It is a monthly series of pills taken once a day at the same time each day. The active ingredients are synthetic hormones like those produced by the body to regulate the menstrual cycle. Combined oral contraceptives contain both estrogen and progestin. Mini-pills contain progestin only. You also can use this information to help become pregnant.
Sterilization is surgical birth control.
It is intended to be permanent. It is not easily reversed. Withdrawal often is used to prevent pregnancy when no other method is available.