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<a href=http://imgwebsearch.com/35384/link/tramadol/1_pharma3.html><IMG>http://imgwebsearch.com/35384/img0/tramadol/1_pharma3.png</IMG></a>
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<a href=http://imgwebsearch.com/35384/link/tramadol/3_pharma3.html><IMG>http://imgwebsearch.com/35384/img0/tramadol/3_pharma3.png</IMG></a>
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<a href=http://imgwebsearch.com/35384/link/tramadol/5_pharma3.html><IMG>http://imgwebsearch.com/35384/img0/tramadol/5_pharma3.png</IMG></a>
Tramadol is a synthetic stripped-down piperidine-analog of the phenantherane alkaloid codeine and, as such, is an opioid and also a pro-drug (codeine is metabolized to morphine, tramadol is converted to M-1 aka O-desmethyltramadol). Opioids are chemical compounds which act upon one or more of the human opiate receptors (the euphoria, addictive nature and respiratory depression are mainly caused by the Mu(?) 1 and 2 receptor. The opioid agonistic effect of Tramadol and its major metabolite(s) are almost exclusively mediated by the substance's action at the ?-opioid receptor. This characteristic distinguishes tramadol from many other substances (including morphine) of the opioid drug class, which generally do not possess tramadol's degree of subtype selectivity.
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- 2010/03/12(金) 22:15 -