Inducing miscarriage is classified in most states as abortion or killing of the fetus due to medical and personal reasons. Drugs like methotrexate, mifepristone and misoprostol can kill the fetus, but surgical methods are still needed to extract contents and evacuate them out of the body. Makeshift abortion are very unsafe and can cause bleeding, shock, infection and eventual death. Here is the link for more reading: http://www.ask.com/wiki/Abortion
There are some things that can be done to induce miscarriage or abortion but these things are simply not encouraged. It could lead to fetal anomalies if the child survives. It could also put the mother’s life in danger.
Miscarriages are spontaneous abortions that happen in women before the fetus can survive. It usually occurs before the 13th week of pregnancy. Some of the causes are chromosomal aberrations in the fetus, illness involving the uterus, trauma, physical or emotional stress. For more details, check out www.MedicineNet.com