Wegovy vs Mounjaro Differences UK | Cured Pharmacy

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Wegovy vs Mounjaro Differences - Cheapest UK Price

Compare Wegovy and Mounjaro with the cheapest UK price from £124.99 plus £20 off first order with 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 vs Mounjaro Differences: Clinical Comparison Guide

Understanding the wegovy vs mounjaro differences uk is essential when choosing between these two leading weight loss injections. Both are MHRA-licensed treatments available through UK prescribers, but they work through distinct mechanisms and deliver different clinical outcomes. At Cured Pharmacy, our clinical team helps patients navigate these differences with transparent pricing and expert guidance.

Wegovy vs Mounjaro Differences: How They Work

The fundamental difference between Wegovy and Mounjaro lies in their receptor activity. Wegovy contains semaglutide, a GLP-1 receptor agonist that mimics one natural hormone involved in appetite regulation and blood sugar control [1]. Mounjaro contains tirzepatide, the UK's first dual GIP/GLP-1 receptor agonist, activating two complementary pathways simultaneously [2].

This dual-action mechanism gives Mounjaro a distinct pharmacological advantage. By targeting both glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptors, tirzepatide produces more pronounced effects on insulin secretion, glucagon suppression, and gastric emptying than single-pathway treatments [2]. In clinical practice, this translates to greater average weight reduction and improved metabolic markers.

Both medications slow gastric emptying and reduce appetite through central nervous system pathways, but the addition of GIP receptor activation in Mounjaro appears to enhance fat metabolism and energy expenditure beyond what GLP-1 agonism alone achieves [3]. Your UK prescriber will assess which mechanism better suits your medical history and weight loss goals.

Clinical Efficacy: Weight Loss Results Compared

Head-to-head trial data reveals significant differences in average weight reduction between these treatments. In the SURPASS-2 trial, which directly compared tirzepatide to semaglutide 1mg, patients taking the highest tirzepatide dose (15mg) achieved an average 12.4kg weight loss compared to 6.2kg with semaglutide over 40 weeks [2].

The STEP trials demonstrated that Wegovy (semaglutide 2.4mg) produced an average 14.9% body weight reduction over 68 weeks in adults with obesity [1]. Meanwhile, the SURMOUNT-1 trial showed Mounjaro achieving up to 22.5% average body weight reduction at the 15mg maintenance dose over 72 weeks — representing approximately 50% greater weight loss than semaglutide-based treatments [4].

These are average outcomes from controlled clinical trials. Individual results vary considerably based on baseline weight, adherence to lifestyle modifications, dose tolerance, and metabolic factors. Both medications require commitment to dietary changes and increased physical activity to achieve optimal results, and all treatment must be supervised by a UK prescriber who monitors your progress and adjusts dosing accordingly.

Time to Therapeutic Effect

Both treatments follow gradual dose escalation protocols to minimise gastrointestinal side effects. Wegovy typically starts at 0.25mg weekly, increasing monthly until reaching the 2.4mg maintenance dose after 16-20 weeks [1]. Mounjaro begins at 2.5mg weekly, with monthly increases to a maintenance dose between 5mg and 15mg, depending on individual response and tolerability [2].

Patients generally notice appetite suppression within the first 2-4 weeks of either treatment, with measurable weight loss becoming evident by week 4-8. Peak efficacy occurs after reaching and maintaining the therapeutic dose for several months, which is why both treatments are intended as long-term interventions rather than short-term solutions.

Side Effects and Tolerability Differences

Both Wegovy and Mounjaro share a similar side effect profile, as expected from their related mechanisms of action. The most common adverse effects are gastrointestinal: nausea, diarrhoea, constipation, vomiting, and abdominal discomfort [1][2]. These symptoms typically occur during dose escalation phases and often diminish as the body adapts to treatment.

Clinical trial data suggests Mounjaro may produce slightly higher rates of gastrointestinal side effects compared to Wegovy, particularly at higher doses. In SURPASS-2, nausea occurred in approximately 17-22% of tirzepatide patients versus 18% with semaglutide, though most cases were mild to moderate and transient [2]. Discontinuation rates due to adverse events were comparable between treatments, ranging from 4-7% across trials [1][2][4].

Both medications carry similar contraindications and warnings. Neither should be used in patients with personal or family history of medullary thyroid carcinoma or multiple endocrine neoplasia syndrome type 2. Your UK prescriber will review your complete medical history during consultation to identify any contraindications, and ongoing monitoring is essential to detect and manage potential adverse effects promptly.

Feature Wegovy (Semaglutide) Mounjaro (Tirzepatide)
Mechanism GLP-1 receptor agonist Dual GIP/GLP-1 receptor agonist
Average weight loss Up to 14.9% over 68 weeks Up to 22.5% over 72 weeks
Dosing frequency Once weekly injection Once weekly injection
Maintenance dose 2.4mg (fixed target) 5mg-15mg (flexible titration)
Starting price at Cured From £69.00 From £69.00
MHRA licensed Yes Yes
Common side effects Nausea, diarrhoea, constipation Nausea, diarrhoea, constipation
Treatment duration Long-term (ongoing) Long-term (ongoing)

Wegovy vs Mounjaro Differences in Administration and Convenience

Both treatments are administered as once-weekly subcutaneous injections using pre-filled pens designed for home use. The injection technique is identical: patients inject into the abdomen, thigh, or upper arm, rotating sites weekly to prevent lipodystrophy. Neither requires refrigeration after first use, though unopened pens must be stored between 2-8°C [5].

Mounjaro's KwikPen and Wegovy's FlexTouch pen are both single-dose, disposable devices that don't require manual needle attachment or dose dialling for most strengths. The injection process takes less than 30 seconds, and both manufacturers provide detailed patient education materials. Cured Pharmacy supplies all prescribed doses with comprehensive administration guidance from our clinical team.

The key practical difference is dosing flexibility. Mounjaro offers five maintenance dose options (2.5mg, 5mg, 7.5mg, 10mg, 15mg), allowing more granular titration based on individual response and tolerability [2]. Wegovy has a fixed target dose of 2.4mg for weight management, though patients who cannot tolerate this may remain on lower doses under prescriber supervision [1].

Treatment Duration and Long-Term Use

Both Wegovy and Mounjaro are intended as long-term treatments for chronic weight management. Clinical trials extending beyond one year demonstrate that weight loss plateaus after 60-72 weeks, with patients maintaining their reduced weight while continuing treatment [1][4]. Discontinuation typically results in gradual weight regain, highlighting the chronic nature of obesity and the need for sustained intervention.

UK prescribers assess treatment continuation every 3-6 months, evaluating weight loss progress, tolerability, and overall health improvements. NICE guidance suggests considering discontinuation if patients haven't achieved at least 5% weight loss after 6 months at the therapeutic dose, though individual circumstances vary and clinical judgement applies.

Cost Comparison and UK Availability

At Cured Pharmacy, Mounjaro is available from £124.99 per four-week supply, whilst Wegovy starts from £135.00, making it a more accessible option for many UK patients. Both prices include your UK prescriber consultation, genuine licensed medication, and discreet next-day delivery. Final cost depends on your prescribed dose, which varies based on your treatment phase and clinical response.

Supply availability has improved significantly across the UK market following manufacturing challenges in 2023. Both treatments are now consistently available through registered UK pharmacies, though demand remains high. Cured Pharmacy maintains reliable stock levels and transparent communication if any supply constraints arise, ensuring continuity of care for established patients.

Neither Wegovy nor Mounjaro is routinely available on NHS prescription for weight management in most UK regions, though some integrated care boards provide access to patients meeting strict clinical criteria. Private prescription through registered UK pharmacies like Cured Pharmacy remains the primary access route for most patients, with prices reflecting the genuine UK-licensed product and full clinical oversight.

Making Your Choice: Which Treatment Is Right for You?

Choosing between Wegovy and Mounjaro depends on multiple factors beyond average weight loss percentages. Your UK prescriber will consider your baseline BMI, previous weight loss attempts, medical history including cardiovascular risk factors, tolerance for gastrointestinal side effects, budget considerations, and personal treatment preferences during your clinical assessment.

Mounjaro may be more suitable for patients seeking maximum average weight reduction and who have higher baseline BMI, whilst Wegovy offers proven efficacy with a slightly lower cost and well-established safety profile from several years of UK clinical use. Some patients who experience intolerable side effects with one medication find better tolerance with the other, despite their similar mechanisms.

At Cured Pharmacy, our UK-registered clinical team led by Superintendent Pharmacist Tarun Kumar (GPhC 2233073) provides personalised treatment recommendations based on your individual circumstances. Your free online consultation takes under 3 minutes, and our prescribers are available to answer questions throughout your treatment journey. All medications are genuine UK-licensed products dispensed from our GPhC-registered pharmacy (9012511), with complete transparency on pricing before you commit to treatment.

Starting Your Weight Loss Treatment

Beginning treatment with either Wegovy or Mounjaro requires completion of a clinical assessment by a UK prescriber. This consultation reviews your medical history, current medications, weight loss goals, and any contraindications. If treatment is deemed appropriate and safe, your prescription is issued and your medication dispatched for next-day delivery in discreet, unmarked packaging.

Both treatments work best alongside lifestyle modifications including a reduced-calorie diet and increased physical activity. Your prescriber will provide guidance on dietary adjustments and realistic weight loss expectations. Regular follow-up consultations ensure your treatment remains safe, effective, and appropriately dosed as you progress through your weight management journey.

Scientific References

  1. Wilding, J. P. H., Batterham, R. L., Calanna, S., Davies, M., Van Gaal, L. F., Lingvay, I., McGowan, B. M., Rosenstock, J., Tran, M. T. D., Wadden, T. A., Wharton, S., Yokote, K., Zeuthen, N., & Kushner, R. F. (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
  2. Frías, J. P., Davies, M. J., Rosenstock, J., Pérez Manghi, F. C., Fernández Landó, L., Bergman, B. K., Liu, B., Cui, X., Brown, K. D., SURPASS-2 Investigators. (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
  3. Nauck, M. A., Quast, D. R., Wefers, J., & Meier, J. J. (2021). GLP-1 receptor agonists in the treatment of type 2 diabetes – state-of-the-art. Molecular Metabolism, 46, 101102. https://doi.org/10.1016/j.molmet.2020.101102
  4. Jastreboff, A. M., Aronne, L. J., Ahmad, N. N., Wharton, S., Connery, L., Alves, B., Kiyosue, A., Zhang, S., Liu, B., Bunck, M. C., Stefanski, A., & SURMOUNT-1 Investigators. (2022). Tirzepatide Once Weekly for the Treatment of Obesity. New England Journal of Medicine, 387(3), 205–216. https://doi.org/10.1056/NEJMoa2206038
  5. Medicines and Healthcare products Regulatory Agency. (2023). Public Assessment Report: Mounjaro 2.5 mg solution for injection in pre-filled pen (tirzepatide). GOV.UK. https://www.gov.uk/government/publications/mounjaro-tirzepatide

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. Individual results may vary, and weight loss outcomes depend on adherence to lifestyle modifications alongside medication use.

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Faq

What are the main wegovy vs mounjaro differences uk patients should know?
The primary difference is that Mounjaro uses a dual GIP/GLP-1 mechanism producing greater average weight loss (up to 22.5%) compared to Wegovy's single GLP-1 pathway (up to 14.9%), though both are effective MHRA-licensed treatments requiring UK prescriber assessment.
Is Mounjaro or Wegovy better for weight loss?
Clinical trials show Mounjaro produces greater average weight reduction than Wegovy, but 'better' depends on individual factors including tolerability, medical history, and cost. Your UK prescriber will recommend the most appropriate treatment based on your specific circumstances.
Can I switch from Wegovy to Mounjaro or vice versa?
Yes, switching between treatments is possible under prescriber supervision. Your UK clinician will determine appropriate starting doses and monitor your transition, as the medications have different potencies and dosing schedules requiring careful adjustment.
Do Wegovy and Mounjaro have the same side effects?
Both share similar gastrointestinal side effects including nausea, diarrhoea, and constipation, though Mounjaro may have slightly higher rates at therapeutic doses. Most side effects are mild to moderate and diminish over time.
How much does Mounjaro cost compared to Wegovy in the UK?
At Cured Pharmacy, Wegovy starts from £135.00 whilst Mounjaro starts from £124.99 per four-week supply. Both prices include UK prescriber consultation and next-day delivery, with final cost depending on your prescribed dose.
Which is more effective: tirzepatide or semaglutide?
Direct comparison trials show tirzepatide (Mounjaro) produces approximately 50% greater average weight loss than semaglutide (Wegovy), with the SURPASS-2 trial demonstrating 12.4kg versus 6.2kg at 40 weeks. Individual results vary considerably.
Can I get Wegovy or Mounjaro on the NHS?
NHS availability is extremely limited and restricted to patients meeting strict clinical criteria in specific regions. Most UK patients access these treatments through private prescription from registered pharmacies like Cured Pharmacy, with transparent pricing and full clinical oversight.
How long does it take to see results with Wegovy vs Mounjaro?
Both treatments produce noticeable appetite suppression within 2-4 weeks, with measurable weight loss by week 4-8. Peak efficacy occurs after reaching maintenance doses (16-20 weeks), with maximum average weight reduction achieved by 60-72 weeks of continued treatment.
What are the main differences between Wegovy and Mounjaro for weight loss?
Wegovy contains semaglutide and targets one hormone (GLP-1), while Mounjaro contains tirzepatide and targets two hormones (GLP-1 and GIP). Clinical trials suggest Mounjaro may lead to slightly greater average weight loss, though both are highly effective when prescribed by UK-registered healthcare professionals at Cured Pharmacy.
Is Mounjaro or Wegovy cheaper in the UK?
Mounjaro starts from £124.99 at Cured Pharmacy, while Wegovy starts from £69.00 for the lowest dose, making Wegovy initially cheaper. However, dose-for-dose at therapeutic levels, pricing becomes comparable, and Cured Pharmacy offers £20 off your first order of either with code Weightlossnew.
Can I switch from Wegovy to Mounjaro in the UK?
Yes, you can switch from Wegovy to Mounjaro under guidance from a UK-registered prescriber. Cured Pharmacy's online consultation allows you to discuss switching medications, and our clinicians will assess your suitability and recommend the appropriate starting dose of Mounjaro based on your treatment history.
Which is better for weight loss - Wegovy or Mounjaro?
Both Wegovy and Mounjaro are highly effective for weight loss, with clinical evidence supporting both treatments. Mounjaro's dual-action mechanism has shown slightly higher average weight loss in some studies, but individual results vary. Cured Pharmacy's UK prescribers can help determine which option suits your specific health profile and weight loss goals during your online consultation.
Do Wegovy and Mounjaro have different side effects in the UK?
Wegovy and Mounjaro share similar common side effects including nausea, vomiting, and diarrhoea, as both are GLP-1 receptor agonists. Some patients report better tolerability with one over the other. Cured Pharmacy provides full side effect information during your consultation and ongoing support throughout your treatment journey with either medication.
Tarun Kumar, Prescribing Pharmacist

Medically reviewed by

Tarun Kumar, Prescribing Pharmacist (GPhC 2233073)

Last reviewed: 17 July 2026