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What is heroin ? Heroin is an opioid drug made from morphine, a natural substance taken from the seed pod of the various opium poppy plants grown in Southeast and Southwest Asia, Mexico, and Colombia. Heroin can be a white or brown powder, or a black sticky substance known as black tar heroin. Other common names for heroin include big H, horse, hell dust, and smack. Buying Drugs Online . How do people use heroin? People inject, sniff, snort, or smoke heroin. Some people mix heroin with crack cocaine, a practice called speedballing. What are the effects of heroin? Heroin enters the brain rapidly and binds to opioid receptors on […]