contains a different active ingredient, the amount required to be effective is different.Ozempic starts at 0.25 mg, before doubling every four weeks until you reach the most potent strength of 2 mg per week. All being well, this is the amount you will stick to for effective diabetes management.Mounjaro starts with a 2.5 mg weekly dose, and increases by 2.5 mg every four weeks until you reach 15 mg or a lower, well-tolerated and effective strength for you.Ozempic to Mounjaro Dose Conversion ChartThe dosage schedules for Mounjaro and Ozempic vary slightly, and it is essential to understand this difference, especially if you are considering switching weight loss medications. Here is a quick reference guide to help you navigate these conversions:  MonthMounjaro (mg/week)Ozempic (mg/week)12.50.25250.537.514102512.5N/A615N/A Mounjaro vs Ozempic Cost ComparisonCost can be a contributing factor when deciding which injection is best for weight loss. Since Mounjaro is the only medication of the two approved for weight loss purposes, we will compare the prices of Mounjaro and Wegovy instead.At Prescription Doctor, we believe finding the right medication to lose weight needn’t be stressful. So, here is a side-by-side comparison of what you can expect to pay for Mounjaro or Wegovy when you choose to purchase from us: DoseMounjaroWegovyStarting dose£169.99£109.99Dose 2 £199.99£119.99Dose 3£249.99£139.99Dose 4£279.99£164.99Dose 5£289.99£184.99Maximum maintenance dose£298.99£249.99
The cost of Moujaro and Wegovy varies. Although the starting dose of Wegovy is slightly lower, Mounjaro's maximum strength is more affordable. If cost is a factor when deciding which treatment is best for you, understanding the price differences before committing to treatment can help you make an informed decision that suits your situation and budget. Ozempic vs Mounjaro for Weight Loss: Which is Best?Although both semaglutide and tirzepatide can produce impressive weight loss results, Mounjaro is the most effective, primarily due to its dual-action mechanism. One study has demonstrated that at 15 mg per week over  72 weeks, Mounjaro resulted in an average weight reduction of 21%, with at least 91% of people losing at least 5% of their initial body weight. Lower doses also yielded significant results, with 85% and 89% achieving at least a 5% loss at the 5mg and 20mg doses, respectively.While Ozempic is not approved for weight loss, its active ingredient, semaglutide, is approved under the brand name Wegovy for this purpose. Clinical trials have demonstrated that Wegovy, at its 2.4 mg strength, can result in an average weight loss of 15% over a 68-week period. However, people prescribed Ozempic for type 2 diabetes have also reported up to a 7kg weight loss with 2mg per week.When it comes to Ozempic vs Mounjaro for weight loss, Mounjaro is the winner, not least because it is the only one of the two that is specifically recommended to help you lose weight. Yet, even when compared to Wegovy, Mounjaro comes out on top with clinical trials showing that tirzepatide is more likely to help people achieve substantial weight loss compared to semaglutide.   {add_product_block(437)} Are Alternative Products Available? If Mounjaro doesn’t feel like the right option for you, and you don't want to try Wegovy, there are other weight loss treatments available. These are available either as injectable pens or in tablet form. At Prescription Doctor, we stock the following treatments as alternatives to Mounjaro and Wegovy:Nevolat is a generic version of liraglutide, formerly known as Saxenda, and is a more affordable alternative to branded treatments. It can result in an average weight loss of 8% at its maximum dose. However, one key difference is that it is administered daily rather than weekly. Xenical blocks the absorption of fat, allowing it to be excreted from the body as waste. It is also available in its generic form, Orlistat. Mysimba acts on the reward centres of the brain to suppress your appetite. Alli is an over-the-counter version of orlistat. It works in the same way as Xenical and can block up to 25% of the fat you eat daily.Mounjaro vs Ozempic FAQsWith so much information to consider, it’s natural to have questions about Mounjaro vs Ozempic for weight loss. Here, we’ve addressed some of the most frequently asked questions to help clear up any confusion and provide you with all the details you need to make an informed choice.Can I Switch from Ozempic to Mounjaro?Yes, switching from Ozempic to Mounjaro for weight loss is possible, but it should be done under the guidance of a healthcare professional. You will need to start with Mounjaro’s lowest dose, even if you have reached the maximum Ozempic strength and have tolerated it well.That’s because they have different active ingredients, and you will need to give your body time to adjust to them. You’ll also need to wait at least 5 weeks after your last Ozempic injection before starting Mounjaro, to allow semaglutide to leave your system entirely. If you are considering switching, our clinicians are available to provide you with all the support you need during your transition to a new medication.Can I Take Mounjaro and Ozempic Together?No, because Mounjaro and Ozempic have a similar mechanism of action, you must not take them together. They both bind to GLP-1 receptors, so taking them at the same time is likely to result in side effects, such as nausea, vomiting, and diarrhoea.Specialist Weight Loss Solutions from Prescription DoctorWhen it comes to choosing the right weight loss solution, ordering from a trusted provider like Prescription Doctor ensures you receive all of the guidance and care you need for successful treatment. Whether you’re considering Mounjaro vs Ozempic for weight loss, we offer a safe and convenient way to access weight loss medication with professional support throughout, including a 7-day diet plan.When you order from us, you can be assured that our clinicians have carefully assessed your suitability. We also offer next-day delivery, with discreet packaging, so you can start your journey the next day from the comfort of your own home, ensuring the process is as hassle-free as possible.Order Mounjaro today and take your first step towards a healthier, more confident you. Sourcesemc, (2025). Nevolat 6 mg/ml solution for injection in pre-filled pen.emc, (2024). Ozempic 0.5 mg solution for injection in pre-filled pen.emc, (2023). alli 60 mg hard capsules.JAMA, (2024). Semaglutide vs Tirzepatide for Weight Loss in Adults With Overweight or Obesity.Nature, (2024). What is the pipeline for future medications for obesity?NEJM, (2022). Tirzepatide Once Weekly for the Treatment of Obesity.NEJM, (2021). Once-Weekly Semaglutide in Adults with Overweight or Obesity.PubMed, (2023). Weight loss efficiency and safety of tirzepatide: A Systematic review.

When it comes to weight loss, Mounjaro is one of the most popular and effective treatments available. In clinical trials, its active ingredient, tirzepatide, can help people shed up to 22.5% of their starting body weight. However, for many people considering embarking on their Mounjaro journey, understanding how the weight loss injection can help them within the first month and beyond is equally important as the end result.So, if you’re wondering, “How much weight can you lose in a month with Mounjaro?”, look no further than this dedicated guide. We’ll delve into what your first four weeks on the medication could look like, how the treatment works, and answer some of the most frequently asked questions to help you make a more informed decision about whether Mounjaro is right for you. [medical_form product_id="437" text="START YOUR MOUNJARO CONSULTATION TODAY" type="button"]Is Mounjaro Effective for Weight Loss?Unlike most weight loss injections, Mounjaro works by mimicking two digestive hormones within the body, known as gastric inhibitory polypeptide (GIP) and glucagon-like peptide-1 (GLP-1). Meanwhile, treatments like Wegovy and Nevolat only focus on GLP-1. It’s this dual action of Mounjaro that makes it the most effective medication of its kind to date.Clinical trials have supported this finding, with one reporting that 42% of Mounjaro users achieved at least a 15% weight reduction after one year, compared to 18% of Wegovy users. Meanwhile, another study compared the impact of tirzepatide (Mounjaro), semaglutide (Wegovy), and liraglutide (Nevolat), with the average weight loss for each treatment being:5% for liraglutide12% for semaglutide18% for tirzepatideWhile clinical data is all well and good, if you’re thinking about taking Mounjaro, you’ll likely want to see some real-world examples of how effective the medication can be. Well, look no further than these impressive before-and-after stories, or genuine reviews from our customers. We’re sure that all of this combined will show you just how effective Mounjaro can be.    Mounjaro: How it Works for Weight LossMounjaro’s active ingredient, tirzepatide, supports weight loss by binding to the body’s GLP-1 and GIP receptors. In doing so, it helps to:Suppress your appetiteReduce food cravingsSlow down stomach emptyingRegulate blood sugar levelsMounjaro is most effective when it is paired with a diet plan and exercise programme. Although Mounjaro reduces appetite and regulates how your body processes food, incorporating a balanced diet alongside physical activity maximises Mounjaro’s weight loss potential and boosts your overall wellbeing.  So, now that we’ve covered how effective the treatment is and how it works, what could your first few weeks on the medication look like? Just how much weight can you lose in a month with Mounjaro? Let’s take a look. How Much Weight Can You Lose in a Month with Mounjaro?Mounjaro gets to work after your first injection, with some people noticing changes in appetite within a few days. Weight loss at this early stage will usually be minimal, though you could start to see subtle changes within the first month. To give yourself the best chances of success at this time, it’s important that you make lasting lifestyle changes and stick to the dosage schedule as closely as possible.It’s important to remember, however, that everyone’s journey is unique. If you’re feeling that it’s taking you longer to spot the stages of weight loss or are concerned that the medication may not be working for you, it’s important not to worry. Focus instead on the little things, such as increased energy levels, your clothes becoming baggier, or enhanced motivation. All of these can serve as useful tools to keep you on track.With this in mind, let’s take a look at what one month on Mounjaro might look like and how much weight you could lose.  {add_product_block(437)}Mounjaro First Week Weight LossMounjaro is intended to be a long-term solution rather than a miracle cure, so it’s unlikely that you’ll notice any significant weight changes in this first week. That being said, studies have shown you could lose around 1% of your body weight each week during the first month. This is not guaranteed and will vary from person to person.  Instead of focusing on weight loss during the first week, it’s a good idea to establish the foundations of your treatment routine. Mounjaro is most effective when taken on the same day and at the same time, so it’s important to create a schedule you can stick to. If you’re wondering about the best time to take Mounjaro, our dedicated guide can help.Your first dose is also a good opportunity to monitor how your body responds to tirzepatide and note any side effects you experience, such as nausea, diarrhoea, or constipation. These factors may influence your decision on when to take Mounjaro moving forward. Some people, for example, prefer taking it first thing in the morning to monitor the effects, while others opt for the evening to sleep through them.During this week, you may also start to make some changes to your lifestyle, including your diet and activity levels. If you’re wondering what you should eat on Mounjaro and the types of food to avoid, we’re here to help. Second Week on Mounjaro: What to ExpectAfter your second shot of 2.5 mg – Mounjaro’s lowest dose – it’s crucial to continue monitoring any side effects you might be experiencing. Most mild effects will improve as your body gets used to tirzepatide and can be managed at home in the following ways:Feeling or being sick or having diarrhoea: Eat smaller, more frequent meals, try eating plain foods like rice or toast, and avoid greasy, fatty, and spicy meals. Drink plenty of water to keep yourself hydrated.Headaches: Drink plenty of water and consider taking over-the-counter painkillers, such as paracetamol and ibuprofen.Constipation: Increase the amount of fibre in your diet and drink plenty of water to help bulk up your stools. Speak to your clinician or pharmacist about over-the-counter constipation remedies.Injection site reactions: Rotate your injection site each week to limit irritation. Use our detailed guides to learn how to use Mounjaro and where to administer it.  Weight loss during week 2 is still unlikely to be significant. Remember, you’re only expected to have dropped around 2% of your body weight at this point, if that. You may instead notice that your appetite is reducing, you’re experiencing fewer cravings, and you are starting to feel fuller for longer,  so draw upon these positives as you move into week 3. Mounjaro Third Week ResultsYour third week on Mounjaro could yield a 3% total drop from your starting body weight. However, the real results lie with the impact the treatment has on your body now that medication levels are stabilising. Side effects should have subsided, and you’re likely to find it easier to follow your diet and exercise regimen.Even if you’re not feeling hungry, it's important to continue eating and maintaining your calorie deficit so you don’t risk nutritional deficiencies. You may also want to consider adding vitamins and supplements to your routine. Average Weight Loss on Mounjaro: First Month ResultsBy week 4 of Mounjaro, it’s possible that you could have lost an average of 4% of your starting body weight. However, your actual result will depend on several factors, such as how well you’re following your diet and exercise plan and whether the medication is suitable for you.At this point, you should also have a good idea of how well your body is tolerating Mounjaro and whether you’re ready to move up to the next dose. If you have any concerns or queries, it’s a good idea to speak to your clinician before increasing your dosage.   What are the Long-Term Effects of Mounjaro?Mounjaro isn’t a quick-fix solution and is intended for long-term use to help you initiate and then maintain weight loss. Clinical trials have investigated the effects of Mounjaro over 2 years and found that weight loss plateaued after around one year but was maintained for 18 months to 2 years. It also found that tirzepatide is both well-tolerated and has a safety profile that is similar to other GLP-1 receptor agonists, such as Wegovy and Nevolat.Although in the first 4 weeks, weight loss may not be so noticeable, Mounjaro weight loss after 3 months should be more significant, with some studies reporting an average 8% weight reduction on the 5, 10, or 15mg dose. Don’t worry if you’ve lost more or less at this point; these are just averages, and your weight loss journey will be unique to you. However, in most cases, if you haven’t achieved at least a 5% weight reduction in 12 weeks, your clinician may tell you to stop taking Mounjaro and recommend an alternative weight loss treatment. That’s because it’s unlikely to be beneficial for you if you haven’t seen any progress so far.Mounjaro weight loss will take time, and it is important to be patient with yourself and the medication. Our week-by-week weight loss guide can help you track what to expect as you begin your journey, adjust your doses, and determine if you’re on target to meet your weight loss goals. What Can Impact Weight Loss on Mounjaro?Mounjaro is just one piece of the puzzle when it comes to losing weight; you’ll need to pair it with a healthy lifestyle to achieve its full benefits. However, if you are not losing as much weight as you would like on Mounjaro, then there could be several reasons for this, including:You need more time: Patience is key, especially when you first start a new treatment. It can take up to 12 weeks to lose 5% of your starting body weight, so it is important to give Mounjaro sufficient time to show results.You haven’t reached the maintenance dose yet: If you follow the Mounjaro dosage guide correctly, it can take 21 weeks to reach the maximum 15 mg dose. This is the strength that is associated with the greatest average weight loss. You’re not in a calorie deficit: A key factor for losing weight is maintaining a calorie deficit. That is, eating fewer calories than you burn.Other medications could be hindering weight loss: Having other health conditions or taking other medications can impact your ability to lose weight. You need to exercise more: The more you move, the more energy you will burn, and the more likely you will be in a calorie deficit.  Frequently Asked QuestionsWhether you’re just starting out on Mounjaro or you’re weighing up your options, perhaps even deciding which is better, Mounjaro vs Wegovy, you’re bound to have some unanswered questions. Here we address some of the most frequently asked questions about Mounjaro to help you make the right decision for you. How to Get Mounjaro Privately?Although Mounjaro is now available on the NHS, the wait times are long, and those who are most in need will be prioritised. To relieve some of this burden, Mounjaro can be obtained on a private prescription via online pharmacies, like Prescription Doctor, and private clinics.When buying Mounjaro privately, there are a few things you should consider, including choosing a reputable and trusted company, avoiding counterfeit medications, and ensuring your data is protected at all times. You can find out more in our expert guide: How to Buy Mounjaro Online: 6 Top Tips.   {add_product_block(437)}Mounjaro: How to Use the Pen? Mounjaro is a self-injectable weight loss medication that is provided in a KwikPen device. Each pen contains 4 doses, so it will last for 4 weeks. You will need to attach a new needle each time you use the pen, but it has been designed to be easy to use and inject yourself without any help.Mounjaro can be injected in your stomach, upper thigh, or upper arm, and you should rotate the injection site each time you take it to lower the chance of irritation. Check out our ‘how to inject Mounjaro safely’ guide for more detailed instructions.How to Get the Most Out of Mounjaro? You can enhance the effectiveness of Mounjaro by applying some simple tips and tricks to your everyday routine. These include:Following the dosage schedule exactly (where possible)Reducing your calorie intake and increasing your calorie burn (exercise)Limiting your exposure to stressGetting a good, restful night’s sleepListening to your bodyMounjaro works best alongside a healthy lifestyle, and the changes you make can help you maintain your weight loss after your treatment ends.How Long Does it Take for Mounjaro Side Effects to Start?Most people notice that their Mounjaro side effects start soon after their first injection or when they increase their dose every 4 weeks. However, they usually get better on their own as your body adjusts to the medication, but how long they last will depend on your body.If you get any side effects that concern you or you find it difficult to manage, speak to your clinician, who can advise you on what you should do. They may even recommend an alternative weight loss injection or pill if they think you will tolerate it better.How to Store Mounjaro Once OpenedAfter you have used your Mounjaro KwikPen for the first time, you can either store it in the fridge at (2°C to 8°C) or at room temperature, as long as it does not go above 30°C for up to 30 days. However, this may differ if you decide to travel with Mounjaro.It’s also important that you store your pens out of reach of pets and children, and that you keep them away from direct heat and sunlight, as this may impact their effectiveness.  Mounjaro + Prescription Doctor = Weight Loss SuccessAs well as diet and exercise changes, there’s also another crucial factor you need to consider when starting your Mounjaro journey, and that’s your weight loss partner. At Prescription Doctor, we’ve been committed to helping people just like you positively transform their lives in a safe and effective manner since 2013.Our clinicians are experts in their field and are qualified to assess our patients on a case-by-case basis to ensure the medication they choose is safe and suitable for them to take. But our support doesn't stop there. With regular check-ins and access to a library of informative content, including meal plans, what to expect week by week, and guidance on addressing side effects, you can be confident that you’re in safe hands.We understand that deciding to use weight loss injections is a significant step, which is why we want to provide you with as clear an understanding of what to expect as possible. From answering questions such as ‘How much weight can you lose in a month with Mounjaro?’ to discussing potential weight loss results after three months or even over an extended period, we’re committed to helping you make an informed decision about your medication.Start your Mounjaro weight loss consultation today and take a step closer to a new you. SourcesEMC (2025): Mounjaro KwikPen 2.5mg solution for injection in pre-filled pen.JAMA (2024): Semaglutide vs Tirzepatide for Weight Loss in Adults With Overweight or Obesity.NEJM (2022): Tirzepatide Once Weekly for the Treatment of Obesity.PubMed (2024): Glucagon-like Receptor-1 agonists for obesity: Weight loss outcomes, tolerability, side effects, and risks. 

A medicated weight loss plan proven to help you lose weight7-Day Meal Plan for Effective Weight LossPersonalised Weight Loss ProgramsHighly Rated On TrustpilotTrustpilotTable of contentsTailored for weight loss GLP-1 usersDaily caloric intake recommendationYour 7-day meal plan with shopping guideYour shopping list with ASDA pricesExplanation of key terms7-Day Diet Plan for Weight LossTAILORED FOR WEIGHT LOSS GLP-1 USERSWegovy (semaglutide)Action: GLP-1 agonist reduces appetite and increases satiety.Use: For chronic weight management in obesity and related conditions.Dose: Weekly injection.Side Effects: Nausea, vomiting, diarrhoea, and constipation. Not an exhaustive list.Results: Average weight loss up to 15%.Mounjaro (tirzepatide)Action: Dual GLP-1 and GIP agonist improves appetite control.Use: Approved for type 2 diabetes; effective for weight lossDose: Weekly injection.Side Effects: Nausea, diarrhoea, decreased appetite. Not an exhaustive list.Results: Weight loss up to 22.5%DAILY CALORIC INTAKE RECOMMENDATIONYour Daily Calorie Guide1,200–1,500 kcal/day1,500–1,800 kcal/dayOur meal plan ranges from approximately 1,200 to 1,400 kcal per day.YOUR 7-DAY MEAL PLAN WITH SHOPPING GUIDE[shortcode link="https://www.prescriptiondoctor.com/ad/downloads/PD-diet%20plan-lead-mag.pdf" text=" ⇓ Download Meal Plan" type="button"]Day 1Total Calories: 1300Breakfast (305 kcal)Berry Yoghurt Parfait¾ cup plain low-fat Greek yoghurt¼ cup oats½ cup blueberriesAM Snack (190 kcal)1 medium apple1 tbsp peanut butterLunch (385 kcal)Chicken Quinoa Salad½ cup cooked quinoa3 oz cooked chicken breast¼ cup cherry tomatoes, halved1 tbsp olive oil1 tbsp lemon juicePM Snack (115 kcal)1 cup baby carrots2 tbsp hummusDinner (385 kcal)Tomato Soup, Toasted Bread, & Side Salad1 cup low-sodium tomato soup1 slice whole wheat toast1 tbsp carrots½ tbsp vinaigretteDay 2Total Calories: 1287Breakfast (295 kcal)Spinach Scrambled Eggs with Toast2 eggs, scrambled1 cup spinach, sautéed1 slice whole wheat toastAM Snack (145 kcal)1 oz cheddar cheese1 clementineLunch (385 kcal)Turkey and Avocado Wrap1 whole wheat tortilla3 oz sliced turkey breast¼ avocado, sliced1 tbsp mustardPM Snack (205 kcal)1 cup celery sticks2 tbsp peanut butterDinner (322 kcal)Roasted Chicken with Sweet Potatoes andGreen Beans1 tsp olive oil4 oz skinless chicken breast1 cup sweet potatoes1 cup green beans1 tsp Italian seasoningDay 3Total Calories: 1297Breakfast (357 kcal)Banana Peanut Smoothie1 medium banana1 cup unsweetened almond milk1 tbsp peanut butter1 cup Greek yoghurtAM Snack (115 kcal)1 cup baby carrots2 tbsp hummusLunch (235 kcal)Open-Face Tuna Salad Sandwich1 can of tuna in water, drained1 tbsp plain Greek yoghurt1 tbsp diced celery2 large lettuce leaves1 slice whole wheat toastPM Snack (190 kcal)¼ cup mixed nutsDinner (400 kcal)Chicken & Veggie Quesadilla3 oz cooked chicken breast1 small bell pepper, sliced1 cup spinach1 tsp olive oil1 whole wheat tortilla½ oz cheddar cheese, shreddedDay 4Total Calories: 1282Breakfast (260 kcal)Overnight Oats1½ cups rolled oats1 cup unsweetenedalmond milk¼ cup Greek yoghurt½ cup blueberriesAM Snack (290 kcal)¼ cup mixed nuts1 small bananaLunch (280 kcal)Chicken Avocado Salad3 oz grilled chicken breast¼ avocado, sliced1 cup romaine lettuce½ cup cherry tomatoes, halved½ tbsp vinaigrettePM Snack (112 kcal)1 hard-boiled egg1 clementineDinner (340 kcal)Baked Salmon with Steamed Broccoli and Brown Rice1 tsp olive oil4 oz salmon, baked with a squeeze of lemon1 cup steamed broccoli½ cup cooked brown rice1 whole wheat tortilla½ oz cheddar cheese, shreddedDay 5Total Calories: 1,327Breakfast (222 kcal)Strawberry Chia Oatmeal½ cup oatmeal, cooked½ cup strawberries, sliced2 tbs chia seedsAM Snack (115 kcal)¾ cup plain non-fat Greek yoghurt1 tsp honeyLunch (285 kcal)Turkey Spinach Wrap1 whole wheat tortilla4 oz sliced turkey breast1 cup fresh spinach½ cup cherry tomatoes, halved1 tbsp hummusPM Snack (220 kcal)1 oz cheddar cheese1 cup grapesDinner (485 kcal)Grilled Shrimp with Quinoa and Asparagus5 oz grilled shrimp1 cup cooked quinoa1 cup steamed asparagusDay 6Total Calories: 1,305Breakfast (235 kcal)Egg and Avocado on Toast1 egg, cooked as desired⅓ medium avocado1 slice whole wheat toastAM Snack (240 kcal)1 cup strawberries¼ cup mixed nutsLunch (365 kcal)Black Bean & Quinoa Burrito Bowl½ cup cooked quinoa½ cup canned black beans, rinsed and drained¼ cup diced red bell pepper⅓ avocado, sliced½ oz cheddar cheese, slicedPM Snack (165 kcal)1 small banana15g of chocolateDinner (300 kcal)Chicken & Veggie Stir-Fry3 oz chicken breast, sliced½ cup red bell pepper, sliced1½ cups broccoli florets1 tsp olive oil1 clove garlic, minced1 tbsp soy sauce½ cup cooked brown riceDay 7Total Calories: 1,285Breakfast (220 kcal)Peanut Butter Banana Toast1 slice of whole grain bread1 tbsp peanut butter½ medium banana, slicedAM Snack (125 kcal)1 hard-boiled egg1 cup baby carrotsLunch (395 kcal)Tuna and Rice Bowl1 can of tuna in water, drained½ cup cooked brown rice1 cup sliced cucumbers⅓ avocado, sliced1 tbsp soy saucePM Snack (115 kcal)1 cup celery sticks¼ cup hummusDinner (430 kcal)Lemon Herb Salmon with Broccoli & Potatoes4 oz salmon fillet1 cup broccoli florets1 sweet potato, diced1 tsp olive oil1 tsp lemon juice1 tsp Italian seasoningYOUR SHOPPING LIST WITH ASDA PRICESDELI PRODUCTS:ProductQuantity NeededAsda Price (£)Plain low-fat Greek yoghurt3¾ cups£1.10Plain non-fat Greek yoghurt¾ cup£1.10Cheddar cheese2 oz£0.36Hummus6 tbsp£1.00PRODUCE PRODUCTS:ProductQuantity NeededAsda Price (£)Blueberries1 cup£2.00Strawberries1½ cups£2.50Bananas4 medium£0.60Apples1 medium£0.30Clementines2£0.60Avocado¾ avocado£1.25Grapes1 cup£2.00Spinach4 cups£1.00Cherry tomatoes¾ cup£1.10Romaine lettuce1 cup£0.70Lettuce leaves2 large + ½ cup lettuce£0.70Baby carrots2 cups£1.20Celery sticks2 cups + 1 tbsp diced celery£1.10Red bell pepper1£0.85Green beans1 cup£1.50Broccoli florets3½ cups£1.80Garlic1 clove£0.40Asparagus1 cup£2.00Red onion1-2 slices£0.15GRAINS PRODUCTS:ProductQuantity NeededAsda Price (£)Oats¾ cup plain£1.00Whole wheat bread6 slices£0.60Whole wheat tortilla3£1.00Cooked quinoa2½ cups£1.50Cooked brown rice1½ cups£1.50PROTEIN PRODUCTS:ProductQuantity NeededAsda Price (£)Eggs6£3.00Turkey breast7 oz£3.50Chicken breast15 oz cooked£2.00Canned tuna2 cans£1.50Skinless chicken breast4 oz raw£2.00Shrimp5 oz£4.00Salmon8 oz raw£1.50PANTRY PRODUCTS:ProductQuantity NeededAsda Price (£)Peanut butter4 tbsp£2.00Mixed nuts¾ cup£0.70Olive oil7 tsp£0.50Mustard1 tbsp£0.30Lemon juice2 tsp£0.40Vinaigrette1 + ½ tbsp£0.50 ProductQuantity NeededAsda Price (£)Italian seasoning2 tsp£0.40Honey1 tsp£0.30Soy sauce2 tbsp£1.50Chocolate15g£1.00Unsweetened almond milk3 cups£1.20EXPLANATION OF KEY TERMSNutrition GlossaryGLP-1 (Glucagon-Like Peptide-1):A hormone that helps regulate blood sugar levels and reduce appetite, commonly used in type 2 diabetes and weight management.Calories (kcal):A unit of energy provided by food and beverages, essential for maintaining bodily functions and supporting physical activity.Protein:A macronutrient critical for building and repairing tissues, supporting immune function, and maintaining muscle mass.Carbohydrates:The body's primary energy source, found in foods like grains, fruits, and vegetables, is essential for brain function and physical activity.Fats:A macronutrient important for energy storage, hormone production, and absorbing fat-soluble vitamins, with healthy sources including avocados, nuts, and olive oil.Micronutrients:Vitamins and minerals are required in small amounts for various bodily functions, including immune support and bone health.Satiety:The feeling of fullness and satisfaction after eating helps control hunger and prevents overeating.Fibre:A type of carbohydrate that aids in digestion, promotes regular bowel movements, and helps control blood sugar levels.Glycemic Index (GI):A scale that ranks carbohydrates based on their effect on blood glucose levels, with lower GI foods causing slower, more stable glucose rises.Portion Control:Managing the amount of food consumed in one sitting helps regulate calorie intake and maintain a balanced diet.Achieve Your Goals with Wegovy and MounjaroGet a free consultation when you sign up at www.prescriptiondoctor.com/weight-lossStart Your Journey!.full-width{width:100vw;left:50%;right:50%;position:relative;padding:30px 0;margin:2em -50vw}.page-custom-pages .trustpilot-widget{margin-bottom:.5em}.blue-bac{background:#3992d0;border-bottom:15px solid #4ac4a0}.no-bor{border:0}.sec1{color:#fff}.blue-bac h3{color:#fff;margin:10px auto;font-size:26px}.blue-bac ul{list-style:none;color:#fff;font-weight:500;padding:0;display:inline-block;text-align:left}.blue-bac li{margin:8px 0;position:relative;padding-left:30px}.blue-bac 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If you’ve been researching medicated weight loss programmes, you've likely heard of Mounjaro. Containing the active ingredient tirzepatide, it has been clinically proven to help you lose weight when taken alongside positive lifestyle changes, such as a healthy diet and increased physical activity. Although it can be highly effective, the treatment involves self-administering an injection under the skin (subcutaneously) every week, something which may be an uncomfortable thought for some people.While weight loss tablets were an alternative, they didn’t offer the same potential results as Mounjaro or other injections, as they typically worked in different ways. This changed in June 2026, when the UK’s first GLP-1 pill for weight management was approved by the Medicines and Healthcare products Regulatory Agency (MHRA). Known as the Wegovy pill, this medication offers a real alternative if you have been put off by the idea of using injections.But how exactly does this tablet compare against tirzepatide (Mounjaro), and which option could be best for you? Join us as we compare the Wegovy pill vs Mounjaro, and cover key topics such as how the treatments work, the dosage schedule, potential results, and much more. Let’s begin.   [medical_form product_id="476" text="START YOUR CONSULTATION TODAY" type="button"] What are the Wegovy Pill and Mounjaro Injections?Both the Wegovy pill and Mounjaro injections are licensed weight loss treatments. The Wegovy pill is a daily oral medication containing semaglutide, while Mounjaro is a weekly injection containing tirzepatide. They are both suitable for adults with obesity or overweight-related health conditions, but they contain different active ingredients and are administered differently.The Wegovy pill is one of the latest weight loss treatments to be approved in the UK, receiving its license from the MHRA in June 2026. The Wegovy tablet contains the same active ingredient as injectable Wegovy, a glucagon-like peptide-1 receptor agonist. However, unlike the injections, the pills are taken orally once daily.Mounjaro, meanwhile, contains the active ingredient tirzepatide, which acts on two receptors, GLP-1 and GIP, so it is known as a dual GIP and GLP-1 receptor agonist. It is administered as a once-weekly injection using a prefilled pen.The treatments are intended to be used long-term alongside a reduced-calorie diet and increased physical activity to support significant weight loss. How Do Wegovy Pills and Mounjaro Work?Both Wegovy pills and Mounjaro help people lose weight by reducing appetite and helping them feel fuller for longer. However, Wegovy works by mimicking one hormone involved in appetite regulation, while Mounjaro targets two hormones, which may contribute to greater weight loss in some people.The Wegovy pill contains semaglutide, which mimics glucagon-like peptide-1 (GLP-1), a hormone naturally released after eating. This helps slow stomach emptying, reduce hunger signals, increase feelings of fullness, and lower calorie intake. Because semaglutide is a large peptide that is usually broken down in the stomach, researchers have had to develop a way to ensure it can travel through the digestive system without being destroyed by your stomach acid and digestive enzymes. The solution is a special coating called salcaprozate sodium, or SNAC for short. SNAC protects the active ingredient in the Wegovy pill from harsh digestive conditions by temporarily altering the stomach environment, allowing semaglutide to pass through the stomach lining and into the bloodstream.  Mounjaro contains tirzepatide, which activates both GLP-1 and glucose-dependent insulinotropic polypeptide (GIP) receptors. By targeting two metabolic pathways, Mounjaro may have a greater effect on appetite regulation and weight loss than GLP-1-only treatments. Because Mounjaro is injected, its active ingredient does not come into contact with the digestive system, so it is absorbed into the bloodstream and transported to the GLP-1 and GIP receptors in the brain. Both medicines also help improve blood sugar control, which can be particularly beneficial for people with type 2 diabetes or insulin resistance.How Do You Take the Treatments?How you take the Wegovy pill and Mounjaro is one of the key differences between the medicines. The Wegovy pill is taken once daily as a tablet, while Mounjaro is administered once weekly as an injection under the skin. The main reasons for choosing one over the other are convenience and personal preference.How To Take The Wegovy PillThere are several strict steps you must follow when taking the Wegovy pill to ensure it is effectively absorbed. When taking the Wegovy pill, you must:Take it on an empty stomach after a recommended 8 hours of fasting. Most people find that first thing in the morning is the easiest and most appropriate time to take it. You should take it around the same time every day.Swallow the pill whole with no more than 120 ml of water; no other drinks. You must also avoid chewing, crushing, or splitting the tablet.After taking the pill, you must wait at least 30 minutes before eating, drinking or taking any other oral medications. If you do not wait this time, the Wegovy pill may not be properly absorbed {add_product_block(476)} How To Take MounjaroMounjaro is a once-weekly injection that should be injected on the same day every week. It can be used at any time of the day, with or without meals. Mounjaro can be injected into your abdomen, thigh or upper arm. Read our guide for more detailed instructions about how to inject Mounjaro.For people who dislike needles, the Wegovy pill may offer a more appealing option. However, some people may find remembering a daily tablet less convenient than a once-weekly injection. {add_product_block(437)} Wegovy Pill vs Mounjaro Injection: Which is More Effective?Current evidence suggests that Mounjaro produces greater average weight loss results than the Wegovy pill. However, both treatments can be highly effective when combined with a healthy lifestyle, and individual results can vary depending on factors such as dosage, adherence, and overall health. For many people, choosing between Mounjaro and the Wegovy pill comes down to preference rather than effectiveness.The latest clinical trial involving oral semaglutide (Wegovy pill) is the OASIS 4 trial, which has shown that the highest available dose of 25 mg per day resulted in an average body weight loss of 16.6% over 64 weeks.Secondary analysis of the OASIS 4 trial revealed that, by week 64, people described as early responders achieved an average weight loss of 21.5%. These were individuals who lost 10% or more of their body weight by week 16.  These results are closer to Mounjaro's effectiveness, with an average weight loss of 22.5% at the maximum maintenance dose of 15 mg per week over 72 weeks. However, further studies have shown that after 88 weeks, the average weight loss with tirzepatide was 26%.That said, effectiveness is only one factor. Some people may achieve better long-term results with a treatment they find easier and more comfortable to use consistently.Wegovy Pill vs Mounjaro Dosage InformationBecause the Wegovy pill and Mounjaro injection contain different active ingredients, they are available in different strengths. However, they both use gradual dose increases to help minimise the risk of side effects and allow your body time to adjust to the medication, but these differ because one is a tablet and the other is a weekly injection.The Wegovy pill starts at a low dose and is gradually titrated every month (30 days) until you reach the maximum maintenance dose, typically within 4 months. The Wegovy pill dosage schedule is:  If you are already familiar with weight loss treatment doses, the maximum Wegovy pill dose may seem high, and there’s a reason for that. Because the Wegovy pill is an oral treatment which is vulnerable to the digestive process, its bioavailability is low. That is how much of the active ingredient is actually absorbed into the bloodstream and available to use. The bioavailability of the Wegovy tablet is only 1-2%.The Mounjaro dosing schedule is similar to the Wegovy pill, as it is gradually titrated over several months, with the dose typically increasing every 4 weeks. The Mounjaro dosage schedule is:  For some people, it may be advisable to remain on a lower dose for longer, especially if they experience side effects. So, whether you are taking the Wegovy pill or Mounjaro, a clinician will determine the most appropriate dose escalation schedule based on your individual response and tolerability. Wegovy Pill vs Mounjaro Injection Side EffectsThe Wegovy pill and Mounjaro share many side effects. For both, the most common adverse effects are gastrointestinal (GI)-related, such as nausea, vomiting, diarrhoea, and constipation. For most people, Wegovy pill or Mounjaro side effects are most prominent when they first begin treatment and at every dose increase, but they are usually mild and improve as your body gets used to the medication.In the OASIS 4 trial, 74% of people reported at least one GI side effect, while in the SURMOUNT-1 trial, gastrointestinal effects were the most commonly reported among people receiving tirzepatide, with up to 82% experiencing at least one Mounjaro side effect. Wegovy Pill vs Mounjaro Side Effects ComparedThe table below compares some of the potential side effects of the Wegovy pill and Mounjaro.FrequencyWegovy PillMounjaroVery common (may affect more than 1 in 10 people)
 Headache
Feeling sick (nausea)
Being sick (vomiting)
Diarrhoea
Constipation
Stomach pain
Feeling weak or tired
Upset stomach or indigestion
Dizziness
Burping 
Gas (flatulence)
Bloating
Inflamed stomach (gastritis)Low blood sugar when Mounjaro is used to treat type 2 diabetes
Feeling sick (nausea)
Diarrhoea
Being sick (vomiting)
Stomach pain
ConstipationCommon (may affect up to 1 in 10 people
 Dizziness
Burping 
Gas (flatulence)
Bloating
Inflamed stomach (gastritis)Low blood sugar when Mounjaro is used in adults with type 2 diabetes with metformin and a sodium-glucose co-transporter 2 inhibitor
Allergic reaction
Dizziness
Low blood pressure
Reduced appetite
Indigestion
Bloating
Burping
Gas (flatulence)
Reflux or heartburn
Hair lossUncommon (may affect up to 1 in 100 people)
 Inflamed pancreas
Kidney or bladder stonesLow blood sugar when Mounjaro is used with metformin in people with type 2 diabetes
Weight loss in type 2 diabetes patients
Injection site pain
Gallbladder infection (cholecystitis)
Taste changes
Changes in skin sensations
Delayed stomach emptyingRare (may affect up to 1 in 1,000 people)
 Severe allergic reactions
Hip fracturesSevere allergic reactions Please note that the above is not an exhaustive list of possible side effects of the Wegovy pill and Mounjaro. More information can be found in the Wegovy tablets Patient Information Leaflet and the Mounjaro Patient Information Leaflet, respectively. One of the key differences between the Wegovy pill and Mounjaro injections, when considering side effects, is that the Wegovy pill does not cause injection site reactions.If you experience any Wegovy pill or Mounjaro side effects that concern you or are difficult to manage, speak with your doctor. They may suggest lowering your dose, remaining on a lower dose longer, or considering an alternative weight loss treatment.Is the Wegovy Pill Cheaper than Mounjaro?Yes, the Wegovy pill is cheaper than Mounjaro and comparable in cost to Wegovy injections. This gives you more control over your weight-loss journey, as you’ll be able to choose the treatment that best fits your lifestyle and schedule.The tablet below outlines the price of oral Wegovy at Prescription Doctor:
 DosagePrice1.5 mg£1154 mg£1209 mg£13525 mg£180 Meanwhile, this table covers the price of Mounjaro injections at Prescription Doctor: DosePrice2.5 mg£169.995 mg£199.997.5 mg£249.9910 mg£279.9912.5 mg£289.9915 mg£298.88 It’s important to note that cost should not be the only factor in determining which medication you choose. Careful consideration of various elements, such as the dosage schedule, side-effect profile, and treatment regimen. If you’re ever unsure about which may be best for you, our clinicians are here to help. Can I Switch from Mounjaro to the Wegovy Pill?Yes, it is possible to switch from Mounjaro to the Wegovy pill, as long as the switch is made under a clinician's guidance. You must not switch on your own. Because Mounjaro and Wegovy contain different active ingredients and work in slightly different ways to support weight loss, there is no direct dose conversion.The table below gives you an idea of what your starting dose of the Wegovy pill could be with Prescription Doctor. Please note that our clinicians will review each individual's circumstances on a case-by-case basis, so your actual starting dose of Wegovy pills may be different.  Current Mounjaro DoseStarting Wegovy Pill Dose2.5 mg4 mg5 mg4 mg7.5 mg9 mg10 mg9 mg12.5mg9 mg15 mg25 mg When you switch from Mounjaro to the Wegovy pill, there will be a 7-day washout period. This means that you must wait 7 days between your final Mounjaro dose and your first Wegovy pill to avoid overlapping side effects.If you are thinking about switching from Mounjaro to the Wegovy pill, our clinician can help. You’ll need to have a short online consultation that includes a medical questionnaire so our clinicians can ensure switching is possible for you and that the Wegovy pill is a safe treatment for you. {add_product_block(476)} Where Can I Buy the Treatments?Both Mounjaro and the Wegovy pill can be purchased via a private prescription from a reputable pharmacy like Prescription Doctor. A consultation is required to determine whether the treatments are suitable for your circumstances. Mounjaro is also available on the NHS; however, this approach is subject to much stricter criteria and may involve a long waiting list. Wegovy Tablets vs Mounjaro: Which is Best?Because everyone’s weight loss journey is different, exactly which of the two treatments will benefit you most depends on your personal circumstances. You may not like the idea of injecting yourself and would feel more comfortable taking a tablet. On the other hand, the fasting requirements for the Wegovy pill may not fit around your schedule. It is entirely up to you and what you feel you can work with.Other variables include how your body interacts with the medication and whether you can tolerate the potential side effects. You may even be taking other treatments that could interact with Mounjaro or the Wegovy pill. Potential results could even be a factor, with tirzepatide offering a slightly higher average weight loss than Wegovy tablets. A lot of thought is required to determine which option you should choose.If you’re ever unsure, it’s recommended to speak to an experienced clinician who can help you consider what you want from your weight loss programme and your preferences. This will enable you to make a more informed and well-rounded decision. With You For The Journey Starting a medicated weight loss programme is an important decision. It takes hard work and dedication to achieve success, as you will need to commit to making more positive lifestyle choices. The good news is that you won’t have to go through it alone, as Prescription Doctor is here to help.Since 2013, we have cultivated a strong reputation for the quality of our service and support. We have helped countless individuals just like you to achieve their goals, thanks to an approach that places your requirements at the forefront of everything we do.Our process begins with a brief online questionnaire to understand your medical history and any other treatments you may be taking. This is then reviewed by our experienced clinicians to determine whether your chosen medication is suitable for your circumstances or if an alternative may be better. Approved orders are then dispatched by our General Pharmaceutical Council-registered pharmacy in plain packaging to your chosen UK address.The service doesn’t just stop there, either, as our clinicians will regularly check in with you to monitor progress and ensure everything is working as it should. You can also get in touch at any time if you have any queries about your treatment programme. We are here to help you succeed.Think you’re ready to take the first step? Start a consultation with Prescription Doctor today and let us guide you through your weight loss journey. SourcesEMC (2026): Mounjaro KwikPen 2.5mg solution for injection in pre-filled pen.EMC (2026): Wegovy 25 mg tablets.MHRA (2026): First GLP-1 tablet for weight loss approved in the UK. NEJM (2025): Oral Semaglutide at a Dose of 25 mg in Adults with Overweight or Obesity. NEJM (2022): Tirzepatide Once Weekly for the Treatment of Obesity.Novo Nordisk (2026): Early Responders to Oral Semaglutide 25 mg: A Post Hoc Analysis of the OASIS 4 Trial.University of Glasgow (2024): Continued treatment with Tirzepatide for maintenance of weight reduction in adults with obesity: The SURMOUNT-4 randomised clinical trial.EMC (2026): Mounjaro Patient Information Leaflet.EMC (2026): Wegovy tablets Patient Information Leaflet.