| The natural presence of hypericin, which gives it its red colour, can however make it photo-sensitive. |
| Also St John's Wort contains hypericin which mimics the mood-boosting chemical seratonin in the brain and can treat mild anxiety and fatigue. |
| The transfer of one electron from an electron donor to an excited state of hypericin generates its corresponding semiquinone radical anion. |
| Use of hypericin or pseudohypericin for the preparation of a pharmaceutical composition useful in the treatment of viral infections. |
| St.John's Wort contains hypericin, which inhibits monoamine oxidase, a chemical associated with depression. |
| In addition to its photodynamic properties, hypericin is also hydrophobic and binds to a variety of cell and enveloped virus membranes. |
