The 15mg pen is the highest available Mounjaro dose. Clinical trials showed an average 20.9% body weight loss at this level. Not everyone needs to reach 15mg — your prescriber will determine the optimal dose for you.

The average price for Mounjaro 15mg across 71 UK pharmacies is £306.84. Medicine Marketplace charges £271.00, which is 12% below the market average.

Frequently asked questions

How much does Mounjaro 15mg cost at Medicine Marketplace?

Mounjaro 15mg at Medicine Marketplace costs £271.00 per 4-week supply as of March 2026.

Is Medicine Marketplace the cheapest for Mounjaro 15mg?

Medicine Marketplace is ranked #5 out of 71 pharmacies for Mounjaro 15mg. The cheapest is £204.99 at Pharmacy Planet.

Does Medicine Marketplace include consultation and delivery for Mounjaro 15mg?

Medicine Marketplace does not include a consultation fee and does not include delivery in the £271.00 price.

Is Medicine Marketplace GPhC registered?

Yes, Medicine Marketplace is registered with the General Pharmaceutical Council (GPhC number: 1116946). You can verify this on the GPhC register.

Related comparisons

Compare all pharmacies for 15mg →Medicine Marketplace — all doses →Compare all Mounjaro prices →All discount codes →

Prices updated March 2026. Always confirm with the pharmacy before ordering.