Tebuquine is an antimalarial agent. Tebuquine is active against P. falciparum in vitro. Tebuquine in vitro shows a chloroquine-like effect, but not in vivo, suggesting that its mode of action in vivo is different from that of chloroquine. Tebuquine has no action in the CIPC in vitro and affects primarily mitochondria of the parasites in vivo. It probably acts through a metabolite. Both pre-erythrocytic and erythrocytic stages of rodent malaria parasites are affected by Tebuquine.