White willow bark is the bark of Salix alba L., a plant in the family Salicaceae, and its main active ingredient is salicin. Salicylic acid glycoside, also known as salidroside or salicylic acid, has various functions such as antibacterial, bactericidal, antioxidant, antipyretic, and analgesic. It is a good natural food additive and health food resource. White willow bark extract has been widely used in dietary supplements, medicinal ingredients, and cosmetics in regions such as the United States and the European Union....