Mounjaro (tirzepatide) has become one of the most talked about prescription weight management treatments in the UK, and it is also one of the most confusing when it comes to pricing.
Through a GPhC registered UK pharmacy, prices typically start from £129.99 for a 2.5mg starter pen and go up to £278.99 for a 15mg maintenance pen. Many providers also offer bundle options for people continuing treatment.
This Mounjaro price comparison UK guide explains the cost of each dose, compares pricing, and highlights what to look for when choosing a provider. It is worth looking beyond the headline pen price to see what is included, such as clinical assessments, delivery, bundles, and ongoing support.
If you are considering prescription treatment for chronic weight management, this guide also explains who may be eligible for Mounjaro, how it works, how ordering through a regulated online pharmacy works, NHS availability, and what to check before buying Mounjaro online.
Treatment suitability always depends on an individual clinical assessment. This information is provided for general guidance only and does not replace advice from a qualified prescriber.
What Is Mounjaro Weight Loss Injection and How Does It Work?
Mounjaro is the brand name for tirzepatide, the active ingredient in this prescription only medicine. It works by targeting two naturally occurring gut hormone receptors, GLP 1 and GIP (glucose dependent insulinotropic polypeptide).
This dual action may:
- Help reduce appetite and food cravings.
- Slow gastric emptying, which may help you feel fuller for longer after eating.
- Help support healthy blood glucose regulation.
- Support weight management when used alongside a reduced calorie diet and increased physical activity.
In the UK, Mounjaro is licensed for chronic weight management in eligible adults, alongside a reduced calorie diet and increased physical activity. It is given as a once weekly injection using a prefilled KwikPen.
Each Mounjaro KwikPen contains four weekly doses, providing a 28 day supply when used as prescribed.
Treatment usually starts with the 2.5mg dose. If needed, your prescriber may increase your dose over time in line with the product licence and your individual clinical response. Any dose changes should always be made by a qualified prescriber following an assessment.
Mounjaro should only be used under the supervision of an appropriately qualified prescriber, who will decide whether the treatment is suitable for you and whether any changes to your dose are appropriate.
Who Is Mounjaro For?
According to NICE Technology Appraisal TA1026, Mounjaro may be considered as a treatment option for eligible adults living with overweight or obesity, alongside a reduced calorie diet and increased physical activity.
NICE guidance generally refers to adults with a BMI of 35 kg/m² or above. Lower BMI thresholds may apply for people from South Asian, Chinese, other Asian, Middle Eastern, Black African, or African Caribbean backgrounds. In these groups, the threshold is typically 2.5 kg/m² lower, reflecting evidence that weight related health risks can occur at lower BMI levels.
Who may be eligible for Mounjaro?
Following a clinical assessment, you may be considered for treatment if you:
- Have a BMI that meets the current prescribing criteria, subject to an individual clinical assessment.
- Have a weight related health condition, such as high blood pressure, where appropriate.
- Have not achieved sufficient results through diet and lifestyle changes alone.
- Are willing to combine treatment with ongoing healthy lifestyle changes, including a balanced diet and regular physical activity.
Your prescriber will always make the final decision on whether Mounjaro is suitable for you.
Who should speak to a prescriber before starting Mounjaro?
It is important to speak to a prescriber before considering Mounjaro if you:
- Are pregnant, trying to become pregnant, or breastfeeding, as Mounjaro is not suitable during pregnancy or while breastfeeding.
- Have a personal or family history of certain thyroid cancers or related genetic syndromes.
- Have certain pancreatic or digestive conditions, including severe gastrointestinal disease.
- Are under 18 years of age.
Everyone responds to treatment differently, so results will vary from person to person. Your prescriber will assess your medical history, current health, and treatment goals to determine whether Mounjaro is an appropriate option for you. The best results are typically seen when treatment is combined with healthy lifestyle changes and ongoing support.
Current Mounjaro Price List UK (2026)
Prices below reflect a GPhC-registered UK pharmacy's live pricing. Prices update periodically and the figures shown at checkout, after your consultation, always take precedence over any figure shown elsewhere on a website.
Single Pen Pricing
| Dose | First Order Price | Returning Customer Price |
|---|---|---|
| 2.5mg (starter) | £129.99 | £144.99 |
| 5mg | £159.99 | — |
| 7.5mg | £209.99 | — |
| 10mg | £229.99 | — |
| 12.5mg | £259.99 | — |
| 15mg | £278.99 | — |
Each single pen covers a 4-week supply (4 weekly doses per pen), with 2.5mg used as the first dose when starting treatment. Higher-strength pens are generally priced higher than starter-strength pens. Prices offered by other providers may vary over time , while our live price is shown above.
Bundle Options
| Bundle | Contents | Duration | First Order Price |
|---|---|---|---|
| Intro Duo | 2.5mg + 5mg pens | 8 weeks | £299.99 |
| Progress Duo | 5mg + 7.5mg pens | 8 weeks | £369.99 |
| Intro Trio | 2.5mg + 5mg + 7.5mg pens | 12 weeks | £534.99 |
Bundles can be a convenient option for people continuing their weight management treatment, but they should always be prescribed following a clinical assessment. Your prescriber will confirm which pen strengths are appropriate for your treatment plan before approving a bundle.
When comparing bundle options, it is worth looking beyond the number of pens included. The overall value may also depend on what is included with your treatment, such as clinical assessments, follow up support, and delivery.
A note on discounts: New patient and returning customer discount codes are applied at checkout. If you see different discount amounts advertised on different pages, the final price shown at checkout is the most accurate. It is always a good idea to review the total cost before completing your order.
How Mounjaro pricing works and why it varies
You may notice that Mounjaro prices vary between UK pharmacies. This is usually due to a few key factors:
Wholesale costs The cost of Mounjaro can change over time as wholesale prices change. Some pharmacies absorb these increases, while others pass them on to customers, which is why prices can differ between providers.
What is included in the price Some providers charge only for the medication, while others include the online consultation, independent prescriber review, prescription, and delivery in the advertised price. Before placing an order, check whether the quoted price is the total amount you will pay or whether additional charges apply.
Commercial agreements Some pharmacies have commercial agreements that allow them to offer more competitive pricing. This can also contribute to differences in the prices you see.
Level of service The price may also reflect the overall service provided. Specialist online pharmacies and high street pharmacies have different operating costs, and some providers include additional services such as clinical support, follow up care, and regulated prescribing.
Mounjaro price comparison UK: How pricing compares across providers
Mounjaro prices vary across UK providers, so it is always worth comparing the total cost before ordering. Publicly listed prices from other providers have ranged from around £176.97 for a 2.5mg pen to approximately £334.97 for a 15mg maintenance pen, although these prices can change over time.
Other UK providers, including Dr Fox and Well Pharmacy, also supply Mounjaro. As prices are updated regularly, it is best to check each provider's website for their latest pricing and any current offers.
Some clinical studies have found that tirzepatide produced greater average weight loss than semaglutide under study conditions. However, individual results vary and treatment decisions should always be made with a qualified prescriber.
Across the UK, most legitimate providers currently charge somewhere between £120 and £350 per month, depending on the prescribed dose and what is included in the service. If you come across prices that seem unusually low, it is worth checking that the provider is regulated and that the price includes everything you need, such as the clinical assessment, prescription, and delivery.
When comparing providers, it is helpful to look at the overall value of the service rather than choosing based on price alone. Factors such as clinical support, transparent pricing, delivery, and ongoing care can all make a difference to your treatment experience.
Things to know before you buy
Before ordering Mounjaro, it is worth checking a few important details:
- Confirm whether the consultation, prescription, and delivery are included in the advertised price.
- Check whether the price is for a single pen or an entire treatment programme.
- Ask what happens if your prescriber decides your dose needs to change after your review.
- Only buy Mounjaro from a regulated UK pharmacy that requires a clinical assessment. Mounjaro is a prescription only medicine and cannot legally be supplied without approval from a qualified prescriber. There is currently no generic version of Mounjaro available in the UK.
- If you are planning to continue treatment, check what support is available if your dose changes, you have questions during treatment, or you miss a delivery.
NHS access vs private prescription
Mounjaro is available through both the NHS and private providers, but NHS access is currently being introduced in phases.
From 23 March 2025, prescribing began through specialist weight management services for people with the highest clinical need. This initially included people with a BMI of 40 or above (adjusted for ethnicity where appropriate) and at least four qualifying weight related health conditions.
From April 2026, some GP practices have also been able to prescribe tirzepatide under updated primary care guidance. However, participation is not mandatory for every practice, and availability still varies depending on where you live. In some areas, access is managed through local prescribing hubs before wider GP availability.
If Mounjaro is prescribed through the NHS in England, the standard prescription charge applies unless you qualify for an exemption.
For many people who do not currently meet the NHS eligibility criteria, or who live in areas where the service is not yet widely available, a private prescription from a regulated UK pharmacy may be the most practical way to access treatment.
Clinical evidence: What the research shows
The effectiveness of Mounjaro has been studied in the SURMOUNT clinical trial programme.
One of the largest studies, SURMOUNT 1, followed 2,539 adults living with obesity or overweight, without type 2 diabetes, over 72 weeks. On average, participants taking tirzepatide experienced weight reductions of:
- 16.0% with the 5mg dose.
- 21.4% with the 10mg dose.
- 22.5% with the 15mg dose.
By comparison, participants receiving a placebo experienced an average weight reduction of 2.4%. Around 91% of participants taking Mounjaro lost at least 5% of their starting body weight during the study.
A later study, SURMOUNT 5, found that tirzepatide produced greater average weight loss than semaglutide over 72 weeks in adults without type 2 diabetes. While these results are encouraging, they are average outcomes from clinical trials and should not be viewed as a guarantee of individual results. Everyone responds differently to treatment.
Compliance note: Any clinical statistics shared with patients should be checked against the latest Summary of Product Characteristics (SmPC) and reviewed by your clinical team before publication, as evidence and prescribing information may be updated over time.
Obesity continues to be a major public health challenge in the UK. According to NHS England data published in 2024, 30% of adults aged 16 and over were living with obesity, while 66% were either overweight or living with obesity. This helps explain the growing interest in prescription weight management treatments such as Mounjaro.
Ordering process: What to expect
Getting started with Mounjaro is straightforward, but every order is subject to a clinical assessment to make sure the treatment is appropriate for you.
Complete your online consultation You will be asked about your medical history, current medications, and weight management goals. The consultation usually takes just a few minutes to complete.
Clinical assessment A UK qualified prescriber will review your consultation, typically within three working days. Some providers may also offer an express review option for eligible orders. This assessment helps ensure that Mounjaro is suitable for you and supports your ongoing weight management plan.
Dispatch and delivery If your prescription is approved, your medication will be dispensed by a GPhC registered UK pharmacy. Delivery usually takes one to two working days after dispatch, and your order will arrive in discreet packaging for added privacy.
Delivery, storage, and temperature controlled handling
Mounjaro should be stored and transported correctly to help maintain its quality.
Reputable pharmacies deliver Mounjaro in insulated, temperature controlled packaging. Once your medication arrives, store it in the refrigerator unless your Patient Information Leaflet advises that it can be kept at room temperature for a limited period.
When using Mounjaro, follow your prescriber's instructions and rotate your injection site between the abdomen, thigh, and upper arm to help reduce irritation. Always follow the storage and usage instructions provided with your specific pen, as they may differ from other GLP 1 medications.
Why choose a GPhC registered pharmacy?
Buying Mounjaro from a GPhC registered, MHRA regulated UK pharmacy helps ensure that your medication is genuine and sourced through licensed UK wholesalers. It also means the medication has been stored and transported using the correct temperature controlled process before it reaches you.
A regulated pharmacy will always require a clinical assessment before prescribing Mounjaro. This helps make sure the treatment is appropriate for you and gives you access to qualified healthcare professionals throughout your treatment, not just when you place your order.
Like all prescription medicines, Mounjaro can cause side effects. Common side effects may include nausea, diarrhoea, vomiting, and reactions at the injection site, such as redness or swelling. More serious side effects, including pancreatitis and gallbladder related conditions, have also been reported, although these are less common. Always read the Patient Information Leaflet for full safety information and speak to your prescriber or pharmacist if you have any concerns.
If you miss a dose, follow the advice in your Patient Information Leaflet and any guidance provided by your prescriber.
Choosing a regulated pharmacy also helps reduce the risk of receiving counterfeit or unlicensed medicines and ensures you have access to ongoing clinical support throughout your treatment.
If you are exploring options beyond Mounjaro injections, it's worth knowing that prescription weight loss treatments now include an oral route too. Oral weight-management treatment options may be available for some patients for patients who prefer not to inject, and our Wegovy Pill prescription guide explains the eligibility and prescribing process for that route in detail. Your prescriber will help determine which treatment format is appropriate for you, since suitability depends on individual clinical assessment rather than personal preference alone.
