Siwu Tang Wan (simplified Chinese: 四物汤丸; traditional Chinese: 四物湯丸) is a brownish-black pill used in traditional Chinese medicine to "normalize menstruation and enrich blood". It is aromatic and tastes slightly sweet and bitter. It is used where there is "deficiency of blood, and irregular menstruation". The name Siwu Tang Wan literally means Pill of Four Substances in Chinese.
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Siwu Tang Wan Wikipedia(Text) CC BY-SA