Heroin is an opioid drug derived from morphine that has a high potential for addiction. It is typically injected, smoked, or snorted, and its effects include a powerful sense of euphoria and relief from pain. However, heroin use can lead to severe physical and psychological dependence, as well as dangerous health consequences, including overdose and death.

Heroin addiction is a chronic, relapsing condition that can cause changes in the brain’s chemistry and function. Those who struggle with heroin addiction may find it difficult to stop using the drug, even in the face of harmful consequences.