Mounjaro vs Ozempic vs Wegovy UK | Expert Comparison

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Cheapest Mounjaro vs Ozempic vs Wegovy - UK Price

Compare the cheapest UK price for Mounjaro from £124.99 with £20 off your first order using code Weightlossnew.

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Pricing Disclaimer: Prices on some pages may not be up to date — the live pricing table below and pricing shown during consultation are official current prices and take precedence over any other figures on the site.

Mounjaro (Tirzepatide)
Weeks 1–4

2.5mg

1 pen • 4 Weeks

£145 £124.99

£31.25 / Per Week

Your starting dose – designed to help your body adjust gently to treatment

⭐ Future Orders at £145
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Mounjaro (Tirzepatide)
Weeks 5–8

5mg

1 pen • 4 Weeks

£179 £159.00

£39.75 / Per Week

First step up – builds on your progress as your body adapts to treatment

⭐ Future Orders at £179
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Mounjaro (Tirzepatide)
Weeks 9–12

7.5mg

1 pen • 4 Weeks

£220 £200.00

£50.00 / Per Week

Mid-range dose – for continued progression and enhanced results

⭐ Future Orders at £220
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Mounjaro (Tirzepatide)
Weeks 13–16

10mg

1 pen • 4 Weeks

£245 £225.00

£56.25 / Per Week

Higher strength dose – supports significant weight loss progress

⭐ Future Orders at £245
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Mounjaro (Tirzepatide)
Weeks 17–20

12.5mg

1 pen • 4 Weeks

£270 £250.00

£62.50 / Per Week

Advanced dose – for patients requiring stronger therapeutic effect

⭐ Future Orders at £270
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Mounjaro (Tirzepatide)
Weeks 21+

15mg

1 pen • 4 Weeks

£287 £267.00

£66.75 / Per Week

Maximum dose – the highest available strength for optimal results

⭐ Future Orders at £287
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Wegovy (Semaglutide)
Weeks 1–4

0.25mg

1 pen • 4 Weeks

£89 £69.00

£17.25 / Per Week

Your starting dose – eases your body into treatment with minimal side effects

⭐ Future Orders at £89
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Wegovy (Semaglutide)
Weeks 5–8

0.5mg

1 pen • 4 Weeks

£99 £79.00

£19.75 / Per Week

First step up – continues building tolerance for long-term success

⭐ Future Orders at £99
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Wegovy (Semaglutide)
Weeks 9–12

1mg

1 pen • 4 Weeks

£119 £99.00

£24.75 / Per Week

Mid-range dose – where most patients start seeing meaningful results

⭐ Future Orders at £119
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Wegovy (Semaglutide)
Weeks 13–16

1.7mg

1 pen • 4 Weeks

£169 £149.00

£37.25 / Per Week

Higher strength – supports accelerated weight loss progress

⭐ Future Orders at £169
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Wegovy (Semaglutide)
Weeks 17+

2.4mg

1 pen • 4 Weeks

£199 £179.00

£44.75 / Per Week

Maximum dose – the highest available strength for optimal weight management

⭐ Future Orders at £199
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Wegovy Oral Pill
Weeks 1–4

1.5mg

1 pen • 4 Weeks

£83.00 £63.00

£20.75 / Per Week

Your starting dose – eases your body into treatment with minimal side effects

⭐ Future Orders at £83.00
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Wegovy Oral Pill
Weeks 5–8

4mg

1 pen • 4 Weeks

£110.00 £90.00

£27.50 / Per Week

First step up – continues building tolerance for long-term success

⭐ Future Orders at £110.00
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Wegovy Oral Pill
Weeks 9–12

9mg

1 pen • 4 Weeks

£140.00 £120.00

£35.00 / Per Week

Mid-range dose – where most patients start seeing meaningful results

⭐ Future Orders at £140.00
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Wegovy Oral Pill
Weeks 13+

25mg

1 pen • 4 Weeks

£199.00 £179.00

£49.75 / Per Week

Maximum dose – the highest available strength for optimal weight management

⭐ Future Orders at £199.00
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Mounjaro vs Ozempic vs Wegovy: Expert Comparison Guide

Published on: June 03, 2026

Choosing between mounjaro vs ozempic vs wegovy uk treatments can feel overwhelming when all three are GLP-1 receptor agonists licensed for weight management. As a UK-registered pharmacy with thousands of consultations completed, we've created this expert comparison to help you understand the clinical differences, effectiveness data, and practical considerations for each injection. All three require assessment by a UK prescriber before dispensing.

How Each Medication Works: The Science Behind GLP-1 Treatments

Mounjaro contains tirzepatide, the first dual GIP/GLP-1 receptor agonist licensed in the UK by the MHRA for weight management [1]. Unlike Ozempic and Wegovy, which only activate GLP-1 receptors, tirzepatide works on two distinct pathways that regulate appetite, blood sugar control, and energy expenditure. This dual mechanism explains why clinical trials have shown superior weight loss outcomes compared to single-pathway alternatives.

Wegovy and Ozempic both contain semaglutide, a GLP-1 receptor agonist that mimics the natural hormone your body produces after eating [2]. Wegovy is licensed specifically for chronic weight management at higher therapeutic doses, whilst Ozempic is primarily licensed for type 2 diabetes management. The active ingredient is identical, but the dosing schedules and licensed indications differ significantly between the two formulations.

All three medications slow gastric emptying, reduce appetite through central nervous system pathways, and improve insulin sensitivity [1][2]. They're administered as once-weekly subcutaneous injections using pre-filled pens, making them more convenient than daily alternatives like Saxenda. The key difference lies in their receptor activity: Mounjaro's dual action versus the single GLP-1 pathway shared by Ozempic and Wegovy.

Clinical Trial Results: Comparing Weight Loss Effectiveness

In the SURMOUNT-1 trial, patients taking the highest Mounjaro dose (15mg) achieved an average body weight reduction of 22.5% over 72 weeks, with more than half of participants losing at least 20% of their initial weight [1]. This represents the highest average weight loss seen in any obesity medication trial to date, significantly exceeding results from semaglutide-based treatments.

The STEP trials evaluated Wegovy across multiple patient populations, demonstrating an average weight loss of 14.9% over 68 weeks at the 2.4mg maintenance dose [2]. Approximately one-third of participants achieved at least 20% weight reduction, which represents substantial clinical benefit for chronic weight management. These results established semaglutide as a highly effective treatment option when combined with lifestyle modifications.

Ozempic, whilst not licensed for weight management in the UK, has been studied at doses up to 2mg weekly for diabetes management. Weight loss in these trials averaged 6-7% of body weight, notably lower than Wegovy despite containing the same active ingredient [3]. This difference reflects the lower therapeutic doses used for diabetes versus the higher doses required for significant weight reduction. Using Ozempic specifically for weight loss would be considered off-label prescribing in the UK.

Head-to-Head Comparison Data

The SURPASS-2 trial directly compared tirzepatide against semaglutide 1mg in patients with type 2 diabetes, showing superior weight loss with all tirzepatide doses [4]. Patients on tirzepatide 15mg lost an average of 12.4kg compared to 6.2kg with semaglutide 1mg over 40 weeks. Whilst this study used lower semaglutide doses than Wegovy's 2.4mg, it provides valuable insight into the comparative mechanisms of action.

Side Effects and Tolerability: What UK Patients Experience

All three medications share similar gastrointestinal side effects due to their mechanism of slowing stomach emptying. The most commonly reported adverse events include nausea, diarrhoea, constipation, vomiting, and abdominal discomfort [1][2][5]. These effects typically occur when starting treatment or increasing doses, and usually diminish within 4-8 weeks as your body adjusts to the medication.

In clinical trials, approximately 5-10% of patients discontinued Mounjaro due to gastrointestinal side effects, compared to 4-7% for Wegovy and similar rates for Ozempic [1][2]. The slightly higher discontinuation rate with tirzepatide may reflect its dual mechanism producing stronger effects, though the absolute difference remains modest. Starting at lower doses and titrating gradually, as prescribed by your UK clinician, significantly reduces the risk of severe nausea.

Rarer but serious side effects include potential thyroid C-cell tumours (seen in rodent studies but not conclusively in humans), pancreatitis, gallbladder disease, and diabetic retinopathy complications in susceptible patients [5]. All three medications carry similar warnings for these conditions. Your prescriber will assess your medical history during consultation to ensure these treatments are appropriate, and you should report any persistent abdominal pain, vision changes, or neck lumps immediately.

Managing Side Effects in Clinical Practice

Our clinical team at Cured Pharmacy advises patients to eat smaller, more frequent meals, avoid high-fat foods during the initial weeks, and stay well-hydrated to minimise gastrointestinal discomfort. Taking the injection on the same day each week and not rushing dose escalation allows your body to adapt more comfortably. If side effects persist beyond 8 weeks or significantly impact your quality of life, your prescriber may adjust your treatment plan or consider alternative options.

Feature Mounjaro Wegovy Ozempic
Active Ingredient Tirzepatide Semaglutide Semaglutide
Mechanism Dual GIP/GLP-1 agonist GLP-1 agonist GLP-1 agonist
UK Licensed Indication Weight management Weight management Type 2 diabetes
Average Weight Loss 22.5% (72 weeks) 14.9% (68 weeks) 6-7% (diabetes trials)
Maintenance Dose 5mg - 15mg weekly 2.4mg weekly 0.5mg - 2mg weekly
Injection Frequency Once weekly Once weekly Once weekly
Starting Price at Cured Pharmacy From £69.00 From £69.00 Not stocked (diabetes-only licence)
Titration Period 20+ weeks to max dose 17 weeks to maintenance 4-8 weeks

Mounjaro vs Ozempic vs Wegovy UK: Dosing Schedules and Administration

Mounjaro follows a structured dose escalation starting at 2.5mg weekly for four weeks, then increasing to 5mg, 7.5mg, 10mg, 12.5mg, and potentially 15mg based on tolerability and response [1]. Each dose increase occurs at four-week intervals, allowing your body to adjust gradually whilst monitoring weight loss progress. The pre-filled KwikPen delivers precise doses subcutaneously into your abdomen, thigh, or upper arm once weekly on the same day.

Wegovy starts at 0.25mg weekly, doubling every four weeks through 0.5mg, 1mg, and 1.7mg before reaching the 2.4mg maintenance dose at week 17 [2]. This gradual titration schedule minimises gastrointestinal side effects whilst building towards the therapeutic dose proven effective in clinical trials. The FlexTouch pen uses the same injection technique as Mounjaro, and you can inject on any day of the week as long as it remains consistent.

Ozempic dosing for diabetes typically starts at 0.25mg weekly, increasing to 0.5mg after four weeks, with potential escalation to 1mg or 2mg if needed for glycaemic control [3]. Because Ozempic is not licensed for weight management in the UK, prescribing it specifically for weight loss would be off-label. UK prescribers at registered pharmacies like Cured Pharmacy will only prescribe medications within their licensed indications or established clinical guidelines.

Cost Comparison and Value for UK Patients

At Cured Pharmacy, Mounjaro is available from £124.99 per month subject to prescriber approval, with transparent pricing displayed before you complete your free online consultation. This represents competitive UK pricing for a dual-action medication that has demonstrated superior weight loss outcomes in clinical trials. All prices include the medication, UK prescriber assessment, and discreet delivery to your address.

Wegovy costs from £135.00 at Cured Pharmacy, positioned as a more accessible option whilst still delivering clinically significant weight loss averaging 14.9% in trials [2]. The lower price point reflects the established manufacturing of semaglutide and increased market availability. Many patients achieve excellent results with Wegovy, making it a cost-effective choice for those who don't require the enhanced efficacy of dual-pathway treatment.

When comparing value, consider both the upfront cost and the percentage weight loss achieved in clinical trials. Mounjaro's higher price reflects its superior average outcomes, whilst Wegovy offers proven effectiveness at a lower monthly investment. Your UK prescriber will discuss which option aligns with your weight loss goals, medical history, and budget during your consultation. Remember that all prescription weight loss medications work best when combined with dietary modifications and increased physical activity.

NHS vs Private Prescription Costs

NHS prescriptions for weight loss medications remain limited due to NICE guidance restrictions and local formulary decisions. Most UK patients access these treatments through private prescriptions from registered online pharmacies like Cured Pharmacy, where you'll see the full cost upfront before consultation. Our superintendent pharmacist Tarun Kumar ensures all dispensing meets GPhC standards whilst offering the lowest prices guaranteed across the UK market.

Which Treatment Is Right for You? Clinical Considerations

Your suitability for Mounjaro, Ozempic, or Wegovy depends on several factors including your BMI, existing medical conditions, previous weight loss attempts, and tolerance for potential side effects. UK prescribing guidelines typically require a BMI of 30 kg/m² or above, or 27 kg/m² with weight-related comorbidities such as hypertension, type 2 diabetes, or obstructive sleep apnoea [5]. Your prescriber will calculate your BMI and review your medical history during the online consultation.

Patients with type 2 diabetes may benefit particularly from Mounjaro's dual action on both weight and glycaemic control, as tirzepatide has shown superior HbA1c reductions compared to semaglutide in head-to-head trials [4]. Wegovy remains an excellent choice for patients focused primarily on weight management without diabetes, offering proven effectiveness at a lower cost. Ozempic should only be considered if you have type 2 diabetes requiring treatment, as prescribing it solely for weight loss falls outside its UK licence.

Certain medical conditions preclude the use of GLP-1 receptor agonists, including personal or family history of medullary thyroid carcinoma, multiple endocrine neoplasia syndrome type 2, or previous severe pancreatitis [5]. Pregnant or breastfeeding women should not use these medications, and you should discontinue treatment at least two months before planned conception. Your UK prescriber will screen for these contraindications during your assessment to ensure safe, appropriate prescribing.

Starting Your Treatment Journey

Beginning treatment at Cured Pharmacy takes under three minutes with our online consultation. You'll answer questions about your weight history, medical conditions, current medications, and lifestyle factors. A UK-registered prescriber reviews your assessment, and if approved, your medication ships discreetly to your address with next-day delivery options available. You'll receive clear instructions on injection technique, dose escalation schedules, and when to contact our clinical team with concerns.

Scientific References

  1. Jastreboff, A. M., et al. (2022). Tirzepatide Once Weekly for the Treatment of Obesity. New England Journal of Medicine, 387(3), 205–216. https://doi.org/10.1056/NEJMoa2206038 [accessed 13 August 2026]
  2. Wilding, J. P. H., et al. (2021). Once-Weekly Semaglutide in Adults with Overweight or Obesity. New England Journal of Medicine, 384(11), 989–1002. https://doi.org/10.1056/NEJMoa2032183 [accessed 13 August 2026]
  3. Davies, M., et al. (2017). Semaglutide 2·4 mg once a week in adults with overweight or obesity, and type 2 diabetes (STEP 2): a randomised, double-blind, double-dummy, placebo-controlled, phase 3 trial. The Lancet, 397(10278), 971–984. https://doi.org/10.1016/S0140-6736(21)00213-0 [accessed 13 August 2026]
  4. Frías, J. P., et al. (2021). Tirzepatide versus Semaglutide Once Weekly in Patients with Type 2 Diabetes. New England Journal of Medicine, 385(6), 503–515. https://doi.org/10.1056/NEJMoa2107519 [accessed 13 August 2026]
  5. Medicines and Healthcare products Regulatory Agency (MHRA). (2023). GLP-1 receptor agonists: reports of diabetic ketoacidosis when concomitant insulin was rapidly reduced or discontinued. Drug Safety Update, 16(9). https://www.gov.uk/drug-safety-update [accessed 13 August 2026]
  6. NHS. (2026). Tirzepatide: a medicine to manage type 2 diabetes and treat obesity. https://www.nhs.uk/medicines/tirzepatide/ Accessed 13 August 2026.
  7. NHS. (2026). Overweight and obesity in adults. https://www.nhs.uk/conditions/overweight-and-obesity/ Accessed 13 August 2026.
  8. NHS England. (2026). Weight management injections. https://www.england.nhs.uk/ourwork/prevention/obesity/medicines-for-obesity/weight-management-injections/ Accessed 13 August 2026.

Information on this page is for educational purposes only and is not medical advice. All prescription treatments require clinical assessment by a UK-registered prescriber. Always consult a qualified healthcare professional before starting any new medication. Weight loss results vary between individuals and depend on adherence to treatment, dietary modifications, and lifestyle changes.

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Jane L.

"Brilliant. Lost 4 stone on mounjaro no side effects at all. Cured pharmacy are excellent. Always helpful pens sent out quickly always comes with needles and sterile wipes. If you want to go on GLP-1 go to cured pharmacy. So professional. Thank you cured pharmacy you changed my health and well being."

Ann-Marie

"I absolutely love this product, I have been using 2.5mg as maintenance dose and have managed to control my weight without any side effects and can still eat well balanced meals. The pharmacy is very efficient friendly and helpful I would not purchase from anywhere else."

Sacha W.

"So far I'm really impressed by my results it's crazy cause I'm not snacking like how I used to do and I see my face slimming down already and it's only been 2 and a half weeks. Can't wait to give my feedback in 5 months time thank you cured pharmacy."

Kimberly G.

"Mounjaro has corrected my hormonal weight gain during menopause. I am using it now to maintain that balance. The results for me have been exceptional!"

Jennifer

"Great really helps cure those nasty habits can't wait for my next mounjaro pen."

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Faq

Is Mounjaro better than Wegovy for weight loss?
Clinical trials show Mounjaro (tirzepatide) produces greater average weight loss than Wegovy (semaglutide), with patients losing 22.5% versus 14.9% of body weight respectively. However, both are highly effective treatments, and your UK prescriber will recommend the most appropriate option based on your individual circumstances, medical history, and budget.
Can I use Ozempic for weight loss in the UK?
Ozempic is licensed in the UK only for type 2 diabetes management, not weight loss. Prescribing it specifically for weight management would be off-label use. Wegovy contains the same active ingredient (semaglutide) but at higher doses specifically licensed for chronic weight management, making it the appropriate choice for weight loss.
How quickly do Mounjaro vs Ozempic vs Wegovy work?
Most patients notice reduced appetite within 1-2 weeks of starting any of these medications, with measurable weight loss typically beginning by week 4-8. Maximum weight loss occurs over 60-72 weeks as you reach maintenance doses. The gradual dose escalation schedules mean you'll see progressive results rather than immediate dramatic changes.
Do Mounjaro and Wegovy have the same side effects?
Both medications share similar gastrointestinal side effects including nausea, diarrhoea, constipation, and vomiting due to their mechanism of slowing stomach emptying. Mounjaro shows slightly higher discontinuation rates (5-10%) compared to Wegovy (4-7%), though most patients tolerate both medications well with proper dose titration.
Which is cheaper: Mounjaro or Wegovy in the UK?
Wegovy costs from £135.00 at Cured Pharmacy whilst Mounjaro starts from £124.99 making Wegovy the more affordable option for UK patients. The price difference reflects Mounjaro's newer dual-action mechanism and superior average weight loss outcomes in clinical trials, whilst Wegovy offers proven effectiveness at a lower monthly cost.
Can I switch from Wegovy to Mounjaro or vice versa?
Switching between GLP-1 treatments is possible under medical supervision, though you'll typically need to restart at lower doses rather than transferring directly to equivalent strengths. Your UK prescriber at Cured Pharmacy will create an appropriate transition plan if you wish to switch medications based on your response, tolerability, or changing clinical needs.
How long do I need to take Mounjaro vs Ozempic vs Wegovy?
These medications are intended for long-term chronic weight management rather than short-term use. Clinical trials show that discontinuing treatment typically results in weight regain, so most patients continue treatment for 1-2 years or longer whilst maintaining lifestyle modifications. Your prescriber will review your progress regularly to assess ongoing suitability.
Are Mounjaro, Wegovy, and Ozempic available on the NHS?
NHS availability remains extremely limited due to NICE guidance restrictions and local formulary decisions, with most patients accessing these treatments through private prescriptions. Cured Pharmacy offers transparent upfront pricing from £135.00 for Wegovy and £135.00 for Mounjaro, with all costs displayed before your free online consultation with a UK prescriber.
Which is cheaper in the UK - Mounjaro, Ozempic or Wegovy?
Mounjaro starts from £124.99 at Cured Pharmacy, while Wegovy starts from £69.00 for the lowest dose and Ozempic typically costs more per month. However, like-for-like comparisons depend on the therapeutic dose you require, as each medication has different dosing schedules and strengths.
Can I switch from Ozempic or Wegovy to Mounjaro in the UK?
Yes, you can switch between these medications under prescriber guidance. Cured Pharmacy's UK-registered clinicians will review your medical history and current treatment to ensure Mounjaro is suitable and determine the appropriate starting dose when transitioning from Ozempic or Wegovy.
Is Mounjaro more effective than Ozempic or Wegovy for weight loss?
Clinical trials suggest Mounjaro may lead to greater weight loss than Ozempic or Wegovy for some patients, as it works on two hormonal pathways rather than one. However, individual results vary, and Cured Pharmacy's prescribers can discuss which option best suits your health goals during your online consultation.
Why is Mounjaro priced differently to Ozempic and Wegovy in the UK?
Mounjaro pricing reflects its dual-action formulation and newer market entry, while Ozempic and Wegovy have different licensing and supply factors. At Cured Pharmacy, we offer competitive pricing on all three medications, with Mounjaro starting from £124.99 and an additional £20 off your first order with code Weightlossnew.
Do I need a new prescription to switch from Wegovy to Mounjaro?
Yes, switching from Wegovy or Ozempic to Mounjaro requires a new prescription, as they are different medications with distinct dosing protocols. Cured Pharmacy's online consultation makes this process simple, allowing our UK clinicians to assess your suitability and issue a Mounjaro prescription if appropriate.
Tarun Kumar, Prescribing Pharmacist

Medically reviewed by

Tarun Kumar, Prescribing Pharmacist (GPhC 2233073)

Reviewed on: June 03, 2026

Last reviewed: 13 August 2026

Last updated on 13 August 2026.

Review History

Our experts continually monitor new findings in health and medicine, and we update our articles when new information becomes available.

Why this page was updated on 13 August 2026

Content checked and updated as part of our periodic review, to ensure accuracy and currentness.

Current version (13 August 2026)

Edited by: The Editorial Team

Medically reviewed by:

Tarun Kumar, GPhC No. 2233073, Prescribing Pharmacist


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