The birth control pill is a medication taken by women to prevent pregnancy. It contains hormones, usually a combination of estrogen and progestin, which work to inhibit ovulation, making it less likely for an egg to be fertilized. When taken correctly, the pill can be over 99% effective in preventing pregnancy. In addition to preventing pregnancy, the birth control pill can also help regulate menstrual cycles and reduce symptoms of conditions like polycystic ovary syndrome (PCOS) and endometriosis. It is important for users to consult with a healthcare provider to determine the best option for their individual needs.