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Sylvia Saint - Posing on Couch


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The mechanism of action of tramadol has yet to be fully elucidated, but it is believed to work through modulation of the GABAergic, noradrenergic and serotonergic systems. The contribution of non-opioid activity is demonstrated by the analgesic effects of tramadol not being fully antagonised by the Oj-opioid receptor antagonist naloxone.