The Georgia Poison Center warns metro Atlanta parents and teens about a dangerous synthetic drug known as "N-bomb" or "Legal LSD."

The poison center was notified when a teenager showed up at Northside Hospital-Forsyth this week, complaining about a bad trip after he took N-bomb.

"He started experiencing toxic effects," Poison Center Director Dr. Gaylord Lopez tells Channel 2 Action News. "He was hallucinating, his temperature started to rise.  His heart rate started to go up and his blood pressure started to go up."

The teen told doctors he was just experimenting with the club drug as a test run before prom.  He was treated and released.

According to the Drug Enforcement Administration, 20 deaths have been linked to N-bomb or its variants.  The designer drug can be taken in liquid, powder or blotter form and is billed as an alternative to LSD.