The effects of sand nuts are warming the spleen to stop diarrhea (relieving diarrhea by warming the spleen), regulating qi to calm the fetus, resolving dampness to open the stomach (normalizing gastrointestinal function by removing dampness), and not obviously harmful to the kidneys. The Chinese medicine sand nut is the dried mature fruit of Yangchun sand, green-shelled sand or Hainan sand of the ginger family, which is mainly distributed in Guangdong, Guangxi, Yunnan and other places. It is warm in nature, pungent in taste, and belongs to the spleen, stomach and kidney meridians. Its effects are to warm the spleen and stop diarrhea, regulate qi and stabilize the fetus, and dissolve dampness and open the stomach. There are no authoritative studies showing that sand nuts can have adverse effects on the kidney. Sand nuts can be used to treat dampness and obstruction in the middle of the body, epigastric (abdominal) congestion), and stagnation of qi in the spleen and stomach. Sand nuts can also warm the middle Jiao, strengthen the spleen, stop vomiting and stop diarrhea, and can be used to treat vomiting and nausea, cold dampness and cold diarrhea. This product can move qi, harmonize the middle and pacify the fetus, and can be used to treat malignant obstruction of pregnancy (early pregnancy, severe nausea and vomiting, dizziness and anorexia, or even vomiting after eating), and restlessness of the fetus. It is important to note that sand nuts should be used with caution for people with yin deficiency and blood dryness (deficiency of yin fluid, dryness and heat in the blood) and fire-heat within the body. The damage to the kidneys caused by sand nuts is not obvious, but it needs to be used under the guidance of a doctor and not on its own.