Abortion Pill (RU-486)


RU-486 is the name commonly used for an artificial steroid that blocks progesterone, a hormone needed to continue a pregnancy.

Other names for RU-486:

Mifepristone is the generic name for RU-486. In the U.S., RU-486 is sold under the brand names Mifeprex® and Early Option®.

Note: An RU-486 abortion involves two drugs

When taken alone, RU-486 causes a complete abortion only about 60% of the time.3 A second drug, a prostaglandin, is given 48 hours later to increase its effectiveness. The prostaglandin causes uterine contractions to help expel the embryo.

Effectiveness of RU-486 plus misoprostol

RU-486 and misoprostol can be used only for very early abortions.
After the 7th week of pregnancy, effectiveness drops below a level the FDA considers safe.
92% of women taking RU-486/misoprostol through the 7th week of pregnancy had a complete abortion.
But only 77% of women taking RU-486 in the 9th week LMP had a complete abortion.