Orlistat vs Mounjaro: Both In Stock UK | Cured Pharmacy

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Cheapest Orlistat vs Mounjaro - UK Price £124.99

Compare Orlistat and Mounjaro at the cheapest UK price 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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Orlistat vs Mounjaro: Both In Stock UK

Published on: June 03, 2026

When considering an orlistat vs mounjaro uk comparison, you're weighing two fundamentally different approaches to weight management—both available with transparent pricing at Cured Pharmacy. Orlistat works by blocking fat absorption in your digestive system, whilst Mounjaro (tirzepatide) is a dual-action injectable that regulates appetite and blood sugar through hormone pathways. Understanding which treatment aligns with your clinical profile, lifestyle, and weight loss goals requires insight from our UK prescribers, who assess every patient individually before recommending a prescription treatment.

How Orlistat and Mounjaro Work Differently

Orlistat is a lipase inhibitor that prevents approximately 30% of dietary fat from being absorbed through your intestinal wall [1]. The unabsorbed fat passes through your digestive system and is eliminated, reducing your overall calorie intake from fatty meals. It's taken as a 120mg capsule three times daily with meals containing fat, and has been licensed in the UK for over two decades as both a prescription medicine (Xenical) and a lower-dose over-the-counter option (Alli 60mg) [1].

Mounjaro contains tirzepatide, the first dual GIP/GLP-1 receptor agonist licensed by the MHRA for weight management [2]. It mimics two naturally occurring hormones—glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1)—that regulate appetite, slow gastric emptying, and improve insulin sensitivity. Administered as a once-weekly subcutaneous injection, Mounjaro works systemically rather than locally in the gut, producing more substantial weight reduction in clinical trials compared to single-pathway treatments [2][3].

The mechanism difference is crucial: Orlistat requires dietary discipline and works only when you consume fat, whilst Mounjaro suppresses appetite centrally and works continuously between doses. In the SURPASS-3 trial, participants on the highest Mounjaro dose achieved an average 22.5% body weight reduction over 72 weeks [2], compared to Orlistat's typical 5-10% weight loss when combined with diet and exercise [1].

Clinical Efficacy: What the Evidence Shows

Orlistat's efficacy has been demonstrated across multiple trials involving over 30,000 participants. A meta-analysis published in the British Medical Journal found that Orlistat users lost an average of 2.9kg more than placebo groups over 12 months when combined with a reduced-calorie diet [1]. The treatment works best for patients who can commit to a low-fat eating plan and tolerate gastrointestinal side effects, which occur more frequently when dietary fat intake exceeds recommendations.

Mounjaro's clinical profile is markedly different. The SURMOUNT-1 trial enrolled 2,539 adults with obesity and demonstrated dose-dependent weight loss: participants on the 15mg maintenance dose lost an average of 20.9% of their initial body weight over 72 weeks, compared to 3.1% in the placebo group [2]. More than half of participants on the highest dose achieved at least 20% weight reduction—a threshold rarely seen with oral weight loss medications [2][3].

Head-to-head comparisons don't exist between these two treatments, but indirect evidence suggests tirzepatide produces significantly greater absolute weight loss. However, clinical suitability depends on factors beyond efficacy alone: your BMI, comorbidities, previous treatment response, injection tolerance, and budget all influence which option a UK prescriber may recommend after your consultation.

Real-World Effectiveness Considerations

Clinical trial results represent ideal conditions with close monitoring and dietary support. In real-world UK pharmacy practice, Orlistat's effectiveness depends heavily on patient adherence to a low-fat diet—many discontinue treatment due to gastrointestinal side effects when dietary fat isn't adequately controlled [1]. Mounjaro's once-weekly dosing and appetite-suppressing effects may improve long-term adherence, though injection anxiety and gastrointestinal side effects (nausea, vomiting, diarrhoea) remain common, particularly during dose escalation [2][3].

Side Effects and Tolerability Profile

Orlistat's side effects are directly related to its mechanism: oily stools, faecal urgency, flatulence with discharge, and oily spotting occur in up to 30% of users, especially when dietary fat intake exceeds 30% of total calories [1]. These effects are manageable with dietary modification but can be socially inconvenient. Orlistat also reduces absorption of fat-soluble vitamins (A, D, E, K), so supplementation taken at least two hours apart from Orlistat doses is often recommended [1]. Rare cases of severe liver injury have been reported, though causality remains uncertain.

Mounjaro's most common side effects are gastrointestinal: nausea (30-40% of users), diarrhoea, vomiting, constipation, and abdominal discomfort, particularly during the first 8-12 weeks of treatment [2][3]. These effects typically diminish as your body adapts to the medication. More serious but rare risks include pancreatitis, gallbladder disease, and thyroid C-cell tumours (observed in rodent studies but not confirmed in humans) [2]. Mounjaro carries a boxed warning about thyroid tumours and is contraindicated in patients with a personal or family history of medullary thyroid carcinoma or Multiple Endocrine Neoplasia syndrome type 2.

Injection-site reactions (redness, itching, bruising) occur in approximately 5% of Mounjaro users but are generally mild [3]. Hypoglycaemia risk is low when Mounjaro is used alone for weight management, but increases if you're taking other glucose-lowering medications. Your UK prescriber will review your full medical history and current medications during consultation to identify any contraindications or interaction risks.

Feature Orlistat Mounjaro (Tirzepatide)
Mechanism Lipase inhibitor (blocks fat absorption) Dual GIP/GLP-1 receptor agonist
Administration Oral capsule, three times daily Subcutaneous injection, once weekly
Average Weight Loss 5-10% over 12 months 15-22.5% over 72 weeks
Starting Price From £124.99 From £124.99
Common Side Effects Oily stools, faecal urgency, flatulence Nausea, vomiting, diarrhoea
Dietary Requirements Low-fat diet essential No specific diet required
Suitable BMI Range 28+ (with comorbidities) or 30+ 27+ (with comorbidities) or 30+

Orlistat vs Mounjaro UK Comparison: Dosing and Administration

Orlistat requires three doses daily—one 120mg capsule taken immediately before, during, or up to one hour after each main meal containing fat. If you skip a meal or eat a fat-free meal, you omit that dose. This regimen demands organisation and consistent meal timing, which some patients find challenging in busy UK lifestyles. The lower-dose Alli formulation (60mg) follows the same schedule but with reduced fat-blocking potency.

Mounjaro follows a structured dose-escalation protocol to minimise gastrointestinal side effects. Treatment begins at 2.5mg injected subcutaneously once weekly for four weeks, then increases to 5mg weekly. Your prescriber may continue escalating the dose every four weeks (7.5mg, 10mg, 12.5mg, up to a maximum of 15mg weekly) based on your weight loss response and tolerability [2][3]. Each pre-filled KwikPen contains four doses, and you inject into your abdomen, thigh, or upper arm on the same day each week. The injection takes seconds and uses a fine needle similar to insulin pens.

From a convenience standpoint, Mounjaro's once-weekly schedule may suit patients who struggle with multiple daily doses, whilst Orlistat's oral format appeals to those uncomfortable with self-injection. Both treatments require long-term commitment—weight regain commonly occurs after discontinuation if lifestyle changes aren't maintained.

Treatment Duration and Long-Term Use

Orlistat is typically prescribed for up to 12 months initially, with continuation beyond that period reserved for patients who've lost at least 5% of their initial body weight [1]. NICE guidance suggests discontinuing Orlistat if you haven't achieved this threshold within 12 weeks. Mounjaro trials extended to 72 weeks, and many patients continue treatment longer under prescriber supervision, particularly if they have obesity-related comorbidities like type 2 diabetes or hypertension [2]. Your UK prescriber will schedule regular reviews to assess efficacy, tolerability, and whether ongoing treatment remains clinically appropriate.

Cost and Accessibility at UK Pharmacies

Orlistat remains one of the most affordable prescription weight loss treatments in the UK, with generic versions available from £135.00 at Cured Pharmacy. Branded Xenical typically costs more, whilst the over-the-counter Alli 60mg formulation sits between generic and branded prescription pricing. The lower cost makes Orlistat accessible to a broader patient population, though the need for three daily doses means monthly supply costs accumulate.

Mounjaro represents a higher investment, with pricing starting from £124.99 at Cured Pharmacy depending on your prescribed dose. Higher maintenance doses (10mg, 12.5mg, 15mg) cost more per pen. Whilst this places Mounjaro at a premium compared to Orlistat, many patients find the greater weight loss efficacy and once-weekly convenience justify the cost difference. Some UK patients may qualify for NHS prescription of tirzepatide if they meet specific BMI and comorbidity criteria, though availability varies by local integrated care board.

At Cured Pharmacy, all pricing is transparent and displayed before you complete your free online consultation. There are no hidden fees, and our UK prescribers base their recommendations on clinical suitability rather than cost—they'll discuss both options if you're eligible for either treatment. We guarantee the lowest prices in the UK, and all medicines are genuine UK-licensed products dispensed by our GPhC-registered pharmacy team led by Superintendent Pharmacist Tarun Kumar (GPhC 2233073).

Insurance and NHS Availability

Private health insurance policies vary in their coverage of weight loss medications—some cover prescription treatments like Orlistat or Mounjaro if prescribed for obesity-related health conditions, whilst others exclude weight management entirely. Check your policy documents or contact your insurer directly. NHS prescription eligibility for Mounjaro is currently limited and subject to local formulary decisions, whilst Orlistat may be prescribed on the NHS for patients with a BMI of 30 or above (or 28 with comorbidities) who've demonstrated commitment to diet and exercise [1].

Which Treatment Is Right for You?

Orlistat may be more suitable if you prefer an oral medication, have a lower BMI (28-35), are comfortable with dietary fat restriction, and want a lower-cost option. It's particularly appropriate for patients who've had success with calorie-controlled diets in the past but need additional support to reduce fat intake. Orlistat works best when you're motivated to make concurrent dietary changes, as the medication itself provides relatively modest weight loss without behaviour modification [1].

Mounjaro tends to be recommended for patients with higher BMIs (30 and above, or 27 with weight-related comorbidities), those who've tried other weight loss treatments without adequate response, or individuals who struggle with appetite control and portion sizes. The substantial weight loss seen in clinical trials makes Mounjaro particularly valuable for patients with obesity-related conditions like type 2 diabetes, hypertension, or sleep apnoea where greater weight reduction produces meaningful health improvements [2][3].

Your UK prescriber will assess your medical history, current medications, weight loss goals, previous treatment attempts, and any contraindications during your free online consultation. Both Orlistat and Mounjaro require prescription authorisation in the UK—no legitimate pharmacy can supply these medications without a valid prescription from a UK-registered prescriber. At Cured Pharmacy, our clinical team completes assessments within hours, and we dispatch medications the same day when prescriptions are approved before our cut-off time, with discreet packaging to protect your privacy.

Scientific References

  1. Rucker, D., Padwal, R., Li, S. K., Curioni, C., & Lau, D. C. (2007). Long term pharmacotherapy for obesity and overweight: updated meta-analysis. BMJ, 335(7631), 1194–1199. https://doi.org/10.1136/bmj.39385.413113.25 [accessed 13 August 2026]
  2. Jastreboff, A. M., Aronne, L. J., Ahmad, N. N., Wharton, S., Connery, L., Alves, B., ... & Garvey, W. T. (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]
  3. Frias, J. P., Davies, M. J., Rosenstock, J., Pérez Manghi, F. C., Fernández Landó, L., Bergman, B. K., ... & 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 [accessed 13 August 2026]
  4. NHS. (2026). Tirzepatide: a medicine to manage type 2 diabetes and treat obesity. https://www.nhs.uk/medicines/tirzepatide/ Accessed 13 August 2026.
  5. NHS. (2026). Overweight and obesity in adults. https://www.nhs.uk/conditions/overweight-and-obesity/ Accessed 13 August 2026.
  6. 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 factors.

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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

Can I take Orlistat and Mounjaro together?
Combining Orlistat and Mounjaro is not standard practice and should only be considered under specialist supervision. Your UK prescriber will recommend one treatment based on your clinical profile, and combining medications increases side effect risks without clear evidence of additional benefit.
How quickly will I see results with Orlistat vs Mounjaro?
Orlistat users typically notice effects within 1-2 weeks if adhering to a low-fat diet, with gradual weight loss over months. Mounjaro produces more substantial weight loss but may take 8-12 weeks to reach therapeutic doses, with peak effects often seen after 6-12 months of treatment.
Do I need a prescription for Orlistat or Mounjaro in the UK?
Yes, both medications require a prescription from a UK-registered prescriber. Orlistat 120mg (Xenical) and Mounjaro are prescription-only medicines, though a lower-dose Orlistat 60mg (Alli) is available over the counter in UK pharmacies for adults with BMI 28 or above.
What happens if I stop taking Orlistat or Mounjaro?
Weight regain is common after discontinuing either treatment if dietary and lifestyle changes aren't maintained. Mounjaro should be tapered under prescriber guidance rather than stopped abruptly, whilst Orlistat can be discontinued without a tapering schedule.
Are Orlistat and Mounjaro available on the NHS?
Orlistat may be prescribed on the NHS for eligible patients with BMI 30+ (or 28+ with comorbidities) who've demonstrated commitment to diet and exercise. Mounjaro availability on the NHS is currently limited and varies by local integrated care board—most patients access it privately.
Which is safer: Orlistat or Mounjaro?
Both medications have established safety profiles when used appropriately under prescriber supervision. Orlistat's side effects are primarily gastrointestinal and manageable with dietary modification, whilst Mounjaro carries different risks including pancreatitis and thyroid concerns. Your UK prescriber will assess which is safer for your individual medical history.
Can I switch from Orlistat to Mounjaro or vice versa?
Yes, switching between treatments is possible under prescriber guidance. Many patients try Orlistat first due to lower cost, then transition to Mounjaro if weight loss is insufficient. Your UK prescriber will manage the transition and ensure there's no overlap that could increase side effect risks.
How long do I need to take Orlistat or Mounjaro for weight loss?
Treatment duration varies individually. Orlistat is typically prescribed for up to 12 months initially, with continuation based on achieving at least 5% weight loss. Mounjaro trials extended to 72 weeks, and many patients continue longer under prescriber supervision, particularly if they have obesity-related comorbidities.
Which is more effective for weight loss - Orlistat or Mounjaro?
Mounjaro is clinically shown to produce significantly greater weight loss than Orlistat, with patients losing up to 20% body weight compared to Orlistat's 5-10%. Cured Pharmacy offers expert consultations to help you choose the right treatment for your weight loss goals.
Is Mounjaro cheaper than Orlistat in the UK long-term?
While Orlistat has a lower upfront cost, Mounjaro often proves more cost-effective due to faster results and less frequent dosing adjustments. Cured Pharmacy offers Mounjaro from £124.99 with £20 off your first order using code Weightlossnew, making it accessible for UK patients.
Can I switch from Orlistat to Mounjaro with Cured Pharmacy?
Yes, many patients successfully switch from Orlistat to Mounjaro for better results. Cured Pharmacy's UK-registered prescribers will review your medical history and current treatment during your online consultation to ensure a safe transition between medications.
Does Mounjaro require dietary restrictions like Orlistat does?
Unlike Orlistat which requires a low-fat diet to avoid unpleasant side effects, Mounjaro works differently and doesn't mandate strict fat restriction. Cured Pharmacy provides comprehensive guidance on how to optimise your weight loss with Mounjaro through balanced nutrition without Orlistat's dietary limitations.
How do Orlistat and Mounjaro compare for UK NHS availability?
Both medications have limited NHS availability with strict eligibility criteria and long waiting times. Cured Pharmacy offers private access to Mounjaro from £124.99 with fast UK delivery, allowing you to start treatment quickly without NHS delays for either Orlistat or Mounjaro.
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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