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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.
Methadone has long been used for the treatment of heroin addiction. It is a long-acting opioid that is substituted for the shorter-acting drug. Methadone stays active in the bloodstream for an entire day in most cases, meaning that less of the drug will need to be taken at a time.