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A combination preparation of propoxyphene napsylate and acetaminophen, with analgesic and antipyretic activities. Propoxyphene napsylate is a mild narcotic analgesic that binds to mu-opioid receptors in the central nervous system (CNS), thereby mimicking the effect of endogenous opioids. Acetaminophen possesses analgesic and antipyretic effects by interfering with prostaglandin synthesis.
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