Artemether is an antimalarial medication derived from the Artemisia annua plant, commonly known as sweet wormwood. It is primarily used to treat malaria, particularly the severe forms caused by the Plasmodium falciparum parasite. Artemether works by disrupting the life cycle of the parasite, leading to its death and helping to alleviate symptoms of the disease. This medication is often administered in combination with other antimalarial drugs to enhance its effectiveness and reduce the risk of resistance. Artemether is typically given as an injection or in oral form, depending on the severity of the malaria infection and the patient's condition.