Heroin is an opioid drug derived from morphine. It was first synthesized in 1874 and was used medically and commercially until the 1920s when laws were passed to restrict its use and distribution. Heroin can be administered via injection, inhalation, snorting or smoking and leads to both short-term physical effects like euphoria and drowsiness as well as long-term addiction. Chronic heroin use often disrupts users' lives through financial issues, health problems, and legal consequences as they seek to maintain their addiction.