What causes stomach pain after drinking coffee?

Generally, stomach pain after drinking coffee may be related to excessive consumption, reflux gastritis, atrophic gastritis, gastritis, or gastric ulcers. Patients should seek timely medical evaluation at a正规 hospital and receive appropriate treatment based on the specific condition. Detailed analysis is as follows:

1. Excessive Consumption

Coffee contains a certain amount of caffeine. Drinking too much may stimulate the gastric lining and increase the risk of stomach pain. In such cases, it is recommended to drink more warm water to help alleviate discomfort.

2. Reflux Gastritis

Reflux gastritis is inflammation caused by stomach acid flowing back into the esophagus, which may result from esophageal sphincter relaxation, excessive stomach acid, or delayed gastric emptying. Coffee can increase gastric acid secretion, potentially worsening reflux gastritis and causing stomach pain. Under medical guidance, patients may use medications such as omeprazole enteric-coated capsules, lansoprazole enteric-coated tablets, or rabeprazole sodium enteric-coated tablets.

3. Atrophic Gastritis

Atrophic gastritis involves inflammation due to atrophy and metaplasia of the gastric mucosa, often accompanied by reduced gastric acid production. The acidic components in coffee may further irritate the gastric mucosa, leading to symptoms such as stomach pain and diarrhea. Patients may take domperidone tablets, cisapride tablets, or sucralfate tablets as directed by a physician.

4. Chronic Gastritis

Chronic gastritis refers to persistent inflammation of the gastric mucosa, which may be caused by infections, improper diet, or medication use. Acidic components in coffee may irritate the gastric lining, exacerbating gastritis symptoms and causing stomach pain. As prescribed by a doctor, patients may take medications such as smectite powder, Xiangsha Yangwei granules, or amoxicillin capsules.

5. Gastric Ulcer

A gastric ulcer is a sore in the stomach lining, possibly caused by infection (e.g., *Helicobacter pylori*), use of nonsteroidal anti-inflammatory drugs (NSAIDs), or dietary factors. The acidic components and caffeine in coffee may irritate the ulcer site, leading to stomach pain. Under medical supervision, patients may use colloidal bismuth pectin capsules, Weinaian capsules, or domperidone tablets for treatment.

In daily life, it is important to avoid spicy, irritating, raw, cold, or hard foods. A light and easily digestible diet is recommended. If symptoms persist or worsen, prompt medical consultation and diagnostic evaluation are advised.