Why does drinking kudzu root cause stomach upset?

　　"Upset stomach" usually refers to diarrhea. In general, the main causes of diarrhea after consuming kudzu root include its naturally cooling properties irritating the gastrointestinal tract, excessive consumption of kudzu root, acute gastroenteritis, irritable bowel syndrome (IBS), and ulcerative colitis. If discomfort occurs, it is recommended to seek timely medical evaluation and treatment at a正规 hospital. Detailed explanations are as follows:

　　1. Cooling nature of kudzu root irritating the gastrointestinal tract

　　Kudzu root has a cold nature. For individuals with a weak or cold gastrointestinal system, consuming it may lead to irritation of the gastrointestinal mucosa due to its cooling effect, accelerating intestinal motility and causing diarrhea. To prevent this, reduce the amount consumed, cook it with warming ingredients such as ginger and red dates, and avoid taking kudzu root on an empty stomach.

　　2. Excessive consumption of kudzu root

　　Consuming large amounts of kudzu root in a short period can overwhelm the digestive system, as the dietary fiber and starch content exceeds the gastrointestinal tract’s digestive capacity, increasing gastrointestinal burden and leading to diarrhea. Control portion sizes, consume small amounts initially, gradually adjust intake based on tolerance, and drink plenty of warm water during this time.

　　3. Acute gastroenteritis

　　If the kudzu root consumed is contaminated with bacteria, these pathogens can irritate the gastrointestinal mucosa, triggering inflammation, mucosal congestion, edema, and gastrointestinal dysfunction, resulting in diarrhea. Under medical guidance, medications such as norfloxacin capsules, berberine hydrochloride tablets, or montmorillonite powder may be used. The diet should consist mainly of light, liquid foods.

　　4. Irritable bowel syndrome (IBS)

　　Abnormal gastrointestinal motility and increased intestinal sensitivity may cause intestinal spasms when stimulated by kudzu root, leading to diarrhea often accompanied by abdominal pain. Under medical supervision, medications such as trimebutine maleate tablets, bifidobacterium triple viable capsules, or pinaverium bromide tablets may be prescribed. Avoid spicy, raw, or cold foods.

　　5. Ulcerative colitis

　　When ulcers are present in the intestinal mucosa, kudzu root can irritate these ulcerated areas, exacerbating inflammatory responses and impairing intestinal absorption, which leads to diarrhea, often with mucus and bloody stools. Under medical guidance, drugs such as mesalazine enteric-coated tablets, sulfasalazine enteric-coated tablets, or prednisolone tablets may be administered. In severe cases, total colectomy may be required, followed by careful postoperative dietary management.

　　In daily life, ensure kudzu root is fresh before consumption; control intake according to individual gastrointestinal health—those with cold or weak digestion should combine it with warming ingredients; maintain good dietary hygiene to avoid contaminated food; and undergo regular gastrointestinal check-ups to detect intestinal diseases early.