“So sometimes quinidine is in there, Benadryl is in there. If nitazene is in there, it’s a garbage bag of drugs.” Like heroin and morphine, nitazenes attach to receptors in the brain and ...

3,8 As dextromethorphan is a substrate for CYP2D6 and quinidine is an inhibitor of CYP2D6 and p-glycoprotein, there is the potential for drug interactions. 44 Dose reductions of desipramine ...