A study of a pharmaceutical form of the psychedelic drug lysergic acid diethylamide suggests it might relieve anxiety symptoms for up to three months.

The study paves the way for additional testing and possible medical approval of a psychedelic drug that has been banned in the U.S. for more than a half century.

A study of a pharmaceutical form of the psychedelic drug lysergic acid diethylamide suggests it might relieve anxiety symptoms for up to three months.