The term Opioid is used to refer to any psychoactive drug, natural or synthetic, that causes the same physical and mental effects as opium-derived drugs such as morphine, codeine, or heroin. Although often used interchangeably, opioid is not a synonym for Opiates, as the term opiate refers only to opium-derived substances.

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Mohammed Looti, PSYCHOLOGICAL SCALES (2023) Opioid. Retrieved from https://scales.arabpsychology.com/terms/opioid/. DOI: 10.13140/RG.2.2.31575.96163