bbrma,
荳蔻膏 works very well with tummy ache. My son's tummy hurt so bad last time in the middle of the night. I was going to the Emergency with him. My helper tried putting on 荳蔻膏. Then he had the longest and loudest "fart" and then the pain is gone. The one from Singaport 牛車水 works the best.
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