- pentaquine
- An antimalarial agent closely related chemically to pamaquine but less toxic and more effective; it is administered with quinine, the two drugs acting synergically; active against Plasmodium vivax infections.
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pen·ta·quine -.kwēn also pen·ta·quin -kwən n an antimalarial drug used esp. in the form of its pale yellow crystalline phosphate C18H27N3O·H3PO4
Medical dictionary. 2011.