genus of perennial plants in the family clusiaceae (sometimes classified as hypericaceae). herbal and homeopathic preparations are used for depression, neuralgias, and a variety of other conditions. hypericum contains flavonoids; glycosides; mucilage, tannins; volatile oils ( oils, essential), hypericin and hyperforin. tsca definition 2008: extractives and their physically modified derivatives. hypericum perforatum, guttiferae.
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