Baohe Wan (Chinese: 保和丸) is a greyish-brown, slightly sour and astringent pill used in Traditional Chinese medicine to "stimulate digestion, remove retained food and regulate the stomach function". It is used in cases where there is "retention of undigested food with epigastric and abdominal distension, foul belching, acid regurgitation and loss of appetite".
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Baohe Wan Wikipedia(Text) CC BY-SA