Opioids are a class of drugs that are commonly prescribed for their analgesic, or pain-killing, properties. They include substances such as morphine, codeine, oxycodone, and methadone. Opioids may be more easily recognized by drug names such as Kadian, Avinza, OxyContin, Percodan, Darvon, Demerol, Vicodin, Percocet, and Lomotil.
Opioids may be classified as natural, semi-synthetic, fully synthetic, or endogenous. Natural opioids such as codeine and morphine are derived from opiate alkaloids contained in the resin of the opium poppy. Semi-synthetic opioids such as oxycodone and hydrocodone are created by chemically altering the natural opioids. Fully synthetic opioids such as methadone are synthesized from non-opioid substances in laboratories. Endogenous opioids are naturally produced by the body and include substances such as endorphins.
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http://www.medicalnewstoday.com/info/oic/what-are-opioids.php
Sunday, November 1, 2009
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