All methods of heroin use — whether injection, smoking, or snorting — create a serious risk of addiction. People who use heroin over time develop a tolerance for the drug. Over time, heroin lessens a user’s ability to feel pleasure, so he or she must take the drug simply to feel normal. Addicted individuals who stop using heroin will also experience the intense and painful symptoms of withdrawal such as cravings, restlessness, muscle and bone pain, nausea, and vomiting.
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