The Supreme Court on Monday restored broad access to the abortion pill mifepristone, blocking a ruling that had threatened to upend one of the main ways abortion is provided across the nation.

The order signed by Justice Samuel Alito temporarily allows women seeking abortions to obtain the pill at pharmacies or through the mail, without an in-person visit to a doctor.

Those rules had been in effect for several years until a federal appeal court imposed new restrictions last week.

Most abortions in the US are obtained through medications, usually a combination of mifepristone and a second drug, misoprostol. Their availability has blunted the impact of abortion bans that most Republican-led states have started enforcing since a 2022 Supreme Court ruling that overturned Roe v. Wade, and allowed for state bans.

Louisiana sued to restrict access to mifepristone, asserting that its availability undermined the ban there.