Which Is Better Mounjaro or Wegovy? UK Comparison 2025

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Mounjaro vs Wegovy - Compare Prices & Cheapest UK Option

Compare Mounjaro and Wegovy at the cheapest UK price from £124.99 with £20 off using code Weightlossnew.

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£145.00 From £124.99 £20 discount using discount 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

£109 £89.00

£22.25 / Per Week

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

⭐ Future Orders at £109
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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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Which Is Better Mounjaro or Wegovy? A Clinical Comparison for UK Patients

When deciding which is better Mounjaro or Wegovy, UK patients often weigh clinical efficacy, side effect profiles, dosing convenience, and cost. Both are prescription-only GLP-1 receptor agonist injections licensed by the MHRA for chronic weight management, yet they differ significantly in mechanism, trial outcomes, and suitability. This evidence-based comparison from Cured Pharmacy's clinical team examines real-world data to help you and your prescriber determine the optimal choice for your weight loss journey.

Which Is Better Mounjaro or Wegovy: Understanding the Core Differences

Mounjaro (tirzepatide) and Wegovy (semaglutide) both belong to the incretin mimetic class but operate through distinct pharmacological pathways. Wegovy activates GLP-1 receptors exclusively, suppressing appetite and slowing gastric emptying [1]. Mounjaro, however, is a dual GIP/GLP-1 receptor agonist, engaging both glucose-dependent insulinotropic polypeptide and GLP-1 pathways simultaneously [2]. This dual mechanism may explain why tirzepatide often demonstrates superior weight reduction in head-to-head trials, though individual response varies considerably.

Both medications require subcutaneous injection once weekly and are licensed in the UK for adults with a BMI ≥30 kg/m² or ≥27 kg/m² with at least one weight-related comorbidity, subject to prescriber approval [3]. Cured Pharmacy supplies genuine UK-licensed Mounjaro from £124.99 and Wegovy from £124.99, with all prescriptions issued following a free online consultation by our UK-registered clinical team under the supervision of Superintendent Pharmacist Tarun Kumar (GPhC 2233073).

Clinical Efficacy: Which Is Better Mounjaro or Wegovy for Weight Loss?

The SURMOUNT-1 trial demonstrated that participants on the highest Mounjaro dose (15 mg) achieved an average weight reduction of 20.9% over 72 weeks, compared to 2.4% with placebo [2]. In contrast, the STEP 1 trial for Wegovy reported an average 14.9% body weight loss at 68 weeks on the 2.4 mg maintenance dose versus 2.4% placebo [1]. While direct comparison trials are limited, these pivotal studies suggest tirzepatide may offer marginally greater average weight loss, though both medications significantly outperform placebo.

Individual response depends on baseline metabolic health, adherence, lifestyle modifications, and genetic factors. Some patients tolerate semaglutide better and achieve satisfactory outcomes on Wegovy, while others respond more robustly to Mounjaro's dual-agonist mechanism. A UK prescriber will assess your medical history, current medications, and weight loss goals to recommend the most appropriate option during your clinical consultation at Cured Pharmacy.

Comparative Trial Data: Mounjaro vs Wegovy Head-to-Head

The SURPASS-2 trial directly compared tirzepatide (5 mg, 10 mg, 15 mg) against semaglutide 1 mg in type 2 diabetes patients, showing superior HbA1c reduction and greater weight loss across all tirzepatide doses [4]. Although this trial used the lower semaglutide dose approved for diabetes (not the 2.4 mg Wegovy dose), it provides early evidence supporting tirzepatide's enhanced efficacy. Ongoing trials comparing tirzepatide 15 mg directly to semaglutide 2.4 mg will offer more definitive answers for weight management indications.

Side Effects Profile: Which Is Better Mounjaro or Wegovy for Tolerability?

Both medications share a similar adverse event profile, with gastrointestinal symptoms being most common. Nausea, vomiting, diarrhoea, and constipation occur in 20–50% of users during dose escalation [1][2]. These effects typically diminish after 4–8 weeks as the body adapts. Mounjaro's dual-agonist action may produce slightly higher rates of nausea in some patients, though clinical trial discontinuation rates due to adverse events were comparable between tirzepatide (4–7%) and semaglutide (4–6%) [4].

Rare but serious risks include pancreatitis, gallbladder disease, and medullary thyroid carcinoma (contraindicated in patients with personal or family history of MTC or MEN 2 syndrome) [3]. Both medications carry identical MHRA warnings regarding these conditions. Your prescriber will review your full medical history during the online consultation to ensure suitability and discuss strategies to minimise side effects, such as gradual dose titration and dietary adjustments.

Feature Mounjaro (Tirzepatide) Wegovy (Semaglutide)
Mechanism Dual GIP/GLP-1 agonist GLP-1 agonist
Average Weight Loss (trials) Up to 20.9% at 72 weeks Up to 14.9% at 68 weeks
Starting Dose 2.5 mg weekly 0.25 mg weekly
Maximum Dose 15 mg weekly 2.4 mg weekly
Injection Frequency Once weekly Once weekly
Common Side Effects Nausea, vomiting, diarrhoea Nausea, vomiting, diarrhoea
Starting Price (Cured Pharmacy) From £145.00 From £89.00
Discount (code Weightlossnew) £10 off first order £10 off first order

Dosing and Administration: Which Is Better Mounjaro or Wegovy for Convenience?

Wegovy follows a fixed escalation schedule: 0.25 mg weekly for 4 weeks, 0.5 mg for 4 weeks, 1 mg for 4 weeks, 1.7 mg for 4 weeks, then 2.4 mg maintenance [1]. Mounjaro starts at 2.5 mg weekly, increasing by 2.5 mg increments every 4 weeks up to a maximum of 15 mg, allowing for more flexible dose optimisation based on individual tolerance and response [2]. Both are administered via pre-filled single-dose pens, making self-injection straightforward for most patients.

From a practical standpoint, which is better Mounjaro or Wegovy often comes down to personal preference regarding dose flexibility and pen design. Some patients appreciate Mounjaro's broader dosing range for fine-tuning, while others prefer Wegovy's established escalation protocol. Both pens are stored in the refrigerator before first use and can be kept at room temperature for up to 28 days once opened, ensuring travel convenience.

Injection Technique and Storage Requirements

Both Mounjaro and Wegovy are injected subcutaneously into the abdomen, thigh, or upper arm. Patients should rotate injection sites weekly to minimise lipodystrophy risk. The pens are designed for single use and should be disposed of in a sharps container. Cured Pharmacy provides comprehensive patient information leaflets and optional video guidance to ensure correct administration technique, maximising treatment efficacy and safety.

Cost and Accessibility: Which Is Better Mounjaro or Wegovy for UK Patients?

Pricing is a significant consideration when evaluating which is better Mounjaro or Wegovy. At Cured Pharmacy, Mounjaro is available from £124.99 and Wegovy from £124.99, both representing the cheapest UK price for genuine licensed products. New patients Save £20 off their first order with code Weightlossnew, reducing the initial Mounjaro cost to £124.99 and Wegovy to £124.99. All prices are transparent and displayed upfront before your free online consultation, with no hidden fees.

NHS prescription availability for both medications is currently limited to specialist weight management services in England, with restricted eligibility criteria [5]. Most UK patients access these treatments privately through registered online pharmacies like Cured Pharmacy, where our UK-registered prescribers complete clinical assessments in under 3 minutes. We guarantee 100% discreet packaging and next-day delivery across the UK, ensuring continuity of treatment without delays.

Making the Decision: Which Is Better Mounjaro or Wegovy for Your Needs?

Ultimately, which is better Mounjaro or Wegovy depends on individual clinical factors, tolerance, weight loss goals, and budget. Mounjaro may be preferable if you seek maximum average weight reduction and tolerate gastrointestinal side effects well, particularly given its dual-agonist mechanism and higher dose ceiling. Wegovy remains an excellent choice for patients who respond robustly to GLP-1 monotherapy, prefer a lower starting price, or have prior positive experience with semaglutide formulations like Ozempic.

Cured Pharmacy's clinical team, led by Superintendent Pharmacist Tarun Kumar (GPhC 2233073), evaluates each patient individually during the online consultation. We consider your medical history, contraindications, current medications, and personal preferences to recommend the most appropriate treatment. Both Mounjaro and Wegovy are dispensed only following prescriber approval, ensuring safe, evidence-based weight management tailored to your unique circumstances.

Combining Medication with Lifestyle Modifications

Neither Mounjaro nor Wegovy is a standalone solution. Clinical trials demonstrating their efficacy included structured dietary counselling and increased physical activity [1][2]. For optimal results, patients should adopt a reduced-calorie diet (typically 500–750 kcal deficit daily) and aim for at least 150 minutes of moderate-intensity exercise weekly. Cured Pharmacy provides optional lifestyle guidance resources alongside your prescription to maximise long-term weight loss success and metabolic health improvements.

Scientific References

  1. Wilding, J. P. H., Batterham, R. L., Calanna, S., et al. (2021). Once-weekly semaglutide in adults with overweight or obesity. New England Journal of Medicine, 384(11), 989–1002.
  2. Jastreboff, A. M., Aronne, L. J., Ahmad, N. N., et al. (2022). Tirzepatide once weekly for the treatment of obesity. New England Journal of Medicine, 387(3), 205–216.
  3. Medicines and Healthcare products Regulatory Agency. (2023). Public Assessment Report: Mounjaro 2.5 mg solution for injection in pre-filled pen. MHRA.
  4. Frías, J. P., Davies, M. J., Rosenstock, J., et al. (2021). Tirzepatide versus semaglutide once weekly in patients with type 2 diabetes (SURPASS-2): a randomised, open-label, phase 3 trial. The Lancet, 398(10295), 64–77.
  5. National Institute for Health and Care Excellence. (2023). Semaglutide for managing overweight and obesity [TA875]. NICE.

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.

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Faq

Which is better Mounjaro or Wegovy for rapid weight loss?
Clinical trials suggest Mounjaro (tirzepatide) may produce slightly greater average weight loss (up to 20.9%) compared to Wegovy (up to 14.9%), though individual response varies and both require prescriber approval and lifestyle modifications.
Can I switch from Wegovy to Mounjaro if I'm not losing enough weight?
Yes, switching is possible under prescriber supervision. Your Cured Pharmacy clinician will assess your current response, tolerance, and medical history to determine if transitioning to Mounjaro's dual-agonist mechanism is appropriate for your weight loss goals.
Which is better Mounjaro or Wegovy for minimising side effects?
Both medications share similar gastrointestinal side effect profiles, with nausea and diarrhoea being most common. Individual tolerance varies, and gradual dose escalation helps minimise adverse events regardless of which treatment you choose.
Is Mounjaro or Wegovy cheaper in the UK?
Wegovy is generally more affordable, starting from £124.99 at Cured Pharmacy compared to Mounjaro at £124.99. Both qualify for £20 off your first order with code Weightlossnew, offering the cheapest UK price for genuine licensed products.
Which is better Mounjaro or Wegovy if I have type 2 diabetes?
Both are effective for weight loss in patients with type 2 diabetes, though Mounjaro demonstrated superior HbA1c reduction in the SURPASS-2 trial. Your prescriber will consider your glycaemic control, current diabetes medications, and hypoglycaemia risk when recommending treatment.
How long does it take to see results with Mounjaro vs Wegovy?
Most patients notice appetite suppression within 1–2 weeks and measurable weight loss by 4–8 weeks on either medication. Maximum efficacy typically occurs after reaching maintenance dose, around 16–20 weeks for Wegovy and 20–24 weeks for Mounjaro.
Can I use Mounjaro or Wegovy if I'm pregnant or breastfeeding?
No, both Mounjaro and Wegovy are contraindicated during pregnancy and breastfeeding due to insufficient safety data. Women of childbearing potential should use reliable contraception and discontinue treatment at least 2 months before planned conception.
Which is better Mounjaro or Wegovy for long-term weight maintenance?
Both medications support long-term weight maintenance when continued alongside lifestyle modifications, though weight regain commonly occurs after discontinuation. Long-term safety and efficacy data are still emerging, and prescribers typically recommend ongoing treatment for sustained results.
Tarun Kumar, Prescribing Pharmacist

Medically reviewed by

Tarun Kumar, Prescribing Pharmacist (GPhC 2233073)

Last reviewed: 30 July 2026