Clinical trial, with positive findings,  on 19 women with premenstrual syndrome and attending a gynaecology  outpatient clinic in Israel. Approximately half of the women were  randomly allocated to receive homeopathic medicine, and the others  received dummy medicine (placebo); they were not told which treatment  group they were in. After 3 months, relief of symptoms was reported by  90% of the women who received homeopathy compared to 37% of women who  received placebo.

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