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Society of Family Planning Clinical Recommendations: Emergency contraception

      Abstract

      Emergency contraception refers to several contraceptive options that can be used within a few days after unprotected or underprotected intercourse or sexual assault to reduce the risk of pregnancy. Current emergency contraception options available in the United States include the copper intrauterine device (IUD), levonorgestrel (LNG) 52mg IUD, oral levonorgestrel (such as Plan B One-Step®, My Way®, Take Action®), and oral ulipristal acetate (UPA) (ella®). These clinical recommendations review the indications, effectiveness, safety, and side effects of emergency contraceptive methods; considerations for the use of emergency contraception by specific patient populations and in specific clinical circumstances, and current barriers to emergency contraceptive access. Further research is needed to evaluate the effectiveness of levonorgestrel IUDs for emergency contraceptive use; address the effects of repeated use of ulipristal acetate at different times in the same menstrual cycle; assess the impact on ovulation of initiating or reinitiating different regimens of regular hormonal contraception following ulipristal acetate use; and elucidate effective emergency contraceptive pill options by body mass indices or weight.

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