title: St. John's wort extract found not helpful for hepatitis C.
mesh_terms: D000328:Adult; D005260:Female; D006526:Hepatitis C / Q000188:drug therapy*; D006801:Humans; D020902:Hypericum / Q000009:adverse effects / Q000627:therapeutic use*; D008111:Liver Function Tests; D008297:Male; D010787:Photosensitivity Disorders / Q000139:chemically induced; D008517:Phytotherapy; D010936:Plant Extracts / Q000009:adverse effects / Q000627:therapeutic use*; D010946:Plants, Medicinal; D019562:Viral Load
chemical_list: D010936:Plant Extracts