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Heroin can be used in a variety of ways, depending on user preference and the purity of the drug. Heroin can be injected into a vein (âmainliningâ), injected into a muscle, placed on tinfoil and inhaled as smoke through a straw or snorted as powder via the nose.eroin can be used in a variety of ways, depending on user preference and the purity of the drug. Heroin can be injected into a vein (âmainliningâ), injected into a muscle, placed on tinfoil and inhaled as smoke through a straw or snorted as powder via the nose.
People who use heroin over the long term may develop: 1  collapsed veins. 2  infection of the heart lining and valves. 3  abscesses (swollen tissue filled with pus)  constipation and stomach 1  cramping. liver or kidney disease.  lung complications, including various types of pneumonia.