DESC: 100 Mg White Willow Extract Per Capsule Standardized For 15% Salicin. The highest quality, most potent and most effective form of white willow bark extract available. Standardized at the highest concentration of naturally-balanced active principles while retaining and enhancing all the whole-plant synergistic benefits. One of the world's finest and purest plant extracts. Faster-acting and more assimilable than ordinary white willow.