sentences:  Dihydroartemisinin is used to treat malaria, generally as a combination drug with piperaquine.In a systematic review of randomized controlled trials, both dihydroartemisinin-piperaquine and artemether-lumefantrine are very effective at treating malaria (high quality evidence).However, dihydroartemisinin-piperaquine cures slightly more patients than artemether-lumefantrine, and it also prevents further malaria infections for longer after treatment (high quality evidence).