Emergency contraception. Fact sheet.
Emergency contraception can prevent most pregnancies when taken after intercourse. Emergency contraception can be used following unprotected intercourse, contraceptive failure, incorrect use of contraceptives, or in cases of sexual assault. There are two methods of emergency contraception: emergency contraceptive pills (ECPs) and copper-bearing intrauterine devices (IUDs). When inserted within five days of unprotected intercourse, a copper-bearing IUD is the most effective form of emergency contraception available. The emergency contraceptive pill regimen recommended by WHO is one dose of levonorgestrel 1.5 mg, taken within five days (120 hours) of unprotected intercourse.