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 69 UK pharmacies is £306.60. Pharmacy Advance charges £314.99, which is 3% above the market average.

Frequently asked questions

How much does Mounjaro 15mg cost at Pharmacy Advance?

Mounjaro 15mg at Pharmacy Advance costs £314.99 per 4-week supply as of March 2026.

Is Pharmacy Advance the cheapest for Mounjaro 15mg?

Pharmacy Advance is ranked #47 out of 69 pharmacies for Mounjaro 15mg. The cheapest is £204.99 at Pharmacy Planet.

Does Pharmacy Advance include consultation and delivery for Mounjaro 15mg?

Pharmacy Advance does not include a consultation fee and does not include delivery in the £314.99 price.

Is Pharmacy Advance GPhC registered?

Yes, Pharmacy Advance is registered with the General Pharmaceutical Council (GPhC number: 9012423). You can verify this on the GPhC register.

Related comparisons

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

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