The drug compounds are marketed online and through illicit channels as hallucinogens. They have no approved medical use and have not been approved for consumption by the Food and Drug Administration, the DEA statement said.
The drugs are identified as synthetic phenethylamines 251-NBOMe, 25C-NBOMe and 25B-NBOMe Schedule 1.
The compounds have been responsible for the deaths of at least 19 people in the United States in the past year, the statement said.
Swim Week Miami Beach 2014 [PHOTOS]