The morning after pill will now be more widely available over the counter. The Food and Drug Administration is now allowing generic versions of the drug to be sold without a prescription.
The move will make it cheaper for women of any age to get the emergency contraception. That has raised concerns for many who say the drug will be too easy for young girls to access.
Critics say the pill is 40 times stronger than traditional birth-control drugs. They argue that Teva Pharmaceuticals, the drug manufacturer, has yet to conduct clinical trails on teens under the age of 17.
There is currently no data on how the pill affects the growing body of a young teen.
Before the FDA's recent decision, the generic and cheaper versions of the morning after pill could only be obtained with a prescription because of a deal with the Plan B manufacturer.