GIP/GLP-1 dual receptor agonist
Tirzepatide with the birth control pill
Many women of reproductive age take a combined or progestogen-only oral contraceptive while also using a chronic medication such as Tirzepatide (Tirzepatide). The combination is generally fine at 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg, 15mg, but a small number of medications can reduce contraceptive efficacy meaningfully and need either a backup method or a switch.
How Tirzepatide can affect contraceptive efficacy
Combined and progestogen-only contraceptives are metabolised through CYP3A4. Strong CYP3A4 inducers (some antiepileptics, rifampicin, St John's Wort) lower contraceptive plasma levels and reduce efficacy. Whether Tirzepatide acts on CYP3A4 determines whether Tirzepatide affects contraception. Most agents in GIP/GLP-1 dual receptor agonist have no clinically meaningful effect on the pill at 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg, 15mg.
Practical guidance
According to the prescribing information for Tirzepatide, women on hormonal contraception should review Tirzepatide with the prescribing pharmacist or doctor. Where an interaction is documented, additional barrier contraception or switching to a non-oral method (IUD, implant) for the duration of Tirzepatide therapy is the standard mitigation.
Frequently asked questions
Will Tirzepatide make my pill less effective? ▾
Most GIP/GLP-1 dual receptor agonist medications at 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg, 15mg do not affect oral contraceptive efficacy. The exceptions are CYP3A4-inducing drugs and a small number of others. The prescribing information for Tirzepatide states whether the interaction is meaningful.
Do I need a backup contraceptive on Tirzepatide? ▾
Backup contraception is needed only when there is a documented interaction between Tirzepatide and the contraceptive method. For most users at 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg, 15mg, no backup is required. The pharmacist confirms whether Tirzepatide interacts with hormonal contraception.
Products containing Tirzepatide
More on Tirzepatide
- With alcoholTirzepatide and alcohol — is it safe to drink?
- With foodShould Tirzepatide be taken with food?
- Side effectsTirzepatide side effects: common, rare and warning signs
- Dosage guideTirzepatide dosage guide: how much to take and when
- OnsetHow fast does Tirzepatide start working?
- DurationHow long does Tirzepatide last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.