GLP-1 Therapies Cost Comparison UK (October 2026)

01 · Costs

What GLP-1 therapies cost in the UK

The licensed GLP-1 weight-loss injections are Mounjaro (tirzepatide) and Wegovy (semaglutide 2.4mg), and their monthly costs differ by dose. At EverydayMeds the Mounjaro pen costs £169.99 at 2.5mg, £218.99 at 5mg, £279.99 at 7.5mg, £290.99 at 10mg, £319.99 at 12.5mg and £329.99 at 15mg. Each pen covers four weekly doses, and all six doses are in stock.

These are standard prices. A new customer gets £40 off their first order at any dose with code FIRST40, including people switching to us at a higher dose. An automatic £25 reorder discount then applies to every future order (code DOSE25). So your first 2.5mg pen costs £129.99 with code FIRST40, and switching at 15mg means your first order is £289.99.

The Wegovy pen follows the same logic: your first pen costs £99.99. Wegovy steps up through 0.25mg, 0.5mg, 1mg, 1.7mg and 2.4mg, four weeks each, reaching the 2.4mg maintenance dose from week 17.

02 · Side by side

GLP-1 options compared on cost

Monthly price alone is a poor guide. The medicines differ in effect, dosing frequency and how many months you may need them, so cost per month and cost per outcome are not the same thing.

03 · Value

Cost against results: what the trials show

In SURMOUNT-5, the first large head-to-head trial, adults on tirzepatide lost on average 20.2% of body weight over 72 weeks versus 13.7% on semaglutide 2.4mg.¹⁵ Both are effective, licensed treatments, and which suits you depends on your health profile, tolerance and prescriber advice, not the headline number alone.¹⁵ For someone starting at 100 kg, 20.2% is about 20 kg and 13.7% is about 14 kg. These are trial averages and individual results vary.

Monthly price therefore tells only part of the story. Your prescriber can help you weigh it, and our Ozempic, Mounjaro and Wegovy cost comparison goes into the detail.

04 · Mounjaro across UK pharmacies

Mounjaro prices across the UK pharmacies we track

Mounjaro prices vary widely between providers, even for the same pen. In EverydayMeds' own index of the UK pharmacies we track (checked 11 October 2026), Mounjaro pens cost between £143.96 and £339.00 per month across all doses and providers. The 2.5mg starting pen alone ranges from £143.96 to £179.99.

For any single dose, the gap between the lowest and highest provider runs from £27 to £41. Boots' Mounjaro dose prices run from £179.00 to £339.00 per month.

Part of the reason for the spread is the manufacturer's pricing. Eli Lilly raised the UK list price of Mounjaro from 1 September 2025.¹⁰ Pharmacy sell prices differ because of confidential discounts. For a deeper breakdown, see our Mounjaro UK cost comparison.

05 · Comparing providers fairly

How to compare providers like for like

To compare providers fairly, match the dose first, then check what is included. A low headline price on 2.5mg tells you little about the cost of 10mg later, so look at the whole price ladder. Our GLP-1 price comparison for the UK lays this out dose by dose.

• Same dose and same product: genuine Mounjaro KwikPens, not compounded copies or unlicensed products.
• Fees: the price shown should be the price paid. Our consultation is free and there are no hidden fees.
• Delivery: we offer free next-day tracked delivery in temperature-controlled packaging; Saturday delivery is £14.99.
• Reviews: check whether monthly clinical reviews are included. Ours are.
• Payment flexibility: we accept Visa, Mastercard and Klarna, with pay-monthly options and no subscriptions.
• Registration: confirm the pharmacy on the GPhC register (ours is 9012878).¹²

Our supply is official LillyDirect supply, sourced directly from Eli Lilly's UK distribution. Price-comparison sites can be a useful starting point, but always check the dose, the date of the price and the registration of the pharmacy behind each listing.

06 · Year-cost planning

Planning a year of treatment

A first year of Mounjaro costs £2,711.88 if you stay on 5mg after your 2.5mg starting pen, up to £3,599.88 if you step up through every dose to 15mg. These totals cover 52 weeks, or 13 pens, at standard prices and before discounts. A new customer's first order is £40 less, and every later order is £25 less.

If you step up after 4 weeks on each dose, your first four pens (2.5mg to 10mg) cost £959.96 at standard prices. If you settle at another maintenance dose, work from the monthly price: £279.99 at 7.5mg, £290.99 at 10mg or £319.99 at 12.5mg.

Not everyone needs the top dose. Your prescriber chooses a dose based on how you respond and tolerate treatment. Our cost comparison of GLP-1 drugs shows how different maintenance doses add up over time. You can also spread payments with Klarna or pay-monthly options, with no subscription lock-in.

07 · NHS versus private

NHS access versus private treatment

Mounjaro is available on the NHS, but access is being phased in over several years. NICE recommends it for adults with a BMI of at least 35 plus at least one weight-related condition, and the NHS primary-care rollout began in June 2025 with the highest-need groups first, initially BMI 40+ with four or more qualifying conditions.⁴⁶ Full rollout is expected to take years, which is why many people who meet the licensed criteria choose regulated private treatment rather than waiting.

NHS access to Wegovy runs through specialist weight-management services; ask your GP. If you meet the NHS criteria, ask your GP about your place in the rollout. If you do not, or prefer not to wait, private prescribing is the alternative.

Privately, Mounjaro is licensed for adults with a BMI of 30 or above, or between 27 and 30 with at least one weight-related condition such as high blood pressure, high cholesterol, obstructive sleep apnoea, cardiovascular disease, prediabetes or type 2 diabetes. It is used alongside a reduced-calorie diet and increased physical activity, and a prescriber assesses suitability first.¹

08 · Cheaper alternatives

Cheaper alternatives to Mounjaro

There are licensed alternatives to Mounjaro, but none is a like-for-like substitute. There is no tablet form of Mounjaro; tirzepatide is injection-only in the UK.¹ Two GLP-1 weight-loss tablets are now licensed: Wegovy tablets (oral semaglutide), approved by the MHRA in June 2026, and Foundayo (orforglipron), approved in August 2026.²⁰²¹ They are different medicines with their own dosing, eligibility checks and trial results, and both are prescription-only.

Orlistat blocks some dietary fat absorption and produces smaller average losses. Wegovy and Saxenda (liraglutide) are other licensed injectables; liraglutide is a daily injection supplied at 6mg per millilitre, unlike once-weekly Mounjaro and Wegovy.

Compare current tablet and injection prices on our weight loss treatments page, and use our GLP-1 therapies guide to understand how each class works. A free consultation will tell you which licensed option fits your health profile.

09 · Supplements and false savings

Shortcuts that are not savings

"Natural GLP-1" supplements such as berberine, sometimes called the "poor man's Ozempic", are not medicines, are not regulated for this use and have no comparable trial evidence. They are low-cost supplements with no clinical oversight, and dosing is not standardised. Their lower price reflects that gap, not an equivalent product.

Each KwikPen is designed and licensed to deliver exactly four weekly doses. Use the pen as designed, then dispose of it.

Finally, beware prices that look too good. The MHRA has seized thousands of fake weight-loss pens in the UK and has issued alerts after falsified Mounjaro pens were identified. Fake pens have caused hospitalisations, and some contained insulin rather than tirzepatide.⁷ 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.

10 · Serious side effects

Serious side effects: when to get help straight away

Serious side effects are uncommon but need urgent attention. 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/eyes (possible gallbladder problems); or signs of a severe allergic reaction such as swelling of the face or throat and difficulty breathing. If you take insulin or a sulfonylurea alongside Mounjaro, watch for low blood sugar (shakiness, sweating, confusion) — your prescriber may need to adjust those medicines.¹

11 · How ordering works

How ordering works with us

Ordering takes three steps, and the price shown is the price paid. Mounjaro (tirzepatide) is a prescription-only medicine, supplied only after an online consultation reviewed by a GPhC-registered prescriber. Individual results vary, and this page is information, not a substitute for medical advice.

• Free online consultation: a short health questionnaire with no charge and no obligation. Start your free consultation.
• Prescriber review: a GPhC-registered prescriber reviews your answers. Payment is taken when you place the order; if the prescriber decides the treatment is not suitable, the order is refunded automatically in full.
• Dispatch and delivery: our registered pharmacy dispenses your order, with same-day dispatch when ordered by 3pm and free next-day tracked delivery in discreet, temperature-controlled packaging.

Needles, a sharps bin and injection guidance come with every order. Repeat orders re-check suitability, with no auto-shipping, and the GLPTrackr companion app is free. New customers save £40 on their first order with code FIRST40; see our Mounjaro discount code page for how the discounts work. We serve over 100,000 customers, and support is available Monday to Friday, 9am to 5pm, on 0333 207 0413.