When Mounjaro (tirzepatide) first launched in the UK in late 2023, prices were eye-watering — some pharmacies charged over £250 per month for the starting 2.5mg dose. Fast forward to 2025 and the picture looks very different. Increased competition between pharmacies, growing prescriber networks, and economies of scale have pushed prices down significantly across the board.
Our data across 63 GPhC-registered UK pharmacies shows that the cheapest 2.5mg Mounjaro dose has fallen from around £249/month at launch to as low as £139/month in early 2026 — a drop of over 44%. The most competitive pharmacies have consistently undercut the market, with several now offering first-order discounts that bring the effective price even lower.
| Dose | Launch Price (2023) | Current Cheapest (2026) | % Drop |
|---|---|---|---|
| 2.5mg | ~£249/month | ~£139/month | −44% |
| 5mg | ~£269/month | ~£149/month | −45% |
| 7.5mg | ~£299/month | ~£169/month | −43% |
| 10mg | ~£329/month | ~£189/month | −43% |
| 12.5mg | ~£349/month | ~£199/month | −43% |
| 15mg | ~£369/month | ~£219/month | −41% |
Prices shown are indicative based on our tracked data. Always verify the current price at checkout, as pharmacy pricing can change daily.
The biggest price reductions have come from online-only pharmacies that operate with lower overheads than high-street chains. Pharmacies like Fella Health, Cloud Pharmacy, and Bolt Pharmacy have consistently been among the cheapest, often undercutting high-street names like Boots and Lloyds by 20–30%. Several newer entrants — including Farmeci and Curely — have also launched with aggressive introductory pricing.
- Increased competition — over 60 GPhC-registered pharmacies now offer Mounjaro, up from fewer than 20 at launch
- Economies of scale — higher prescription volumes allow pharmacies to negotiate better wholesale prices from Eli Lilly
- Prescriber network growth — more UK prescribers means lower consultation fees per patient
- Market maturity — as the product becomes established, pharmacies compete harder on price to win customers
- Discount codes — many pharmacies now offer first-order discount codes of 10–50% to attract new patients