Wegovy 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 Wegovy (Semaglutide). The combination is generally fine at 0.25mg, 0.5mg, 1mg, 1.7mg, 2.4mg, but a small number of medications can reduce contraceptive efficacy meaningfully and need either a backup method or a switch.
How Wegovy 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 Semaglutide acts on CYP3A4 determines whether Wegovy affects contraception. Most agents in Diabetes Treatment have no clinically meaningful effect on the pill at 0.25mg, 0.5mg, 1mg, 1.7mg, 2.4mg.
Practical guidance
According to the prescribing information for Semaglutide, women on hormonal contraception should review Wegovy 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 Wegovy therapy is the standard mitigation.
Frequently asked questions
Will Wegovy make my pill less effective? ▾
Most Diabetes Treatment medications at 0.25mg, 0.5mg, 1mg, 1.7mg, 2.4mg do not affect oral contraceptive efficacy. The exceptions are CYP3A4-inducing drugs and a small number of others. The prescribing information for Semaglutide states whether the interaction is meaningful.
Do I need a backup contraceptive on Wegovy? ▾
Backup contraception is needed only when there is a documented interaction between Wegovy and the contraceptive method. For most users at 0.25mg, 0.5mg, 1mg, 1.7mg, 2.4mg, no backup is required. The pharmacist confirms whether Semaglutide interacts with hormonal contraception.
More on Wegovy
- With alcoholWegovy and alcohol — is it safe to drink?
- With foodShould Wegovy be taken with food?
- Side effectsWegovy side effects: common, rare and warning signs
- Dosage guideWegovy dosage guide: how much to take and when
- OnsetHow fast does Wegovy start working?
- DurationHow long does Wegovy last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.