Mounjaro Price Increase UK: What Changed, Why, and What It Costs Now (November 2026)

01 · Prices now

What Mounjaro costs now, after the increase

These are our live prices for each dose, checked on 11 November 2026. Each pen holds four weekly doses, so the pen price is your monthly cost.¹¹

New customers get £40 off the first order with code FIRST40, at any dose. Repeat orders are £25 off with code DOSE25, and Subscribe & Save takes £40 off every order on injections. You can start a free consultation here.

02 · How to order

How ordering works

Complete the free online consultation, a GPhC-registered prescriber reviews it and decides whether Mounjaro is suitable and at which dose, and our pharmacy sends your pen with free next-day tracked delivery. If it is not suitable, your order is refunded automatically in full.

Mounjaro (tirzepatide) 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 more physical activity. Individual results vary. This page is information, not a substitute for medical advice.

03 · What happened

What happened to the price of Mounjaro?

Eli Lilly announced a UK list-price increase for Mounjaro on 14 August 2025, effective 1 September 2025.¹ List prices rose from £92–£122 per month to £133–£330 per month depending on dose, an increase of up to 170% on the highest dose.

The list price is what the manufacturer charges before any discounts. Pharmacies buy at or around that price and then set their own selling price, so when the list price rose, private prices rose across the whole UK market. Because the rise was biggest on the higher strengths, people on 10mg, 12.5mg or 15mg saw the largest jumps.

04 · The change by dose

How much the list price rose for each dose

The NHS Drug Tariff, which sets what the NHS pays pharmacies, was updated to reflect the new list prices from September 2025.²

These are list prices per pen, not what any one pharmacy charges. Before the change, the low and high doses cost similar amounts. After it, the gap between the starting dose and the top doses became much wider, which is why stepping up now has a bigger effect on your monthly cost.

05 · Why prices went up

Why did Eli Lilly raise the price of Mounjaro in the UK?

Lilly said the change was to bring UK prices more into line with other developed countries, where Mounjaro had been priced much higher.¹ The UK had been one of the cheapest places in the world to buy it, and the announcement came amid wider pressure in the United States over what other countries pay for medicines.

Whatever the reasons, the effect for private patients in the UK was the same: higher prices from every pharmacy, with the largest increases at the doses that people reach after a few months of treatment.

06 · NHS vs private patients

Did the price increase affect NHS patients?

NHS patients were largely protected. The NHS buys at negotiated prices, so people prescribed Mounjaro on the NHS kept paying the standard prescription charge in England, or nothing in Scotland, Wales and Northern Ireland.

The catch is that NHS access is limited. NICE recommends Mounjaro 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.³⁴ Most people using Mounjaro for weight loss are private patients, and they are the ones who felt the increase.

07 · If you were already on Mounjaro

What the increase means if you were already on Mounjaro

If you started Mounjaro before September 2025, you may have seen your monthly cost rise sharply, especially if you were on a higher dose. Many people reviewed their options at that point. The main ones are:

• Stay on your current dose for longer. If it is still working, there may be no need to step up, which keeps the cost lower. Your prescriber decides.
• Compare providers. Across the UK pharmacies we track, the gap between providers for the same dose runs from £27 to £40.03. Switching pharmacy does not mean restarting at 2.5mg.
• Use ongoing discounts. Repeat discounts and subscriptions save money every month, not just once.
• Consider Wegovy. It is usually cheaper, especially at higher doses, although it gave less weight loss on average in the head-to-head trial.⁵ A prescriber can advise whether switching makes sense.

What not to do is buy cheap pens from unregistered sellers. The MHRA has seized thousands of fake weight-loss pens in the UK, and some contained insulin rather than tirzepatide.⁶

08 · Keeping costs down

How to keep the cost of Mounjaro down

1. Compare the ongoing price, not the first pen. A low first-order price lasts a month. Work out what six months will cost at the doses you expect to be on.
2. Use the repeat discount or Subscribe & Save. With us, repeat orders are £25 off, or £40 off every order with Subscribe & Save on injections.
3. Buy bundles once you are settled on a dose. Two or three pens in one order lower the price per pen. See Mounjaro bundles.
4. Spread the cost if it helps. Klarna and Clearpay let you pay in instalments.
5. Do not step up for the sake of it. In the SURMOUNT-1 trial, people lost on average 15% of body weight on 5mg and 19.5% on 10mg over 72 weeks.⁷ If a lower dose is working for you, staying on it is a sensible, cheaper choice.

Our Mounjaro price comparison shows how prices compare across the UK.

09 · Will prices go down?

Will Mounjaro prices go down?

Nobody can say for certain. Prices are set by the manufacturer and by each pharmacy, and they can change at any time. A few things are worth knowing:

• Competition between UK pharmacies is strong, and many run offers that bring the real price below the standard price.
• New treatments have arrived. Two GLP-1 weight-loss tablets are now licensed in the UK: Wegovy tablets, approved by the MHRA in June 2026, and Foundayo, approved in August 2026.⁸⁹ More choice can put pressure on prices over time.
• NHS access is widening gradually, which may change how many people buy privately.

Because we show live prices, the table on this page always reflects what Mounjaro costs today.

10 · Is it still worth it?

Is Mounjaro still worth the higher price?

That is a personal decision, but the evidence on what Mounjaro does has not changed. 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.⁷

It also helps to plan for the long term. Weight tends to return after stopping. In SURMOUNT-4, people who stopped tirzepatide after 36 weeks regained on average 14% of body weight over the following year.¹⁰ If cost would force you to stop suddenly, it may be better to choose a dose or medicine you can afford to stay on. Our page on Mounjaro vs Wegovy compares the two on results and cost.