What is one of the most addictive substances that is derived from opium?

Heroin is one of the most addictive substances derived from opium. It is created by processing morphine, which is obtained directly from the opium poppy. Heroin acts as a powerful narcotic that binds to the brain's opioid receptors, leading to intense feelings of euphoria and pain relief. The rapid onset of these effects can lead to a high potential for misuse and addiction, as individuals may seek to recreate the pleasurable sensations associated with its use.

In contrast, substances like cocaine and marijuana come from different plants and have varying effects and potential for addiction. Opium itself is the raw material, whereas heroin is a refined and more potent derivative. This distinction highlights why heroin is considered particularly dangerous and addictive compared to other listed substances.