... (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 bitter powder ... which are similar in structure to aspirin (acetyl salicylic acid). Native Americans are thought to have used ...