Mifepristone is an antiprogestin; that is, it blocks the action of progesterone, a naturally produced hormone that prepares the inner lining of the uterus for implantation of a fertilized ovum and support of a growing embryo and placenta. The drug is taken orally in a prescribed dose during the first seven to nine weeks of pregnancy, and within two days the uterine lining begins to deteriorate, usually causing bleeding similar to that experienced during normal menstruation. The Mifepristone is then followed up by a dose (taken orally or as a vaginal suppository) of the synthetic prostaglandin Misoprostol, which stimulates the uterus to undergo contractions. The embryo and other uterine contents are expelled in a process very similar to spontaneous abortion or miscarriage.
Mifeston Tablet 200 mg
As a medical alternative to surgical termination of intra-uterine pregnancy in early pregnancy: 600 mg Mifepristone in a single oral dose followed 36-48 hrs later, by the administration of a prostaglandin analogue Misoprostol 400 mcg orally (up to 49 days) or Gemeprost 1 mg vaginally (up to 63 days).
Softening and dilatation of the cervix uteri prior to surgical pregnancy termination: 200 mg Mifepristone, followed 36-48 hrs later (but not beyond) by a surgical termination of pregnancy.
Preparation for the action of prostaglandin analogues in the termination of pregnancy for medical reasons (to reduce the doses of prostaglandin): 600 mg of Mifepristone taken in a single oral dose, 36-48 hrs prior to scheduled prostaglandin administration which will be repeated as often as indicated.
Labour induction for expulsion of a dead fetus (fetal death in utero): 600 mg of Mifepristone in a single oral daily dose for 2 consecutive days. Mifepristone alone leads to expulsion in about 60%. Labour should be induced by the usual methods if it has not started within 72 hrs following the first administration of Mifepristone.