Dong Quai extract is a female tonic in traditional Chinese medicine. It has been used successfully to alleviate PMS (premenstrual syndrome) and menopausal symptoms (Hardy 2000). Dong Quai extract has been shown to have a muscle relaxant effect and has been used as an analgesic and anti-inflammatory agent. Scientists believe that one mechanism of action of Dong Quai is to promote natural progesterone synthesis.
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