October 13, 2015
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"According to the World Health Organization, in 2010, malaria caused an estimated 219 million illnesses and 660,000 deaths, mostly children under 5 years old in Africa. These numbers represent a 25% decrease in malaria deaths globally and a 33% re"...



Primaquine phosphate is an 8-amino-quinoline compound which eliminates tissue (exoerythrocytic) infection. Thereby, it prevents the development of the blood (erythrocytic) forms of the parasite which are responsible for relapses in vivax malaria. Primaquine phosphate is also active against gametocytes of Plasmodium falciparum.

Clinical Studies

Persons with acute attacks of vivax malaria, provoked by the release of erythrocytic forms of the parasite, respond readily to therapy, particularly to chloroquine phosphate. Primaquine eliminates tissue (exoerythrocytic) infection and prevents relapses in experimentally induced vivax malaria in human volunteers and in persons with naturally occurring infections and is a valuable adjunct to conventional therapy in vivax malaria.

Last reviewed on RxList: 4/30/2015
This monograph has been modified to include the generic and brand name in many instances.

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