Patients with a bad stomach, you can use sand nuts, dendrobium, hedgehog and other medicines in water under the guidance of the doctor, but the effect of medicines in water is limited, usually not up to the therapeutic effect. It is recommended to follow the doctor’s instructions for medication. 1. Sand nut: has the effect of transforming dampness and moving qi, warming the middle and stopping diarrhea, and stabilizing the fetus. It can be used for treating stagnant spleen and stomach qi, dampness obstructing the middle jiao (dampness obstructing the function of the spleen and stomach), coldness of the spleen and stomach (spleen and stomach weak and cold), vomiting and diarrhea, and restlessness of the fetus. Yin deficiency and blood dryness (deficiency of yin fluid, blood dryness and heat), fire and internal heat should be used with caution. 2. Dendrobium: It has the effects of benefiting the stomach and generating fluids (nourishing the stomach by replenishing the fluids in the stomach), nourishing yin and clearing heat (nourishing the yin essence and clearing heat). It is mainly used for treating stomach yin deficiency, heat disease and injury to the body fluid, and kidney yin deficiency. It is forbidden to be taken by those who have not injured the yin in the early stage of warm-heat disease, those who have not been transformed into dryness by damp-warm disease (warm disease caused by feeling dampness and heat), and those who have deficiency of cold in the spleen and stomach (spleen and stomach weakness and coldness). 3. Citrus aurantium: It has the effect of breaking gas and eliminating stagnation, resolving phlegm and removing lumps. It is used for treating gastrointestinal stagnation, damp-heat diarrhea (diarrhea caused by feeling damp-heat), chest paralysis (stuffy pain in the chest), knotting of the chest, stagnation of qi in the chest and chest coils (chest and ribs), and post-partum abdominal pain. Caution should be exercised when the spleen and stomach are weak and pregnant women. If there is any discomfort after drinking the above medicines in water, it is recommended to stop using them and consult a doctor promptly.