Viagra Professional 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 Viagra Professional (Sildenafil Citrate). The combination is generally fine at 100mg, but a small number of medications can reduce contraceptive efficacy meaningfully and need either a backup method or a switch.
How Viagra Professional 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 Sildenafil Citrate acts on CYP3A4 determines whether Viagra Professional affects contraception. Most agents in Erectile Dysfunction (ED) have no clinically meaningful effect on the pill at 100mg.
Practical guidance
According to the prescribing information for Sildenafil Citrate, women on hormonal contraception should review Viagra Professional 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 Viagra Professional therapy is the standard mitigation.
Frequently asked questions
Will Viagra Professional make my pill less effective? ▾
Most Erectile Dysfunction (ED) medications at 100mg do not affect oral contraceptive efficacy. The exceptions are CYP3A4-inducing drugs and a small number of others. The prescribing information for Sildenafil Citrate states whether the interaction is meaningful.
Do I need a backup contraceptive on Viagra Professional? ▾
Backup contraception is needed only when there is a documented interaction between Viagra Professional and the contraceptive method. For most users at 100mg, no backup is required. The pharmacist confirms whether Sildenafil Citrate interacts with hormonal contraception.
More on Viagra Professional
- With alcoholViagra Professional and alcohol — is it safe to drink?
- With foodShould Viagra Professional be taken with food?
- Side effectsViagra Professional side effects: common, rare and warning signs
- Dosage guideViagra Professional dosage guide: how much to take and when
- OnsetHow fast does Viagra Professional start working?
- DurationHow long does Viagra Professional last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.