The operator of one website says that the demand for abortion pills has skyrocketed since the June decision, according to the Wall Street Journal, which notes that some of the websites are registered overseas - and are different from US-based telehealth operators that prescribe and sometimes ship the pills to patients who live in states where the procedure is legal.

Sites are charging as much as $500 per pack of abortion pills, and hold themselves out as providing access to pills for those who can't reach a clinic - or who live in states where abortion telehealth is illegal.

The unregulated market creates risks, according to abortion-rights advocates, including that the pills may arrive too late to be used effectively. What's more, those buying abortion pills online without a prescription in states where it's illegal could face criminal charges, legal experts advise.

Some health experts expressed concerns about websites potentially selling bogus drugs or not providing adequate information and medical support. "You don't know what you're getting," said Al Carter, executive director of the National Association of Boards of Pharmacy, which represents state pharmacy boards.

Two medications, mifepristone and misoprostol, are typically used in a medication-abortion regimen, which the FDA has approved for up to 10 weeks of pregnancy. Websites selling abortion pills without a prescription are mainly selling pills that haven't been reviewed by the FDA, according to descriptions on the sites and information from buyers. The FDA has sent complaints to some companies associated with websites selling abortion pills online. -WSJ