<prompt> Progesterone of choice in emergency contraception isNorethisteroneMedroxy progesteroneDesogestrelLevonorgestrel  <response>: Levonorgestrel Levonorgestrel alone, 0.75 mg stat FB another 0.75 mg 12 hrs later, taken within 72 hrs of unprotected intercourse is the method of choice .for emergency contraception Emergency contraception is also ka postcoital morning after contraception. Basically the methods used interfere with the physiological events before implantation, for e.g. inhibition or delaying of ovulation or interference with postovulatory events necessary for implantation longevity of the blastocyst. Agents used for emergency contraception are known as interceptives. Methods of emergency contraception Drugs Dosage Time frame Preg. rate High dose estrogens not used now - Ethinyl estradiol EE 2.5 mg BD x 5 days Within 72 hrs of coitus L-0.15 - Conjugated equine estrogen CEE 15 mg BD x 5 days 0-0.6 Estrogen progestin combination pill ,, - Yuzpe method EE 50 rg d, l-NG 0.5 mg Ovral 2 tabs stat 2 tabs after 12 hrs ,, ,, 0-2 Total dose EE 0.2 mg LNG 2 mg - Low dose pills ,, II 0-2 EE 30 lig LNG 0.15mg Ovral L, Mala-N etc. 4 tabs stat 4 tabs after 12 hors Levonorgestrel LNG alone Ecee 2, i- 0.75 mg stat FB Preferably 0-1 pill, E-pill, unwanted-72, Plan-B 0.75 mg after 12 hrs or 1.5 mg stat within 72 hrs but can be given upto 5 days Centchroman 30mg 2 tab BD x 1 day Within 5 days not known Saheli Danazol 400800 mg BD x Within 72 hrs 0.8 - 1.7 3 days or 1200 mg BD x 2 days Mifepristone RU 486 600 mg200 mg Within 5 days to - 1.3 10 mg single dose 27th day of cycle Copper IUD more effective than steroids To be inseed within 7 days 1 