GLP-1 weight loss medicine prices UK: Mounjaro, Wegovy and Foundayo

Four medicines, one price index

Four GLP-1 medicines are licensed for weight management in the UK. Mounjaro is tirzepatide, a weekly injection pen in six strengths from 2.5 mg to 15 mg. Wegovy is semaglutide as a weekly injection, from 0.25 mg to 7.2 mg. The Wegovy pill is semaglutide as a daily tablet, licensed by the MHRA on 11 June 2026 in four strengths from 1.5 mg to 25 mg. Foundayo is orforglipron, a daily tablet from Eli Lilly licensed on 10 August 2026 in six strengths from 0.8 mg to 17.2 mg.

All four are prescription only. A prescriber at a registered pharmacy has to assess you before any supply, and each product's licence sets a BMI threshold of 30, or 27 with a weight-related condition. This site does not sell, prescribe or dispense any of them and gives no medical advice.

Where the prices come from

Every price on these pages comes from GLP Index, a live index of UK pharmacies on the General Pharmaceutical Council register. The site pulls a fresh export every day. The latest, dated 21 October 2026, covers 80 pharmacies for Mounjaro, 72 for the Wegovy injection, 56 for the Wegovy pill and 32 for Foundayo. Each recorded price is the full amount a patient pays for a four-week supply, with the prescriber consultation and standard delivery inside the figure. The index records a first order price for new customers and an ongoing price for returning customers, because the two often differ.

After the first order, the cheapest ongoing price at the starting dose is £105.00 for Mounjaro, £74.00 for Wegovy, £84.55 for the Wegovy pill and £79.99 for Foundayo. At the top dose of each medicine it is £234.00, £199.88, £102.99 and £139.95. At Mounjaro 15 mg the median ongoing price is £299.99, so the pharmacy you choose changes the monthly bill by £65.99 at the same dose.

What the guides cover

The four price pages show the full table by dose with the cheapest, median and highest figure, and explain what the price includes, how to check the pharmacy on the GPhC register, and the licence and NHS position for each medicine.

The savings guides work out in pounds what you save by moving pharmacy, why a pay-monthly arrangement costs less than a 3, 6 or 12 month plan, and how to budget for the ongoing price once the first order offer has gone. One guide sets out who can get Mounjaro and Wegovy on the NHS in 2026, where a prescription costs £9.90 per item in England and nothing in Scotland, Wales or Northern Ireland. Another compares Mounjaro and Wegovy on cost alone. A consumer protection guide covers fake pens, MHRA warnings and the Yellow Card scheme. A yearly cost calculator totals 12 months at any dose.

The Wegovy pill and Foundayo are not available on the NHS. Private health insurance is unlikely to cover any of the four.