Mounjaro Weight Loss Cheapest in the UK (October 2026)

01 · Price

What does Mounjaro cost in the UK right now?

Across the UK pharmacies we track, the cheapest Mounjaro pen is £143.96 per month and the dearest is £319.99 per month, covering all six doses. That range is from our own price index, last checked 25 October 2026. It is a spread across doses and providers, not a single starting price.

For the 2.5mg starting pen, the providers we track charge between £143.96 and £179.99. For the same dose, the gap between the cheapest and dearest provider is anywhere from £20 to £36.03. So the first rule of finding the lowest price is to compare like for like: the same strength, the same four-week pen, and the same inclusions.

At EverydayMeds, the standard price of the Mounjaro pen is £169.99 at 2.5mg and £189.99 at 5mg, rising to £299.99 at 15mg. Each price is for one pen, which is four weeks of weekly doses. Your first 2.5mg pen costs £129.99 with code FIRST40. If you are switching to us at 15mg, your first order is £259.99. Both are first-order prices, so the new-customer discount is already inside them. After that, an automatic £25 reorder discount applies to every future order (code DOSE25). All six doses are in stock.

02 · Inclusions

What should a low price include?

A low price should include a proper consultation, a prescriber review, genuine stock and safe delivery. Where a headline price leaves any of these out, the saving can disappear. When comparing, check these points:

Saturday delivery is available for £14.99 if you need it; standard next-day delivery is free. Payment is taken when you place the order; if the prescriber decides the treatment is not suitable, the order is refunded automatically in full.

03 · Saving

How can I pay less without cutting corners?

The honest answer is to use the discounts that exist, not to change how the pen is used. New customers save £40 on their first order with code FIRST40, at any dose. Every later order is £25 off the standard price. The current Mounjaro discount code details are shown live, so you never need to hunt for vouchers on third-party sites.

If you want to compare other routes first, our guide to the cheapest GLP-1 for weight loss sets the options side by side. When you are ready, you can start your free consultation with no charge and no obligation.

04 · Checking a seller is genuine

How do I know a low price is from a genuine seller?

Check the pharmacy on the GPhC register before paying, and treat any seller offering Mounjaro without a consultation or prescription as unsafe. The MHRA has seized thousands of fake weight-loss pens in the UK and has issued alerts after falsified Mounjaro pens were identified.⁷ Fake pens have caused hospitalisations, and some contained insulin rather than tirzepatide.⁷ That is why a surprisingly low price deserves a second look rather than a click.

Only buy from a pharmacy you can verify on the GPhC register, never from social media, beauty salons or unverified websites.¹² Genuine treatment always involves a prescription and a clinical consultation. EverydayMeds is a GPhC-registered pharmacy, registration 9012878, and you can look us up on the GPhC register entry yourself.

Genuine UK stock is manufactured by Eli Lilly and supplied through Lilly's official distribution to licensed pharmacies, and every pen carries a batch number and expiry date that can be checked.¹³ Our supply comes direct from Eli Lilly's UK distribution through LillyDirect, and all six doses from 2.5mg to 15mg are stocked.

When your pen arrives, a quick check protects you. A genuine UK Mounjaro pen comes from a registered pharmacy with a batch number and expiry date, arrives cold-chain packaged, and the solution inside is clear and colourless.¹³ Do not use a pen that has been frozen, looks cloudy or discoloured, has particles in it, is past its expiry, or has been above 30°C or in use for more than 30 days.¹³ If supply or packaging ever seems wrong, check the pharmacy on the GPhC register and contact the pharmacy before injecting.

A short list of red flags helps. Be wary if there is no consultation or health questionnaire, if there is no prescriber review, if the seller is on social media or in a salon, if the price is far below what registered pharmacies charge, or if the pharmacy name cannot be found on the register. Any one of these is enough reason to walk away. A saving of a few pounds a month is never worth the risk of an unverified pen.

If you have already received something that seems wrong, do not inject it. Contact the seller if you can, and report suspect medicines and side effects through the MHRA Yellow Card scheme.⁷

05 · Planning a year of cost

What does a year of Mounjaro cost?

A first year costs £2,399.88 if you stay on 5mg after your 2.5mg starting pen, up to £3,279.88 if you step up through every dose to 15mg, at standard prices before any discount. A year is 52 weeks, which is 13 four-week pens. A new customer's first order is £40 less, and every later order is £25 less, so your real total will be lower than these standard-price figures.

The first four pens are 2.5mg, 5mg, 7.5mg and 10mg if you step up after 4 weeks on each dose, and at standard prices they cost £879.96. Not everyone moves up every step, and your prescriber decides each change at your monthly review. Once you settle on a dose, cost is simply the monthly price of that dose.

The weekly equivalent can help with budgeting. At standard prices a 2.5mg pen works out at £42.50 a week, 5mg at £47.50, 7.5mg at £61.25, 10mg at £68.75, 12.5mg at £72.50 and 15mg at £75.00. Seeing the weekly figure makes it easier to compare with other regular spending, and to see how each step up in dose changes the picture.

Two points are easy to miss. The year figures only exist for settling at 5mg or 15mg; for other maintenance doses, use that dose's monthly price rather than assuming a year total. And you do not need to plan every pen now. There is no subscription, repeat orders re-check suitability, and nothing ships automatically, so you can stop when you and your prescriber decide to. If you prefer to spread the cost, Klarna and pay-monthly options are available. Our guide on the Mounjaro weight loss curve explains how the timeline of treatment typically looks, which helps when you are estimating how long you may need to budget for.

Many people treat the first few pens as a review period: take the starting pen, see how you respond at the monthly review, and decide on the next step with your prescriber.

06 · Lowering cost safely

What are the safe ways to lower the cost?

These are the routes that keep the treatment safe. Everything else that circulates online as a money saver is unlicensed.

Start with discounts. New customers save £40 on their first order at any dose with code FIRST40, and an automatic £25 reorder discount applies to every future order (code DOSE25). The price shown is the price paid, with a free consultation and free standard delivery.

What not to do matters just as much. Use the pen as designed, then dispose of it. Needles, a sharps bin and injection guidance come with every order.

Other medicines can be a cost question as well. Wegovy uses a different ladder, with pens of 0.25mg, 0.5mg, 1mg, 1.7mg and 2.4mg once weekly, stepping up after at least four weeks to the 2.4mg maintenance dose from week 17. Liraglutide, by contrast, is a daily injection supplied at 6mg per millilitre. Which suits you is a prescriber decision, not a price decision alone.

Over-the-counter products can look cheaper. Low-cost supplements and tablets are available without assessment, but they carry no clinical oversight and are not equivalent to a prescribed medicine. Our guide to alli weight loss pricing shows what that route offers and where it differs.

07 · Eligibility and who can be prescribed

Who can be prescribed Mounjaro for weight loss?

Mounjaro is licensed for weight management in adults with a BMI of 30 or above, or a BMI between 27 and 30 with at least one weight-related condition.¹ Those conditions include high blood pressure, high cholesterol, obstructive sleep apnoea, cardiovascular disease, prediabetes or type 2 diabetes.¹ It must be used alongside a reduced-calorie diet and increased physical activity.¹

This matters for cost because a low price does nothing for you if the medicine is not suitable. A prescriber will assess your BMI, medical history and current medicines before deciding whether Mounjaro is suitable for you.¹¹ That assessment is a real clinical review by a GPhC-registered prescriber, not a scoring script. If it is judged unsuitable, the order is refunded automatically in full and you pay nothing.

Mounjaro is a prescription-only medicine, supplied only after an online consultation reviewed by a GPhC-registered prescriber. It is used alongside a reduced-calorie diet and increased physical activity. Individual results vary, and this page is information, not a substitute for medical advice.

The consultation itself is free, with no obligation. It is a short health questionnaire, followed by a prescriber review. Payment is taken when you place the order; if the prescriber decides the treatment is not suitable, the order is refunded automatically in full. Because repeat orders re-check suitability, your situation is looked at again each time rather than renewed automatically, which also helps if your weight, health or medicines change.

If you are not sure whether you qualify, the quickest route is to complete the free consultation and let the prescriber decide. The aim is for the person to be prescribed safely, not for the sale to go through at any cost.

It is also worth being clear about what the eligibility criteria are not. They are not a promise that treatment will work for you, and they are not a reason to take a medicine you do not need. If you are under the BMI thresholds, or if you have a medical condition or a medicine that interacts, the prescriber may suggest another option or decline the order. That is the system doing its job.

08 · NHS versus private

Is the NHS a cheaper route than going private?

Access to Mounjaro on the NHS is being phased in over several years. Mounjaro is available on the NHS, and NICE recommends it for adults with a BMI of at least 35 plus at least one weight-related condition.⁴ The NHS primary-care rollout began in June 2025 with the highest-need groups first, initially BMI 40+ with four or more qualifying conditions.⁶ Full rollout is expected to take years.⁶

For many people the question is not NHS or private, but whether they qualify yet. In England, an NHS prescription normally carries the £9.90 prescription charge per item, although many people are exempt, and your GP or the NHS weight-management service can tell you whether you are eligible and where you sit in the rollout. If you are in a group that is being prioritised, ask your GP first.

Because the phasing runs across years, many people who meet the licensed criteria choose regulated private treatment rather than waiting. That is a personal choice. Neither route is better in itself; they suit different people at different times. A private prescription is faster to start, and the cost depends on the dose you reach and how long you stay on treatment.

It also helps to know that the two are not mutually exclusive over time. Someone might begin privately and move to NHS care later, or the reverse, and your prescriber can provide records of your treatment. Ask your GP about NHS options either way.

NHS access to Wegovy runs through specialist weight-management services; ask your GP. If you are weighing the NHS alongside private options, the full list of weight loss treatments shows what we supply. Whichever route you choose, the same safety rules apply: a prescription, a consultation, and a verifiable pharmacy.

09 · What results to expect

What results can I expect for the money?

In the SURMOUNT-1 trial of 2,539 adults, people taking tirzepatide alongside diet and exercise lost on average 15% of their body weight on 5mg, 19.5% on 10mg and 20.9% on 15mg over 72 weeks, compared with 3.1% with lifestyle changes alone.² These are trial averages: individual results vary, and treatment works alongside a reduced-calorie diet and increased physical activity, not instead of them.²

Beyond the averages, the trial reported how many people reached set thresholds. At 72 weeks, 85% of participants on 5mg, 89% on 10mg and 91% on 15mg had lost at least 5% of their body weight.² Half of participants on 10mg and 57% on 15mg lost at least 20% of their body weight.²

To make a percentage concrete, a worked example helps. For someone starting at 100 kg, 20.9% is about 21 kg, and 15% is about 15 kg. That is straight arithmetic on the trial averages, not a prediction for you. Trial averages do not predict your own result, and nobody can promise one.

Whether you need to move up is a decision for you and your prescriber, based on how you respond, how you tolerate the medicine and your health goals.

Remember also that treatment is part of a plan. A reduced-calorie diet and increased physical activity are part of the licensed use, not optional extras.¹

The GLPTrackr companion app is free for iOS and Android and helps you keep track of doses, measurements and notes, which is useful to bring to your monthly review.

10 · How Mounjaro works and stopping

How does Mounjaro work, and what happens if I stop?

Mounjaro is the brand name for tirzepatide, a once-weekly injectable prescription medicine made by Eli Lilly. In the UK it is licensed for weight management in adults and for type 2 diabetes.¹ It comes as a pre-filled multi-dose pen (KwikPen) in six strengths: 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg and 15mg.¹

Tirzepatide is the first treatment of its kind to activate two natural gut-hormone receptors at once: GIP and GLP-1.² Together these help regulate appetite, slow how quickly the stomach empties, and improve the way the body responds to insulin.² In practice, most people feel fuller sooner and less hungry between meals, which supports a reduced-calorie diet. This dual action is what distinguishes Mounjaro from single-action GLP-1 medicines such as semaglutide (Wegovy/Ozempic).

The contraception point is worth knowing before you order. Because the medicine slows stomach emptying, it can reduce how well oral contraceptive pills are absorbed. The SmPC advises switching to a non-oral method, or adding a barrier method (such as condoms), for 4 weeks after starting Mounjaro and for 4 weeks after each dose increase.¹ If you take insulin or sulfonylureas, doses may need adjusting because of the risk of low blood sugar; your prescriber will advise.

On stopping, tirzepatide has a half-life of about five days, so after a final dose it takes roughly 4–5 weeks to clear the system. There is no way to speed this up, and nothing needs doing while it clears.¹

Seek immediate medical help for severe, persistent stomach pain that may spread to your back, with or without vomiting (possible pancreatitis); pain in the upper right abdomen, fever or yellowing of skin or eyes (possible gallbladder problems); or signs of a severe allergic reaction such as swelling of the face or throat and difficulty breathing. For any other side effect, tell your prescriber, and you can report it through the MHRA Yellow Card scheme. Side-effect support is part of the monthly review service. For storage, keep pens in the fridge until first use; once in use, a pen can be kept out of the fridge at a temperature not above 30°C for up to 30 days after first use, and must then be thrown away. Unopened pens keep until the printed expiry date. If you are unsure, check the patient information leaflet and ask the pharmacy.

11 · How ordering works

How do I order Mounjaro from EverydayMeds?

Ordering takes three steps: a free online consultation, a prescriber review, then dispensing and delivery. Payment is taken when you place the order and refunded automatically in full if the prescriber decides the treatment is not suitable, and the consultation carries no obligation.

Step one is the free consultation, a short health questionnaire. It takes a few minutes, costs nothing and commits you to nothing, so it is a low-risk way to find out whether Mounjaro is suitable before you think about price. You can start your free consultation at any time.

Step two is the prescriber review. A GPhC-registered prescriber looks at your answers and decides whether the medicine is suitable and at which dose. Payment is taken when you place the order; if the prescriber decides the treatment is not suitable, the order is refunded automatically in full. If you are approved, the prescriber will recommend a starting dose, which is normally the 2.5mg pen, and your first order is £40 less with code FIRST40.

Step three is dispensing and delivery. Your pen is dispensed by our registered pharmacy and dispatched the same day when ordered by 3pm. Delivery is free, next day, tracked via DPD, in discreet temperature-controlled packaging. Saturday delivery is £14.99. Needles, a sharps bin and injection guidance come with every order, and you can view the Mounjaro pen prices and consultation page for the live dose list.

After your first pen, the aftercare begins: ongoing monthly reviews, dose titration and follow-up assessments by the prescribing team, plus side-effect support. Every repeat order re-checks your suitability, and nothing is shipped automatically. Every later order is £25 off the standard price (code DOSE25).

Support is available Monday to Friday, 9am to 5pm, by email at support@everydaymeds.co.uk, through the account portal chat, or by phone on 0333 207 0413. Payment can be by Visa or Mastercard, Klarna, or pay-monthly options, and there are no subscriptions.

Refunds work as follows: declined consultations are refunded automatically in full. Dispensed prescription medicines cannot be returned except where an item is faulty, damaged or wrong, in which case contact us within 3 days. Refunds take 5 to 10 working days. We have supported over 100,000 customers on their weight loss journey, which describes how many people we have served, not how well treatment works for any one person.