How The Pill Works

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Female: Eighteen million women worldwide pop a pill once a day to avoid pregnancy. How do they work?

Female: Oral contraceptives generally all work in the same manner. They prevent woman from ovulating or releasing an egg each month. The pills are over 99% effective if use correctly. At the beginning of a woman’s menstrual cycle levels of the hormone estrogen rise for about 14 days, which is when they peak. At this point the bodies ovary is reacted the high estrogen level by releasing an egg to be fertilized. After ovulation has occurred another hormone called progestin begins to increase preparing the uterus to allow a fertilized egg to implant. Oral contraceptives contains synthetic versions of both the hormones progestin and estrogen. They prevent ovulation from occurring by keeping hormone levels from fluctuating. Hormones are excess estrogen is not made to release an egg. An excess progestin does not cause uterus to put for fertilize egg to implant. That not all pills are created equal. Learn about the various formulas in our other videos.

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