personally i never used drugs while djing although i do know many dj's who do..to me i think it would ruin my mood and mess up my whole set espec if i got bad shit or just a bad head....ive read in an interview w/ dt that he tried E a few times while djing so who knows maybe some dj's do use drugs...o and lets not forget jr. vasquez..how many drugs is he on when he dj's?? God only only knows....soo i guess its a toss up some probably do and some not.....