Chemicals and Drugs [D] » Heterocyclic Compounds [D03] » Alkaloids » Benzylisoquinolines » Papaverine
Chemicals and Drugs [D] » Heterocyclic Compounds [D03] » Alkaloids » Opiate Alkaloids » Papaverine
Chemicals and Drugs [D] » Heterocyclic Compounds [D03] » Heterocyclic Compounds, Fused-Ring » Heterocyclic Compounds, 2-Ring » Isoquinolines » Benzylisoquinolines » Papaverine
Description
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. MeSH
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