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Pavatym

《英文msh詞典》Pavatym
[入口詞] Pavatym
[主題詞] Papaverine
[藥動學] Vasodilator Agents
[英文釋義] An alkaloid found in opium but not closely related to the other opium alkaloids in its structure or pharmacological actions. It is a direct-acting smooth muscle relaxant used in the treatment of impotence and as a vasodilator,especially for cerebral vasodilation. The mechanism of its pharmacological actions is not clear,but it apparently can inhibit phosphodiesterases and it may have direct actions on calcium channels.