The acetylsalicylic acid in aspirin shares the pain relief properties of the chemical salicin in willow bark.
Stone's paper describes his discovery by testing on himself and 50 members of his parish that ground willow bark powder relieves fevers and rheumatic pain.
Main products include 's wort P.E., epimedium P.E., wWolfberry P.E., white willow bark P.E., hawthorn leaf P.E., rhodiola P.E., red clover P.E., and angelica P.E.
