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Nurs Womens Health. 2012 Aug-Sep;16(4):331-5. doi: 10.1111/j.1751-486X.2012.01752.x.

Ulipristal acetate: the newest emergency contraceptive.

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Wheaton Franciscan Healthcare Medical Group-All Saints, Racine, WI, USA.


More than 50 percent of pregnancies in the United States are unplanned. Emergency contraception has been shown to possibly reduce the risk of pregnancy by as much as 75 percent. Ulipristal acetate is a selective progesterone receptor modulator that was approved by the U.S. Food and Drug Administration (FDA) for emergency contraceptive use in August 2010. This article reviews information on its mechanism of action, efficacy, safety and implications for women's health nurses.

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