25I-NBOMe, better known as N-Bomb or simply 25I, is a synthetic designer drug that is used for neurochemistry and brain mapping. It’s also a potent psychedelic hallucinogen. Like its cousins in the 2C family of synthetic drugs, 25I is used recreationally for its similarity to MDMA. It causes an increase in empathy and affection as well as visual hallucinations. It may also cause extreme anxiety or a feeling of doom.
Unlike the 2C family and MDMA, 25I is fatal at high doses. An effective dose is less than a milligram, while similar synthetic hallucinogens require anywhere between 3 to 10 mg. There have been several recorded instances of overdose caused by mistaken identity.