Medical professionals administer high levels of progesterone. This makes up for the blocking effect of Mifepristone. This treatment is then continued for several weeks
Even without this procedure, Mifepristone alone may still fail to abort the pregnancy.
If performed early, this procedure has had a good success rate
The American Association of Pro-Life Obstetricians and Gynecologists (AAPLOG) reported that the procedure is safe and significantly more effective than waiting to see what happens without taking Misoprostol
It is good to note that, if the pregnancy does continue, neither progesterone nor Mifepristone are known to cause birth defects.