The combined oral contraceptive pill COCP , often referred to as the birth control pill or colloquially as " the pill ", is a type of birth control that is designed to be taken orally by women. It includes a combination of an estrogen usually ethinylestradiol and a progestogen specifically a progestin. When taken correctly, it alters the menstrual cycle to eliminate ovulation and prevent pregnancy. They were first approved for contraceptive use in the United States in , and are a very popular form of birth control. They are currently used by more than million women worldwide and by almost 12 million women in the United States. Two forms of combined oral contraceptives are on the World Health Organization's List of Essential Medicines , the most important medications needed in a basic health system.
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Oral contraceptive pills lower hormone levels in girls with PCOS and regulate their menstrual periods. Oral contraceptive pills contain two types of synthetic female hormones, progestin and estrogen. Similar hormones are made by the ovaries. There are many different kinds of oral contraceptives.
Oral contraceptives birth control pills are hormone-containing medications that are taken by mouth to prevent pregnancy. They prevent pregnancy by inhibiting ovulation and also by preventing sperm from penetrating through the cervix. By far the most commonly prescribed type of oral contraceptive in the United States contains synthetic versions of the natural female hormones estrogen and progesterone. This type of birth control pill is often called a combined oral contraceptive.