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Summary A patient who suffers from premenstrual dysphoric disorder (PMDD) insisted on treatment with St. Johns Wort (SJW). She agreed to random assignment to either placebo or SJW for three months. She took placebo for the first month and SJW for the second month of her menstrual cycle. A rash developed within two weeks of treatment with SJW. Plant extracts such as SJW contain multiple organic compounds...
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