<prompt> The anti-malarial drugs effective in preerythrocytic phase in liver are -ProguanilChloroquinePyrimethamineQuinine  <response>: Ans. is a i.e., Proguanil o The pre-erythrocytic phase in Liver is targeted for causal prophylaxis. o Drugs acting on pre-erythrocytic cycle ? Proguanil Primarily for falciparum. Primaquine --- For all species. 