Birth control pills

What are Birth Control Pills?

Birth control pills are a type of hormonal contraception that contains synthetic versions of the hormones estrogen and progesterone. Birth control pills work by preventing ovulation, or the release of an egg from the ovaries, which prevents pregnancy. Birth control pills are highly effective when taken correctly, but they may cause side effects such as nausea, headaches, and changes in mood. Women should talk to their healthcare provider about the risks and benefits of birth control pills before starting them.