<prompt> Which of the following antimalarial is a slow acting schizonticide-AemetherMefloquinePyrimethamineQuinine  <response>: Ans. is c i.e., Pyrimethamine o Antimalarials that act on erythrocytic phase of schizogony are called erythrocytic schizontocides. The available drugs can be divided into ? 1. Fast acting - Chloroquine, amodiaquine, quinine, mefloquine, halofantrine, lumefantrine, atovaquone, aemisinin. 2. Slow acting - Pyrimethamine, Proguanil, sulfonamides, tetracyclines. 