When does birth control pills start working?

Birth control pills are a popular way to prevent pregnancy. They work by stopping your body from releasing an egg, which is needed for pregnancy. According to the research, if you start taking the pill on the first day of your period, it might start working right away. But if you start on any other day, it could take up to 7 days for the pill to be effective.

How It Works

• Starting Time: If you begin taking the pill on the first day of your menstrual cycle, it may work immediately.
• Other Times: Starting the pill at any other time may require up to 7 days for full effectiveness.

Safety Tips

• First Month: To be extra safe, consider using another form of birth control, like condoms, during the first month of pill use.

Important Note

• Interactions: Some medicines or herbal supplements, like St John's wort, can make birth control pills less effective. Always talk to a healthcare provider about any other medications you are taking.