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 72 UK pharmacies is £306.35. Chemist4U charges £298.00, which is 3% below the market average.

Frequently asked questions

How much does Mounjaro 15mg cost at Chemist4U?

Mounjaro 15mg at Chemist4U costs £298.00 per 4-week supply as of March 2026.

Is Chemist4U the cheapest for Mounjaro 15mg?

Chemist4U is ranked #23 out of 72 pharmacies for Mounjaro 15mg. The cheapest is £149.99 at Ashcroft Pharmacy.

Does Chemist4U include consultation and delivery for Mounjaro 15mg?

Chemist4U does not include a consultation fee and does not include delivery in the £298.00 price.

Is Chemist4U GPhC registered?

Yes, Chemist4U is registered with the General Pharmaceutical Council (GPhC number: 9012464). You can verify this on the GPhC register.

Related comparisons

Compare all pharmacies for 15mg →Chemist4U — all doses →Compare all Mounjaro prices →All discount codes →

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