Mounjaro vs Wegovy price
A first pen of Mounjaro costs from £88.00 and a first pen of Wegovy from £49.00. This page lines the two up step by step, from the starting dose to the highest, using the cheapest and the typical price at 80 and 76 UK pharmacies.
Prices checked 28 October 2026. A prescriber decides which medicine suits you. This page compares cost only.
Wegovy first pen, cheaper today by
Cheapest prices, delivery included
Price at each step
Both medicines start low and step up one dose at a time. Here is the price of one pen at each step.
| Step | Mounjaro | Cheapest | Typical | Wegovy | Cheapest | Typical |
|---|---|---|---|---|---|---|
| Step 1 | 2.5mg | £88.00 | £133.99 | 0.25mg | £49.00 | £89.00 |
| Step 2 | 5mg | £120.00 | £158.99 | 0.5mg | £63.00 | £96.47 |
| Step 3 | 7.5mg | £168.00 | £208.97 | 1mg | £65.00 | £100.99 |
| Step 4 | 10mg | £188.00 | £236.74 | 1.7mg | £92.00 | £143.96 |
| Step 5 | 12.5mg | £202.00 | £254.99 | 2.4mg | £110.00 | £189.82 |
| Step 6 | 15mg | £219.00 | £272.47 | 7.2mg | £145.00 | £222.47 |
First three months side by side
- £376.00 Mounjaro, cheapest price each month (£501.95 at a typical pharmacy)
- £177.00 Wegovy, cheapest price each month (£286.45 at a typical pharmacy)
- £199.00 difference between the two cheapest totals
Three pens, one at each of the first three steps, at today's first-order prices. Repeat orders often cost more.
Pharmacies that sell both
73 pharmacies list a first pen of both medicines. These are the 10 with the lowest combined starting price.
| Pharmacy | Mounjaro 2.5mg | Wegovy 0.25mg |
|---|---|---|
| Molecule | £96.00 | £56.00 |
| Farmeci | £95.85 | £57.51 |
| My London Pharmacy | £95.85 | £57.51 |
| New Health | £89.00 | £67.00 |
| Zava | £108.99 | £49.00 |
| Medicine Marketplace | £99.00 | £60.00 |
| IQ Doctor | £101.50 | £57.51 |
| Lotus Weight Loss | £109.00 | £54.00 |
| Medicspot | £88.00 | £89.00 |
| Curely | £96.80 | £81.99 |
Mounjaro vs Wegovy price questions
Is Mounjaro or Wegovy cheaper?
For a first pen, Wegovy is cheaper today. Mounjaro 2.5mg starts at £88.00 and Wegovy 0.25mg at £49.00. Over the first three months the cheapest totals are £376.00 for Mounjaro and £177.00 for Wegovy. Prices checked 28 October 2026.
How much does Mounjaro cost per week compared with Wegovy?
One pen of either holds four weekly doses. At the cheapest starting price Mounjaro works out at £22.00 a week and Wegovy at £12.25 a week.
Is Step 3 of Mounjaro the same as Step 3 of Wegovy?
No. The step number only shows how far along the dose plan you are. The two medicines contain different active ingredients, so a Mounjaro dose and a Wegovy dose do not convert into each other.
Can I switch from one to the other to save money?
Only a prescriber can decide that. The MHRA advises speaking to a healthcare professional before changing GLP-1 medicines. If you are prescribed one of them, compare prices for that medicine at your dose.