The recommended duration of artesunate therapy for treating malaria varies depending on the severity of the disease and the type of malaria parasite. According to the World Health Organization (WHO), artesunate should be given for 3 to 7 days, with a duration of 7 days generally recommended for severe and complicated malaria cases [1].

The Malaria Treatment Guidelines published by the Centers for Disease Control and Prevention (CDC) recommend that adults and children with severe malaria be treated for 7 days with artesunate, while those with uncomplicated malaria be treated for 3 to 7 days [2].

It is essential to follow the local treatment guidelines and consult with a healthcare professional for the most up-to-date information on the recommended duration of artesunate therapy.

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References:

[1] World Health Organization. (2019). Guidelines for the treatment of malaria.

[2] Centers for Disease Control and Prevention. (2020). Malaria treatment guidelines for adults and children.

Sources:
1. https://www.who.int/news-room/q-and-a/detail/malaria
2. https://www.cdc.gov/malaria/travelers/drugs/artinup.html