Artemisinin is a natural product, extracted from Artemisia annua L.It acts as a blood schizontocide and therefore kills malaria parasites. When used for the treatment of tertian fever, it is better than chloroquine is terms of time to suppress the pathogen. No adverse effect in clinical cases, esp. useful for the treatment of cases resistant to chhloroquine. However, the short term recurrence rate is higher than chloroquine