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 …