Hypericum Perforatum Extract Details Product Name: Hypericum Perforatum Extract / St. John’s Wort Extract   Herb Source: Hypericum perforatum L  Part Used: Whole Herb  Active Ingredient: Hypericin, Hyperforin  Appearance: Brown Fine Powder  Specification: 0.3% Hypericin  Test Method: HPLC  CAS#: 548-04-9 Structural Formula： What Is Hypericum Perforatum Extract? St. John’s wort (hypericum perforatum) is a herbal medicine that is used to treat symptoms of …