Misoprostol is the second medication in a medical abortion. It's taken 24-48 hours after Mifepristone. It cases cramps so the remains come out and the abortion is finished.
There are many medications that could hurt the fetus (not abort) so always ask your doctor before taking anything. Since you added this question to Abortion I can tell you that for abortion you have...
To terminate a pregnancy. from wiki...Other medical applications of mifepristone that have been studied in Phase II clinical trials include regular long-term use as an oral contraceptive, and...
Some men use it to treat their "man breasts", if a condition called gynecomastia exists. Other wise its used for Breast Cancer Patients, as it helps block, or disturb estrogen production.