'heroin' originates from German, specifically the word 'Heroin,' where 'heroisch' meant 'heroic' due to its initially perceived powerful effects.

'Heroin' was derived from the German word 'Heroin,' and eventually became the modern English word 'heroin.'

Initially, it was marketed as a non-addictive morphine substitute, but over time it evolved into its current meaning of a highly addictive drug.