5-MeO-aMT, or Alpha, has a reported threshold dose of just 0.5 mg, and 6-15 mg may be heavy. Effects are said to last 8-12 hours.[67] On Erowid, 5-MeO-aMT is linked to a number of hospitalizations and possible deaths following overdose (ranging from 5-50 mg).[68] It’s reportedly unscheduled in the USA—with the exception of Florida.[69][66]