Nexium 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 Nexium (Esomeprazole). The combination is generally fine at 20mg, 40mg, but a small number of medications can reduce contraceptive efficacy meaningfully and need either a backup method or a switch.
How Nexium 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 Esomeprazole acts on CYP3A4 determines whether Nexium affects contraception. Most agents in Gastrointestinal Medications have no clinically meaningful effect on the pill at 20mg, 40mg.
Practical guidance
According to the prescribing information for Esomeprazole, women on hormonal contraception should review Nexium 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 Nexium therapy is the standard mitigation.
Frequently asked questions
Will Nexium make my pill less effective? ▾
Most Gastrointestinal Medications medications at 20mg, 40mg do not affect oral contraceptive efficacy. The exceptions are CYP3A4-inducing drugs and a small number of others. The prescribing information for Esomeprazole states whether the interaction is meaningful.
Do I need a backup contraceptive on Nexium? ▾
Backup contraception is needed only when there is a documented interaction between Nexium and the contraceptive method. For most users at 20mg, 40mg, no backup is required. The pharmacist confirms whether Esomeprazole interacts with hormonal contraception.
More on Nexium
- With alcoholNexium and alcohol — is it safe to drink?
- With foodShould Nexium be taken with food?
- Side effectsNexium side effects: common, rare and warning signs
- Dosage guideNexium dosage guide: how much to take and when
- OnsetHow fast does Nexium start working?
- DurationHow long does Nexium last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.