Opioids

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An opioid refers to any substance from a group of analgesic agents derived from the ingredient opium.

Four naturally occurring alkaloids can be isolated from the opium poppy seed (papaver somniferum). These plant-derived amines are morphine, codeine, papaverine and thebaine. These can be used to produce many varieties of semi-synthetic opioids useful in clinical medicine including diamorphine, dihydrocodeine, buprenorphine, nalbuphine, naloxone and oxycodone.