Therapeutic uses:
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The only drug that used in prevention of relapse in P.vivax and ovale because it affects the dormant liver stage
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It has no effect on erythrocytic stage (not used in acute attack) n
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Prevent transmission of infection from human to mosquito by killing the gametocytes
Side effects:
- Haemolysis in G6PD deficiency ; test for G6PD
- Purities
- methaemoglobinemia manifested by cyanosis