Heroin is an addictive drug that is processed from morphine and usually appears as a white or brown powder or as a black, sticky substance. It is injected, snorted, or smoked.
Heroin (diacetylmorphine (INN)), also known as diamorphine (BAN), is a semi-synthetic opioid drug synthesized from morphine, a derivative of the opium poppy. It is the 3,6-diacetyl ester of morphine (di (two)-acetyl-morphine).
The white crystalline form is commonly the hydrochloride salt diacetylmorphine hydrochloride, though often adulterated thus dulling the sheen and consistency from that to a matte white powder, which diacetylmorphine freebase typically is. 90% of diacetylmorphine is thought to be produced in Afghanistan.