What medicine should I take for stomach pain and diarrhea?

Generally, the main causes of abdominal pain and diarrhea include cold abdomen, improper diet, acute gastroenteritis, irritable bowel syndrome (IBS), bacterial dysentery, etc. Patients should follow medical advice to select appropriate medications such as montmorillonite powder, berberine hydrochloride tablets, or bifidobacterium quadruple viable bacteria tablets based on specific conditions. Detailed analysis is as follows:

1. Cold Abdomen

When the abdomen is exposed to a cold environment, the intestinal smooth muscles may spasm and contract due to stimulation, increasing intestinal motility and leading to abdominal pain and diarrhea, often accompanied by a cold sensation in the abdomen. Applying a hot water bottle to warm the abdomen can help relieve spasms. Alternatively, patients may take belladonna tablets under medical guidance to relax intestinal smooth muscles and reduce pain and diarrhea.

2. Improper Diet

Consuming excessive raw, cold, greasy, or spoiled food can irritate the gastrointestinal mucosa and disrupt digestive function, resulting in abdominal pain and diarrhea, possibly accompanied by nausea. Montmorillonite powder may be taken under medical supervision to adsorb harmful substances in the intestine and protect the mucosa. It can be combined with multienzyme tablets to aid digestion.

3. Acute Gastroenteritis

Acute gastroenteritis caused by bacterial or viral infection leads to inflammation of the gastrointestinal mucosa, causing congestion, edema, and increased secretions, which result in abdominal pain and diarrhea, often accompanied by vomiting and fever. Under medical guidance, medications such as berberine hydrochloride tablets, norfloxacin capsules, and oral rehydration salts III may be used to inhibit pathogens and replenish fluids and electrolytes.

4. Irritable Bowel Syndrome (IBS)

Factors such as stress and anxiety may trigger IBS, causing intestinal dysfunction, abdominal pain, and diarrhea; pain often improves after defecation. Under medical supervision, medications such as bifidobacterium quadruple viable bacteria tablets and pinaverium bromide tablets may be prescribed to regulate gut microbiota and relieve intestinal smooth muscle spasms.

5. Bacterial Dysentery

Bacterial dysentery caused by *Shigella* infection results in bacterial invasion of the intestinal mucosa, leading to inflammation and ulcers, manifesting as abdominal pain and diarrhea, often accompanied by mucus, pus, bloody stools, and fever. Under medical guidance, antibiotics such as levofloxacin tablets or ceftriaxone sodium tablets may be prescribed to eliminate bacteria and control infection.

In daily life, it's important to keep the abdomen warm and avoid exposure to cold; maintain a light, hygienic diet and avoid spoiled food; stay emotionally balanced and minimize stress; drink plenty of fluids during episodes of diarrhea to prevent dehydration and reduce the likelihood of abdominal pain and diarrhea.