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. The Family Chemist charges £279.98, which is 9% below the market average.

The Family Chemist discount codes

£5 offNew customers

£5 Off First Orders

FIRST5

View all discount codes →

Frequently asked questions

How much does Mounjaro 15mg cost at The Family Chemist?

Mounjaro 15mg at The Family Chemist costs £279.98 per 4-week supply as of March 2026.

Is The Family Chemist the cheapest for Mounjaro 15mg?

The Family Chemist is ranked #9 out of 71 pharmacies for Mounjaro 15mg. The cheapest is £204.99 at Pharmacy Planet.

Does The Family Chemist include consultation and delivery for Mounjaro 15mg?

The Family Chemist does not include a consultation fee and does not include delivery in the £279.98 price.

Is The Family Chemist GPhC registered?

Yes, The Family Chemist is registered with the General Pharmaceutical Council (GPhC number: 9012318). You can verify this on the GPhC register.

Related comparisons

Compare all pharmacies for 15mg →The Family Chemist — all doses →Compare all Mounjaro prices →All discount codes →

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