Salicin is a component extracted from the bark of white willow and used for various purposes in medicine. The herb itself has a long history and has been used for centuries on end. Modern herbalists continue to recommend the white willow bark for joint and muscle comfort enhancement. This product has yet another key advantage – since it is an herb, it does not irritate the stomach unlike synthetic medicines. Our new formula contains 25% extract of salicin extracted from white willow bark, a dose 10% higher than our original formula, for even better results.