Hey guys, I was wondering how safe it is to combine heroin and promethazine? I usually take around 25 mg when I dose with oxy, but I'm kinda worried about mixing promethazine and heroin. Are there any common cutters in heroin that in combination with prometh lead to OD or any other complications? I get so itchy on gear, worse than anyone else does so I need something to help me out. Would a better option be to go with a non sedating antihistamine? (eg. Fexofenadine, telfast). Any help would be greatly appreciated