any major dude
Bluelight Crew
In normal dosages tryptamines and the less amphetamine-esque phenethylamines don't produce the kinds of problems associated with MDMA and amphetamines. Also, much of the damage to the brain from any drug is caused more by repeated exposure than acute drug effects (except in overdoses, obviously). So unless you're tripping on DOx compounds semi-daily, I wouldn't expect the type of blood flow reduction and damage to dopaminergic circuitry that is common in frequent users of amphetamines.
