Lumefantrine is an antimalarial medication commonly used in combination with artemether to treat uncomplicated malaria caused by the Plasmodium parasites. It works by inhibiting the growth of the parasites in the blood, helping to reduce symptoms and clear the infection. This medication is typically taken orally in tablet form and is most effective when used as part of a complete treatment regimen. Patients are advised to take it with food to enhance absorption. Like all medications, lumefantrine may have side effects, and it is important to follow a healthcare provider's instructions when using it.