<prompt> All are adulterants of Heroin, except -Chalk powderQuinineCharcoalFructose  <response>: Important adulterants in heroin are starch fructose sucrose, caffeine, quinine, Paracetamol, scopolamine Hyoscine, Noscapine, Lidocaine, Procaine, Phenobarbitone, Theophylline, Strychnine, Chalk, Flour, Talcum powder, Powdered milk, Phenacetin. 