... constringency, an astringent, Control arthritis discomforts. Some arthritis sufferers taking white willow bark have experienced reduced swelling and inflammation, and eventually increased mobility ... the back, knees, hips, and other joints.COATechnical SpecificationProduct NameWhite Willow Bark P.EBotanical SourceSalix alba L.Part usedBarkCountry Of OriginChinaItemsSpecificationsSalicin (HPLC ...