... 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 extracted from willow bark that could ease aches and pains and reduce fevers ... ). Native Americans are thought to have used ground willow bark and bark steeped for tea as a medicinal ...