Tirzepatide (also called Mounjaro^®) is a weight loss medicine that makes you feel fuller for longer and therefore less hungry. It comes in the form of an injection which you inject yourself, once a week. Your doctor or nurse will show you how to use it.

From 23 March 2025, you can be prescribed tirzepatide (Mounjaro^®) to manage your weight on the NHS only if it is prescribed by a specialist weight management service, and if they feel it is the right treatment for you.

If tirzepatide (Mounjaro^®) is recommended, you will need to eat a balanced, reduced calorie diet and take part in physical activity regularly whilst taking the medicine.

Before prescribing tirzepatide (Mounjaro^®), a healthcare professional will talk through the benefits and limitations, including any side affects you might get.

Tirzepatide (Mounjaro^®) is not recommended if you’re pregnant or planning to get pregnant, breastfeeding, or if you have certain health conditions.

If you’re using tirzepatide (Mounjaro^®) and taking the contraceptive pill, you should use an additional method of contraception, such as a condom. This is because your body may not absorb the contraceptive pill while using tirzepatide (Mounjaro^®). For more information about these medicines and contraception see: GLP-1 agonists and contraception

When tirzepatide (Mounjaro^®) should be used for weight management

From 23 June 2025 tirzepatide (Mounjaro^®) will be made available through primary care, for some patents, who are at high risk of weight related complications and ill health.

Check with your local integrated care board to see if you will be eligible to be assessed to see if tirzepatide (Mounjaro^®) is the right treatment for you.