... 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.[] ... Americans are thought to have used ground willow bark and bark steeped for tea as a medicinal remedy for everything ...