Medication abortions were the preferred method for ending pregnancy in the U.S. even before the Supreme Court overturned Roe v. Wade. As more states seek abortion limits, demand is expected to grow. They involve using two prescription medicines days apart _ pills that can be taken at home or in a clinic. The drug mifepristone is taken first. It blocks the effects of the hormone progesterone, which is needed to sustain a pregnancy. Misoprostol is taken 24 to 48 hours later. It cause the womb to contract, expelling the pregnancy. Use of the pills has been increasing in recent years.