Lumigan 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 Lumigan (Bimatoprost). The combination is generally fine at 0.01%, 0.03%, but a small number of medications can reduce contraceptive efficacy meaningfully and need either a backup method or a switch.
How Lumigan 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 Bimatoprost acts on CYP3A4 determines whether Lumigan affects contraception. Most agents in Eye Care and Ophthalmic Treatments have no clinically meaningful effect on the pill at 0.01%, 0.03%.
Practical guidance
According to the prescribing information for Bimatoprost, women on hormonal contraception should review Lumigan 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 Lumigan therapy is the standard mitigation.
Frequently asked questions
Will Lumigan make my pill less effective? ▾
Most Eye Care and Ophthalmic Treatments medications at 0.01%, 0.03% do not affect oral contraceptive efficacy. The exceptions are CYP3A4-inducing drugs and a small number of others. The prescribing information for Bimatoprost states whether the interaction is meaningful.
Do I need a backup contraceptive on Lumigan? ▾
Backup contraception is needed only when there is a documented interaction between Lumigan and the contraceptive method. For most users at 0.01%, 0.03%, no backup is required. The pharmacist confirms whether Bimatoprost interacts with hormonal contraception.
More on Lumigan
- With alcoholLumigan and alcohol — is it safe to drink?
- With foodShould Lumigan be taken with food?
- Side effectsLumigan side effects: common, rare and warning signs
- Dosage guideLumigan dosage guide: how much to take and when
- OnsetHow fast does Lumigan start working?
- DurationHow long does Lumigan last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.