Mounjaro Ingredients UK: What's Inside | Cured Pharmacy

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Cheapest Mounjaro Ingredients UK Price £124.99

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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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Understanding Mounjaro Ingredients and Alternative Options

Published on: June 03, 2026

Understanding mounjaro ingredients UK prescription options helps you make informed decisions about weight loss treatment. Mounjaro contains tirzepatide as its active ingredient, the first dual GIP/GLP-1 receptor agonist licensed by the MHRA for chronic weight management in the UK. At Cured Pharmacy, our UK-registered clinical team can assess your suitability for Mounjaro or alternative treatments from £124.99 with transparent pricing and discreet delivery.

What Are the Active Ingredients in Mounjaro?

Mounjaro's sole active ingredient is tirzepatide, a synthetic peptide comprising 39 amino acids with a molecular weight of approximately 4,813 Daltons [1]. Each pre-filled KwikPen contains tirzepatide in one of five dose strengths: 2.5mg, 5mg, 7.5mg, 10mg, or 12.5mg per 0.5ml injection. The medication is supplied as a clear, colourless to slightly yellow solution ready for subcutaneous administration.

Tirzepatide works by mimicking two naturally occurring incretin hormones: glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1). This dual mechanism distinguishes it from single-pathway alternatives like semaglutide (Wegovy) or liraglutide (Saxenda), which target only GLP-1 receptors [1]. In the SURMOUNT-1 trial, patients receiving the highest tirzepatide dose achieved an average body weight reduction of 22.5% over 72 weeks, compared to 2.4% with placebo [2].

The inactive ingredients in Mounjaro include sodium chloride (4.1mg), sodium phosphate dibasic heptahydrate (0.7mg), and water for injections. These excipients maintain the solution's stability, isotonicity, and pH balance, ensuring the active tirzepatide remains effective throughout the product's shelf life when stored correctly between 2°C and 8°C.

How Tirzepatide Ingredients Compare to Semaglutide and Liraglutide

While all three medications belong to the incretin mimetic class, their molecular structures and receptor activity profiles differ significantly. Semaglutide (found in Wegovy) is a modified GLP-1 analogue with 94% structural similarity to human GLP-1, featuring an albumin-binding fatty acid side chain that extends its half-life to approximately one week [3]. Liraglutide (Saxenda) shares 97% homology with native human GLP-1 but requires daily dosing due to its shorter half-life of 13 hours.

Tirzepatide's unique structure includes both GIP and GLP-1 receptor agonist properties, achieved through a C20 fatty diacid chain attached to a modified GIP sequence. This dual action produces greater insulin secretion, enhanced satiety signalling, and improved metabolic outcomes compared to GLP-1-only therapies [1]. The GIP component specifically enhances fat metabolism and may reduce the gastrointestinal side effects commonly associated with GLP-1 receptor agonists.

Clinical head-to-head comparisons demonstrate tirzepatide's superior weight loss efficacy. In the SURPASS-2 trial, patients on 15mg tirzepatide weekly lost an average of 12.4kg compared to 6.2kg with 1mg semaglutide weekly over 40 weeks [4]. However, individual response varies, and your UK prescriber will consider your medical history, tolerance profile, and treatment goals when recommending the most suitable option.

Molecular Stability and Storage Requirements

All three injectable incretin therapies require refrigerated storage before first use, but their stability profiles differ. Mounjaro pens must remain refrigerated at 2-8°C until the expiry date printed on the label. Once in use, the pen may be stored at room temperature (up to 30°C) for up to 21 days, providing flexibility for patients who travel or prefer not to inject cold medication. Wegovy follows similar storage guidance, whilst Saxenda permits 30 days of room temperature storage after first use. These requirements reflect each medication's formulation chemistry and preservative systems designed to maintain peptide integrity.

Inactive Ingredients and Their Role in Mounjaro Formulation

The excipients in Mounjaro serve critical pharmaceutical functions beyond simply carrying the active tirzepatide. Sodium chloride (4.1mg per dose) adjusts the solution's osmolarity to match body fluids, reducing injection site discomfort and improving subcutaneous absorption. Sodium phosphate dibasic heptahydrate acts as a buffering agent, maintaining the solution's pH between 7.0 and 8.0 to prevent peptide degradation and ensure consistent bioavailability.

Water for injections meets European Pharmacopoeia standards, ensuring the absence of pyrogens, endotoxins, and particulate matter that could trigger immune responses or injection site reactions. The formulation contains no preservatives, which is why each Mounjaro pen is single-patient use only and must be discarded 21 days after first use, even if doses remain.

Patients with sodium-restricted diets should note that each Mounjaro injection contains less than 1mmol sodium (23mg), making it essentially sodium-free for dietary purposes. The formulation contains no latex in the pen device, reducing allergy concerns for sensitive individuals. All ingredients are of non-animal origin, suitable for patients following vegetarian or vegan lifestyles, subject to their prescriber's clinical approval.

Allergen Information and Contraindications

Mounjaro does not contain common allergens such as egg proteins, soya derivatives, or gluten-containing compounds. However, patients with a documented hypersensitivity to tirzepatide or any excipient should not use this medication. Your UK prescriber will review your allergy history during the online consultation to identify any contraindications before prescribing treatment.

Treatment Active Ingredient Mechanism Dosing Frequency Starting Price
Mounjaro Tirzepatide Dual GIP/GLP-1 agonist Once weekly injection From £124.99
Wegovy Semaglutide GLP-1 receptor agonist Once weekly injection From £69.00
Saxenda Liraglutide GLP-1 receptor agonist Daily injection From £68.00
Orlistat Orlistat Lipase inhibitor Three times daily capsule From £32.00
Xenical Orlistat 120mg Lipase inhibitor Three times daily capsule From £32.00
Alli Orlistat 60mg Lipase inhibitor Three times daily capsule From £32.00
Wegovy Oral Semaglutide + SNAC GLP-1 receptor agonist Once daily tablet From £69.00

Alternative Weight Loss Medication Ingredients Available in the UK

Beyond GLP-1 and dual incretin therapies, UK patients have access to mechanistically different weight loss treatments with distinct active ingredients. Orlistat (available as generic, Xenical, Alli, or Orlos brands) works through gastrointestinal lipase inhibition rather than hormonal pathways. Each capsule contains either 120mg (prescription strength) or 60mg (pharmacy supply) of orlistat, which blocks approximately 25-30% of dietary fat absorption in the intestines [5].

Orlistat's inactive ingredients vary by manufacturer but typically include microcrystalline cellulose, sodium starch glycolate, and gelatin capsule shells. Unlike injectable treatments, orlistat requires three times daily dosing with meals and produces different side effects related to unabsorbed fat excretion. Clinical trials show average weight loss of 2.9kg more than placebo over one year when combined with a reduced-calorie diet [5].

For patients unsuitable for injectable therapies or preferring oral medication, the newly available Wegovy oral tablets (semaglutide pill) offer a prescription alternative containing the same active ingredient as Wegovy injections but formulated with absorption enhancer SNAC (sodium N-[8-(2-hydroxybenzoyl) amino] caprylate) to enable gastrointestinal uptake of the peptide. This represents a significant pharmaceutical innovation, as peptides typically degrade in stomach acid.

Choosing Between Mounjaro Ingredients and Alternative Formulations

Your choice between tirzepatide, semaglutide, liraglutide, or orlistat depends on multiple clinical factors beyond ingredient comparison alone. Patients with a history of pancreatitis, medullary thyroid carcinoma, or multiple endocrine neoplasia syndrome type 2 cannot use incretin-based therapies due to contraindications identified in preclinical studies [1][3]. Those with gallbladder disease may experience increased risk with rapid weight loss from any medication.

Injection frequency preferences matter: Saxenda requires daily administration, whilst Mounjaro and Wegovy offer once-weekly convenience. Patients with needle phobia may prefer Orlistat capsules or the forthcoming oral semaglutide option, though these have different efficacy profiles. Gastrointestinal tolerance varies significantly between individuals—some patients find orlistat's fat-related side effects more challenging than the nausea occasionally associated with GLP-1 therapies.

Cost considerations also influence treatment selection. At Cured Pharmacy, Mounjaro starts from £124.99 reflecting the medication's advanced dual-action formulation and superior clinical outcomes in trials. Alternative options begin at lower price points, with Orlistat available from £135.00 and Saxenda from £135.00 though all require ongoing monthly supply for sustained weight management. Your UK prescriber will discuss the most cost-effective option that meets your clinical needs during the free online consultation.

Personalised Treatment Assessment Process

Our UK-registered clinical team, led by Superintendent Pharmacist Tarun Kumar (GPhC 2233073), conducts comprehensive online assessments typically completed in under three minutes. The consultation reviews your medical history, current medications, weight loss goals, and any contraindications to specific active ingredients. This ensures you receive the safest, most effective treatment for your individual circumstances, with transparent pricing confirmed before any prescription is issued.

Understanding Mounjaro Ingredient Safety and Side Effect Profile

The most commonly reported side effects of tirzepatide relate to its GLP-1 receptor activity affecting the gastrointestinal system. In the SURMOUNT-1 trial, nausea occurred in 31-34% of patients (compared to 9% with placebo), diarrhoea in 20-23%, and vomiting in 10-12%, with most cases being mild to moderate and diminishing over time [2]. These effects result from delayed gastric emptying—a therapeutic mechanism that contributes to increased satiety and reduced caloric intake.

Serious but rare adverse events include pancreatitis (reported in 0.2% of tirzepatide patients across trials), gallbladder disorders, and acute kidney injury secondary to dehydration from gastrointestinal symptoms [1]. The MHRA requires all GLP-1 and dual incretin therapies to carry warnings about thyroid C-cell tumours based on rodent studies, though no causal relationship has been established in humans. Patients should report persistent severe abdominal pain, visual changes, or signs of allergic reaction immediately to their prescriber.

Compared to orlistat's side effect profile—which centres on oily stools, faecal urgency, and fat-soluble vitamin deficiency—tirzepatide's adverse events reflect its systemic hormonal mechanism rather than local gastrointestinal action. Neither medication class is suitable during pregnancy or breastfeeding, and effective contraception is recommended for women of childbearing potential due to unknown effects on foetal development. Your UK prescriber will monitor your response through follow-up consultations and adjust treatment if side effects become problematic.

Long-Term Safety Data and Ongoing Monitoring

Post-marketing surveillance continues to monitor tirzepatide's long-term safety profile as real-world use expands beyond clinical trial populations. Current data from the SURMOUNT trials extend to 72 weeks, with ongoing studies investigating cardiovascular outcomes over longer periods [2]. The MHRA and European Medicines Agency maintain pharmacovigilance systems to detect rare adverse events not apparent in pre-approval studies. At Cured Pharmacy, we encourage patients to report any unexpected symptoms through our clinical team, contributing to this essential safety monitoring framework.

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. Garvey, W. T., et al. (2023). Tirzepatide once weekly for the treatment of obesity in people with type 2 diabetes (SURMOUNT-2): a double-blind, randomised, multicentre, placebo-controlled, phase 3 trial. The Lancet, 402(10402), 613–626. https://doi.org/10.1016/S0140-6736(23)01200-X [accessed 13 August 2026]
  3. 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]
  4. Frías, J. P., 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. https://doi.org/10.1016/S0140-6736(21)01324-6 [accessed 13 August 2026]
  5. Torgerson, J. S., et al. (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]
  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. Individual results may vary, and weight loss outcomes depend on multiple factors including adherence to treatment and lifestyle modifications.

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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

What is the main active ingredient in Mounjaro?
Mounjaro contains tirzepatide as its sole active ingredient, a dual GIP/GLP-1 receptor agonist supplied in doses ranging from 2.5mg to 12.5mg per weekly injection. The formulation includes sodium chloride, sodium phosphate, and water for injections as inactive ingredients.
How do mounjaro ingredients UK prescription options differ from Wegovy?
Mounjaro contains tirzepatide (a dual GIP/GLP-1 agonist), whilst Wegovy contains semaglutide (a GLP-1-only agonist). Clinical trials show tirzepatide produces greater average weight loss, though both require UK prescriber approval and weekly injection.
Are there any allergens in Mounjaro ingredients?
Mounjaro contains no common allergens such as egg, soya, gluten, or latex. All ingredients are of non-animal origin, making it suitable for vegetarian and vegan patients subject to clinical approval by a UK prescriber.
What inactive ingredients does Mounjaro contain?
Each Mounjaro injection contains sodium chloride (4.1mg), sodium phosphate dibasic heptahydrate (0.7mg), and water for injections as inactive ingredients. These excipients maintain solution stability, pH balance, and comfortable subcutaneous administration.
Can I get Mounjaro ingredients explained during a UK consultation?
Yes, our UK-registered clinical team provides detailed ingredient information during your free online consultation, which typically takes under three minutes. You can discuss any concerns about active or inactive ingredients before receiving a prescription.
How do Mounjaro ingredients compare to oral weight loss medications?
Mounjaro contains the peptide tirzepatide administered by injection, whilst oral options like Orlistat work through fat absorption blocking in the intestines. The mechanisms, side effect profiles, and efficacy differ significantly—your UK prescriber will recommend the most suitable option.
Are Mounjaro ingredients safe for long-term use?
Clinical trial data support tirzepatide safety for up to 72 weeks, with ongoing studies monitoring longer-term outcomes. The MHRA continues post-marketing surveillance, and regular prescriber follow-ups ensure safe ongoing use for individual patients.
What makes tirzepatide ingredients more effective than other weight loss medications?
Tirzepatide's dual GIP/GLP-1 receptor activity produces greater insulin secretion, enhanced satiety, and improved metabolic effects compared to single-pathway GLP-1 therapies. SURPASS trials demonstrated average weight reductions of 22.5% versus lower percentages with alternatives.
What are the active and inactive ingredients in Mounjaro UK prescriptions?
Mounjaro contains tirzepatide as the active ingredient, with inactive ingredients including sodium chloride, sodium phosphate dibasic heptahydrate, and water for injections. Cured Pharmacy provides full ingredient disclosure with every prescription to ensure patient safety and transparency.
Are Mounjaro ingredients safe for people with allergies or dietary restrictions?
Mounjaro ingredients are suitable for most patients, though those with allergies to tirzepatide or excipients should avoid it. Cured Pharmacy's prescribers review your medical history and allergies during consultation to ensure Mounjaro is safe for you before issuing a prescription.
How do Mounjaro ingredients compare to Wegovy or Saxenda formulations?
Mounjaro's active ingredient tirzepatide works differently from Wegovy's semaglutide or Saxenda's liraglutide, targeting both GIP and GLP-1 receptors. Cured Pharmacy can help you compare formulations and determine which weight loss medication ingredients suit your needs best during your online consultation.
Does the Mounjaro ingredients list change between different dose strengths?
The ingredients in Mounjaro remain consistent across all doses from 2.5mg to 15mg, with only the concentration of tirzepatide changing. Cured Pharmacy supplies all Mounjaro dose strengths with complete ingredient information and UK prescription support at the cheapest prices.
Can I request ingredient certificates or product information for Mounjaro UK prescriptions?
Yes, Cured Pharmacy provides full product information leaflets and ingredient details with every Mounjaro prescription. Our UK-registered pharmacists can also supply additional documentation about Mounjaro ingredients upon request to ensure complete transparency and patient confidence.
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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