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. My London Pharmacy charges £299.00, which is 3% below the market average.

My London Pharmacy discount codes

29% offNew customers

NEW ONLY: 28.8% OFF 2.5MG

NEW288

10% offNew customers

NEW ONLY: 10% OFF OTHERS

NEW10

View all discount codes →

Frequently asked questions

How much does Mounjaro 15mg cost at My London Pharmacy?

Mounjaro 15mg at My London Pharmacy costs £299.00 per 4-week supply as of March 2026.

Is My London Pharmacy the cheapest for Mounjaro 15mg?

My London Pharmacy is ranked #26 out of 71 pharmacies for Mounjaro 15mg. The cheapest is £204.99 at Pharmacy Planet.

Does My London Pharmacy include consultation and delivery for Mounjaro 15mg?

My London Pharmacy does not include a consultation fee and does not include delivery in the £299.00 price.

Is My London Pharmacy GPhC registered?

Yes, My London Pharmacy is registered with the General Pharmaceutical Council (GPhC number: 9011790). You can verify this on the GPhC register.

Related comparisons

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

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