The U.S. Supreme Court will take up a case Tuesday that could impact how women get access to mifepristone, one of the two pills used in the most common type of abortion in the nation.
The central dispute in the case is whether the Food and Drug Administration overlooked serious safety problems when it made mifepristone easier to obtain, including through mail-order pharmacies.
Legal briefs filed with the court describe the pill’s safety in vastly different terms: Medical professionals call it “among the safest medications” ever approved by the FDA, while the Christian conservative group suing the agency attributes “tens of thousands” of “emergency complications” to the drug.
Earlier this year, a medical journal retracted two studies that claimed to show the harms of mifepristone. The studies were cited in the pivotal Texas court ruling that brought the matter before the Supreme Court. The publisher cited conflicts of interest by the authors and flaws in their research, although the studies’ lead author called the retractions a baseless attack.
Here’s what to know about the safety of mifepristone, which is typically used with misoprostol in a medication abortion.
The FDA approved mifepristone in 2000 as a safe and effective way to end early pregnancies.
There are rare occasions when mifepristone can cause dangerous, excessive bleeding that requires emergency care. Because of that, the FDA imposed strict safety limits on who could prescribe and distribute it — only specially certified physicians and only as part of three mandatory in-person appointments with the patient getting the drug.
The doctors also had to be capable of performing emergency surgery to stop excess bleeding and an abortion procedure if the drug didn’t end the pregnancy.
Over the years, the FDA reaffirmed mifepristone’s safety and repeatedly eased restrictions, culminating in a 2021 decision doing away with any in-person requirements and allowing the pill to be sent through the mail.
Abortion opponents say the more lax restrictions resulted in many more “emergency complications.” But that argument lumps together women experiencing a range of issues with mifepristone — from the drug not working to people who may simply have questions or concerns but don’t require medical care.
OB-GYNs say a tiny fraction of patients suffer “major” or “serious” adverse events after taking mifepristone.
A legal brief by a group of medical organizations including the American College of Obstetricians and Gynecologists says: “When used in medication abortion, major adverse events — significant infection, excessive blood loss, or hospitalization — occur in less than 0.32% of patients, according to a highly regarded study with more than 50,000 patients.”
The definition that scientists generally use for serious adverse events includes blood transfusions, major surgery, hospital admissions and death, said Ushma Upadhyay, one of the authors of that 2015 study. She added: “The hospital admission is a catch-all for the very serious but more rare events such as major infection.”
The prescribing information included in the packaging for mifepristone tablets lists slightly different statistics for what it calls “serious adverse reactions.” It cites ranges for how frequently various complications occur: 0.03% to 0.5% for transfusion; 0.2% for sepsis and 0.04% to 0.6% for hospitalization related to medication abortions. The ranges reflect findings across various relevant studies, experts said.
