Plant original:Salix alba L. Specifications: 15%, 25%, 50%, 80%, ... When consumed, it is metabolized to salicylic acid.Salicin safely be taken long-term at recommended doses. ... gastrointestinal disorder.As with aspirin products, never give white willow bark to children or teenagers under age 16 with ... cold, the flu, or chicken pox. Although white willow bark is unlikely to cause the rare but potentially ...