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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 Weight Loss Injections (Tirzepatide) KwikPen - UK-licensed prescription Treatment
Treatment

Mounjaro Weight Loss Injections (Tirzepatide) KwikPen

From £145.00

Future orders save 5%
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Wegovy (Semaglutide) Weight Loss Injection - UK-licensed prescription Treatment
Treatment

Wegovy (Semaglutide) Weight Loss Injection

From £89.00

Future orders save 5%
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Saxenda - UK-licensed prescription Treatment
Treatment

Saxenda

From £68.00

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Orlistat - UK-licensed prescription Treatment
Treatment

Orlistat

From £32.00

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Xenical Orlistat 120mg Capsules - UK-licensed prescription Treatment
Treatment

Xenical Orlistat 120mg Capsules

From £49.99

Future orders save 5%
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Alli Weight Loss Capsules 60mg - UK-licensed prescription Treatment
Treatment

Alli Weight Loss Capsules 60mg

From £49.99

Future orders save 5%
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Weight Loss Treatments Available Online in the UK

Published on: June 03, 2026

When you buy weight loss treatments online UK, choosing a registered pharmacy ensures you receive genuine, MHRA-licensed medications with proper clinical oversight. At Cured Pharmacy (GPhC 9012511), our superintendent pharmacist Tarun Kumar and UK-registered clinical team provide free consultations, transparent upfront pricing, and discreet delivery across the UK.

How Modern Weight Loss Medications Work

The latest generation of weight loss treatments approved by the MHRA work through sophisticated hormonal pathways that regulate appetite and metabolism. GLP-1 receptor agonists like semaglutide and liraglutide mimic natural incretin hormones, slowing gastric emptying and reducing hunger signals to the brain [1]. These medications help patients feel fuller for longer, making it easier to maintain a calorie deficit without constant hunger.

Tirzepatide represents an advancement as the first dual GIP/GLP-1 receptor agonist licensed in the UK [2]. By activating both glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptors, it produces greater weight reduction than single-pathway treatments. In the SURMOUNT-1 trial, participants achieved an average weight loss of 22.5% over 72 weeks at the highest dose — the most substantial results seen in obesity pharmacotherapy to date [2].

Fat absorption inhibitors like orlistat work through an entirely different mechanism, blocking approximately 25% of dietary fat from being absorbed in the intestines [3]. This approach suits patients who prefer a non-hormonal option or cannot tolerate injectable medications, though it requires adherence to a reduced-fat diet to minimise gastrointestinal side effects.

Mounjaro (Tirzepatide): Clinical Evidence and UK Availability

Mounjaro contains tirzepatide, which received MHRA approval for weight management in adults with a BMI of 30 kg/m² or greater, or 27 kg/m² with weight-related comorbidities [2]. The medication is administered once weekly via a pre-filled KwikPen, with doses gradually escalated from 2.5mg to a maintenance dose determined by your UK prescriber.

Clinical trial data demonstrates exceptional efficacy. In SURMOUNT-3, patients who had already lost weight through lifestyle intervention and then added tirzepatide lost an additional 18.4% of their body weight, compared to just 2.5% in the placebo group [4]. These results represent some of the most significant weight reductions achieved with pharmacotherapy, approaching outcomes previously only seen with bariatric surgery.

At Cured Pharmacy, Mounjaro is available with transparent pricing and includes a comprehensive clinical assessment by UK prescribers. All patients complete a detailed medical questionnaire covering cardiovascular history, previous weight loss attempts, current medications, and contraindications such as personal or family history of medullary thyroid carcinoma or multiple endocrine neoplasia syndrome type 2.

Who Can Take Mounjaro in the UK

UK prescribers assess suitability based on MHRA licensing criteria and NICE guidance. Suitable candidates typically have a BMI of 30 kg/m² or above, or 27 kg/m² with at least one weight-related condition such as type 2 diabetes, hypertension, dyslipidaemia, or obstructive sleep apnoea. Mounjaro is contraindicated in pregnancy, during breastfeeding, and in patients with a history of pancreatitis or severe gastrointestinal disease [2].

Wegovy and Saxenda: Semaglutide and Liraglutide Options

Wegovy contains semaglutide, a GLP-1 receptor agonist administered once weekly. In the STEP 1 trial, participants achieved an average weight loss of 14.9% over 68 weeks, compared to 2.4% with placebo [1]. Wegovy is now available in both injectable and oral tablet formulations in the UK, offering flexibility for patients who prefer not to inject.

Saxenda contains liraglutide, an earlier-generation GLP-1 medication requiring daily subcutaneous injection. While daily administration may seem less convenient than weekly options, some patients prefer the ability to adjust dosing more frequently or appreciate the lower per-injection volume. In the SCALE trial, liraglutide 3.0mg daily produced an average weight loss of 8.0% over 56 weeks versus 2.6% with placebo [5].

Both medications work by reducing appetite and slowing gastric emptying, but differ in their pharmacokinetic profiles. Semaglutide has a longer half-life, allowing once-weekly dosing, whilst liraglutide's shorter duration of action necessitates daily injections. Your UK prescriber will consider your lifestyle, previous treatment responses, and medical history when recommending the most appropriate option.

Choosing Between Injectable Weight Loss Treatments

Selection depends on multiple factors including efficacy goals, injection frequency preference, side effect profile, and cost considerations. Patients seeking maximum weight reduction may benefit from tirzepatide's dual-receptor mechanism, whilst those prioritising established long-term safety data might prefer semaglutide. Daily injections with liraglutide suit individuals who want more frequent dosing control or are new to injectable medications and prefer starting with smaller volumes.

Treatment Active Ingredient Administration Starting Price
Orlos Orlistat 60mg Oral capsule, 3x daily From £32.00
Orlistat Orlistat 120mg Oral capsule, 3x daily From £32.00
Alli Orlistat 60mg Oral capsule, 3x daily From £32.00
Xenical Orlistat 120mg Oral capsule, 3x daily From £32.00
Saxenda Liraglutide 6mg/ml Daily injection From £68.00
Wegovy Oral Tablet Semaglutide Daily tablet (pre-order) From £69.00
Wegovy Injection Semaglutide 2.4mg Weekly injection From £69.00
Mounjaro Tirzepatide Weekly injection From £124.99

Orlistat, Xenical, and Alli: Fat Absorption Inhibitors

Orlistat works by inhibiting gastric and pancreatic lipases, enzymes responsible for breaking down dietary triglycerides in the gastrointestinal tract [3]. By blocking approximately 25% of fat absorption, it creates a modest calorie deficit whilst also encouraging patients to adopt lower-fat eating patterns to avoid gastrointestinal side effects.

The medication is available in two strengths in the UK: 120mg prescription-strength (branded as Xenical or generic orlistat) and 60mg over-the-counter strength (branded as Alli or Orlos). In clinical trials, orlistat 120mg three times daily combined with a reduced-calorie diet produced an average weight loss of 5.8kg compared to 3.0kg with placebo over one year [3].

Orlistat suits patients who prefer a non-systemic medication, have contraindications to GLP-1 treatments, or want a more affordable option for weight management. However, adherence to a diet containing no more than 30% of calories from fat is essential to minimise side effects such as oily stools, faecal urgency, and flatulence with discharge. Taking a multivitamin at bedtime helps prevent deficiencies in fat-soluble vitamins (A, D, E, K).

Starting Treatment: The UK Prescriber Assessment Process

All prescription weight loss medications available through Cured Pharmacy require clinical assessment by a UK-registered prescriber before dispensing. The online consultation takes under three minutes and covers essential medical history including cardiovascular conditions, thyroid disorders, previous weight loss attempts, current medications, and any history of eating disorders or mental health conditions.

UK prescribers evaluate multiple factors when determining suitability: current BMI and weight-related comorbidities, contraindications to specific medication classes, potential drug interactions, previous response to weight loss treatments, and realistic treatment goals. This thorough assessment ensures patient safety and optimises the likelihood of successful outcomes.

Once approved, your prescription is dispensed by our UK-registered pharmacy team under the supervision of superintendent pharmacist Tarun Kumar (GPhC 2233073). Medications are dispatched in 100% discreet packaging with no external markings indicating contents, and most orders are delivered within 2-3 working days across the UK.

Ongoing Clinical Support and Monitoring

Weight loss medication is most effective when combined with lifestyle modifications including dietary changes and increased physical activity. Our clinical team provides ongoing support throughout your treatment journey, with regular check-ins to monitor progress, manage any side effects, and adjust dosing as needed. Patients are encouraged to contact the pharmacy team with any questions or concerns via phone on (+44) 116 4646009.

Pricing Transparency and UK Pharmacy Regulations

At Cured Pharmacy, all prices are displayed upfront before you complete your clinical consultation — no hidden fees or surprise charges. This transparent approach allows you to make informed decisions about your weight loss treatment without uncertainty about final costs.

As a GPhC-registered pharmacy (registration number 9012511), we operate under strict UK regulations governing the sale of prescription medications online. Every prescription is reviewed by a UK-registered prescriber, and all medications are sourced from licensed UK wholesalers, ensuring you receive genuine MHRA-approved treatments. We never supply unlicensed imports or compounded alternatives.

Our lowest price guarantee means you'll find competitive pricing across our entire weight loss range. We regularly review market rates to ensure Cured Pharmacy remains one of the most affordable options for UK patients seeking legitimate, regulated access to prescription weight loss medications with proper clinical oversight.

Scientific References

  1. Wilding, J. P. H., Batterham, R. L., Calanna, S., Davies, M., Van Gaal, L. F., Lingvay, I., ... & 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 [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), 205-218. https://doi.org/10.1056/NEJMoa2206038 [accessed 13 August 2026]
  3. Torgerson, J. S., Hauptman, J., Boldrin, M. N., & Sjöström, L. (2004). XENical in the prevention of diabetes in obese subjects (XENDOS) study: a randomized study of orlistat as an adjunct to lifestyle changes for the prevention of type 2 diabetes in obese patients. Diabetes Care, 27(1), 155-161. https://doi.org/10.2337/diacare.27.1.155 [accessed 13 August 2026]
  4. Aronne, L. J., Sattar, N., Horn, D. B., Bays, H. E., Wharton, S., Lin, W. Y., ... & Jastreboff, A. M. (2024). Continued treatment with tirzepatide for maintenance of weight reduction in adults with obesity: the SURMOUNT-4 randomized clinical trial. JAMA, 331(1), 38-48. https://doi.org/10.1001/jama.2023.24945 [accessed 13 August 2026]
  5. Pi-Sunyer, X., Astrup, A., Fujioka, K., Greenway, F., Halpern, A., Krempf, M., ... & Wilding, J. P. (2015). A randomized, controlled trial of 3.0 mg of liraglutide in weight management. New England Journal of Medicine, 373(1), 11-22. https://doi.org/10.1056/NEJMoa1411892 [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. Never stop or start any medication without consulting your prescriber.

Trusted by thousands

Real people, real results

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

Do I need a prescription to buy weight loss medication online in the UK?
Yes. All prescription weight loss medications including Mounjaro, Wegovy, Saxenda, and prescription-strength orlistat require clinical assessment by a UK-registered prescriber before they can be legally dispensed. At Cured Pharmacy, this consultation is free and takes under three minutes to complete online.
How much weight can I expect to lose with GLP-1 medications?
Clinical trial results vary by medication. Tirzepatide produced an average weight loss of 22.5% over 72 weeks in SURMOUNT-1, semaglutide achieved 14.9% over 68 weeks in STEP 1, and liraglutide resulted in 8.0% weight loss over 56 weeks in SCALE trials. Individual results depend on adherence, lifestyle factors, and starting weight.
Are weight loss injections safe for long-term use?
GLP-1 receptor agonists have been used for over a decade in diabetes management, providing substantial long-term safety data. The most common side effects are gastrointestinal (nausea, diarrhoea, constipation), typically mild to moderate and diminishing over time. UK prescribers monitor patients regularly for any concerns including potential thyroid effects or pancreatitis risk.
What is the difference between Mounjaro and Wegovy?
Mounjaro contains tirzepatide, a dual GIP/GLP-1 receptor agonist, whilst Wegovy contains semaglutide, a single GLP-1 receptor agonist. Tirzepatide produced greater average weight loss in head-to-head comparisons (22.5% vs 14.9%), but both are highly effective MHRA-licensed treatments administered once weekly.
Can I buy Phenergan for weight loss in the UK?
No. Phenergan (promethazine) is an antihistamine used for allergies, motion sickness, and nausea — it is not licensed or clinically indicated for weight loss in the UK. Evidence-based weight loss medications include GLP-1 receptor agonists like tirzepatide and semaglutide, or fat absorption inhibitors like orlistat.
How quickly will I receive my weight loss medication?
Once your prescription is approved by a UK prescriber, medications are typically dispatched within 24 hours and arrive within 2-3 working days across the UK. All orders are sent in 100% discreet packaging with no external indication of contents, ensuring complete privacy.
Do weight loss medications work without diet and exercise?
Medications are most effective when combined with lifestyle modifications including a reduced-calorie diet and increased physical activity. Clinical trials demonstrating significant weight loss included dietary counselling and exercise recommendations. Medications reduce appetite and support adherence to lifestyle changes, but are not a substitute for healthy behaviours.
What happens if I experience side effects from my weight loss medication?
Contact our pharmacy team immediately on (+44) 116 4646009 if you experience severe or concerning side effects. Most GLP-1-related side effects are mild gastrointestinal symptoms that improve over time, but our clinical team can adjust dosing, provide management strategies, or switch you to an alternative treatment if needed.
Can I buy Phenergan online without a prescription in the UK?
Phenergan contains promethazine and is a prescription-only medication in the UK for most uses. At Cured Pharmacy, our prescribers will review your free online consultation to determine if Phenergan is suitable for you before dispensing.
How much does Phenergan cost at Cured Pharmacy?
Phenergan prices at Cured Pharmacy start from £12.99, depending on the quantity and strength prescribed. The price includes your medication, online consultation with a UK prescriber, and discreet delivery to your door.
How quickly can I get Phenergan delivered in the UK?
Once your Phenergan prescription is approved by our UK prescribers, we offer next-day delivery options across the UK. Cured Pharmacy dispatches all orders in discreet, unmarked packaging for your privacy and convenience.
What is Phenergan used to treat?
Phenergan is an antihistamine used to treat allergic reactions, hay fever, nausea and vomiting, and can also be used short-term for sleep disturbances. Our pharmacists at Cured Pharmacy will ensure Phenergan is appropriate for your specific symptoms during the consultation process.
Is Phenergan safe to use alongside other medications?
Phenergan can interact with certain medications including sedatives, antidepressants, and other antihistamines. During your consultation with Cured Pharmacy, you must disclose all medications you're taking so our prescribers can check for potential interactions and ensure your safety.
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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