within 72 hours of unprotected intercourse and repeated after 12 hours - Yuzpe method. b) Levonorgestrel alone 0.75 mg taken twice with 12 hour gap within 72 hours of unprotected intercourse - method of choice for emergency contraception. c) Mifepristone 600 mg single dose within 72 hours of unprotected intercourse. B. Injectable They are given i.m. as oily solution 1.Long acting progestin alone a) Depot medroxy progesterone acetate (DMPA) 150 mg at 3 month intervals. or b) Norethindrone (norethisterone) enanthate (NEE) 200 mg at 2 months intervals. c) The most impoant undesirable propey is complete disruption of menstural bleeding pattern and total amenorrhoea (more common with DMPA). 2.Long acting progestin + long acting estrogen - once a month.">