Tirzepatide and oral contraceptive
Last Updated: Tuesday, 15 July 2025If you are using Tirzepatide (Mounjaro) weight loss injections, the effectiveness of oral contraceptive pills can be reduced.
If using the contraceptive pill, please use condoms for four weeks after each dose change, to avoid an unwanted pregnancy. This does not apply to Semaglutide (Ozempic).
Other forms of long term contraception, including the implant, coil and injection are not known to be affected.
If you would like to discuss your contraception, and consider an alternative please contact any of the following to arrange an appointment:
- Ainsdale Medical Centre
- 66 station Road, Ainsdale, Southport, PR8 3HW
- tel: 01704 575133
- 66 station Road, Ainsdale, Southport, PR8 3HW
- Sefton Sexual Health Clinic
- Southport Centre for Health and Wellbeing, Hoghton Street Southport PR9 0PQ
- tel: 01695 656550
- website: https://www.seftonsexualhealth.nhs.uk/
- Southport Centre for Health and Wellbeing, Hoghton Street Southport PR9 0PQ
- 7 Day GP Service
- 107 Liverpool Road, Birkdale, Southport, PR8 4DB
- tel: 01704 395755
- 107 Liverpool Road, Birkdale, Southport, PR8 4DB