Abortion pill reversal works in the exact opposite way as mifepristone. Instead of blocking progesterone from the womb, it floods the receptors with progesterone to help the pregnancy continue as normal. According to the Abortion Pill Rescue Network, medical professionals have been able to save 64-68% of pregnancies through abortion pill reversal.
For the greatest chance of success, it’s best to start abortion pill reversal as soon as possible, as the effectiveness decreases with time. Even if it’s been over 72 hours since you took your first abortion pill, there’s still a chance the abortion could be reversed.