Contraceptive pills are a safe and effective way to prevent pregnancy. They work by preventing ovulation, the release of an egg from the ovary. There are many different types of contraceptive pills available, so finding one that is right for you is important.
Combination pills contain two hormones: estrogen and progestin. Progestin-only pills contain only one hormone, progestin. There are also extended-cycle pills, which are taken for 13 weeks at a time, and then you have a 1-week break.