Mounjaro 2.5mg costs £130.99 more at the dearest UK pharmacy than the cheapest
· based on 29 UK pharmacies
Checked on 6 September 2026, Mounjaro 2.5mg costs between £119.00 and £249.99 depending on which UK pharmacy you use. That is a difference of £130.99 a month for the same medicine at the same strength.
The median price is £160.00, across 29 pharmacies with a price confirmed in the last 7 days.
Multiplying that gap by twelve would overstate it. Most people move up through the doses rather than staying on one, and providers price each strength differently, so the cheapest pharmacy at this strength is often not the cheapest across a full course.
Headline price is not the whole cost either. Pharmacies differ on whether needles, a sharps bin, delivery and the consultation are included, and some charge again for a medical review when your dose changes. Check what a provider includes before treating its price as the lower one.
Figures come from prices MedsLens checked at UK pharmacies within the week to the date above. Prices change often and a pharmacy's own site is always the authority on what it charges today. Nothing here is medical advice.