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Loestrin Fe is a highly effective birth control pill with the lowest level of estrogen (20 mcg per pill) allowed by the FDA. When taken properly, Loestrin Fe is over 99% effective in preventing pregnancy. Like all birth control pills, Loestrin Fe prevents pregnancy by providing hormones (estrogen and progestin) that suppress ovulation (the maturing and release of an egg) and other related changes your body goes through in preparation for a pregnancy.

Most side effects of the Pill are not serious and those that are, occur infrequently. Serious risks, which can be life threatening, include blood clots, stroke, and heart attacks, and are increased if you smoke cigarettes Some women should not use the Pill, including women who have or have had blood clots, certain cancers, a history of heart attack or stroke, as well as those who are or may be pregnant. The Pill does not protect against HIV or sexually transmitted diseases.

Ethinyl Estradiol and Progestin, Norethindrone Acetate.