Sulfadoxine (Sulphadoxine) is an antibiotic in the Sulfonamide family. It is primarily used in combination with Pyrimethamine for the treatment of malaria.
Sulfadoxine is rarely used as a treatment for acne. There is minimal clinical research or laboratory testing on the utility of Sulfadoxine as an acne treatment. Laboratory testing indicates that the acne-causing P. acnes bacterium is tends to be moderately sensitive to Sulfonamide family antibiotics, such as Sulfadoxine.
For the treatment of active acne symptoms, other Sulfonamide family antibiotics (eg. Sulfamethoxazole, Dapsone. Sulfadiazine) are more commonly prescribed.