World Health Organization recommends 1.5 mg of levonorgestrel as a single dose, given up to 120 hours after intercourse.The antiprogesterone mifepristone (RU486) is highly effective for postcoital contraception. The usual aboifacient dose is 200 mg, but a dose of only 10 mg is effective for emergency contraception.Ulipristal, a new progesterone-receptor modulator was approved by the FDA for emergency contraception to 120 hours after intercourse. It is at least as effective as levonorgestrel 1.5 mg up to 72 hours and may be superior between 72 and 120 hours (270). When Ulipristal is administered prior to the luteinizing hormone (LH) peak, it delays rupture of the preovulatory follicle for 5 days or more, which may be its primary mechanism of action.Efficacy of Cu T contraception is 100% when the device is inseed up to 5 days after intercourse.Yuzpe method is ethinyl estradiol, 0.100 mg plus levonorgestrel 0.50 mg x 2, 12 hours later Reference: Novak's gynaecology; 14th edition; Chapter 10; Family planning