White Willow Bark Extract White Willow Bark PE 
 Plant Source: willow white willow plants (Salix alba L.) skin 
 English name: White Willow Bark PE 
 Ingredients: Salicin Salicin 
 Molecular formula and molecular weight: C13H18O7; 286.27 
 Specifications: 15%, 25%, 30%, 50% 
 Appearance: brown powder 
 Test Method: HPLC 
 ACTION: Salicin in the body after oral administration hydrolysis, oxidation becomes salicylic alcohol, salicylic acid, it is antipyretic, analgesic, anti-rheumatic effect. 4-10% of a local anesthetic solution, there are bitter stomachic effect.