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.

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.