Salix alba (white willow; willow bark ) extract, Salicin,acesodyne, salicylic acid, allay fever, diminish inflammation, Salix alba (white willow; willow bark ) extract ,Ingredient: Salicin; Salicylic acid .Function: acesodyne,, allay fever, diminish inflammation,a ... a . The active extract of the bark, called , after the Latin name Salix, was isolated to its crystalline form in 1828 by , a French ...