Stomach pain and bloating are treated well with cimetidine, aluminum hydroxide, and domperidone. Many people have stomach pain and bloating caused by the erosion of the gastric mucosa due to excessive secretion of stomach acid, so they need to use drugs that inhibit or neutralize stomach acid for improvement. Cimetidine can inhibit the secretion of gastric acid and reduce the erosion of gastric mucosa caused by gastric acid, and has the effect of eliminating pain in the stomach. Aluminum hydroxide can react with gastric acid when it enters the stomach to reduce the content of gastric acid. After the content of gastric acid is reduced, it will not corrode the gastric mucosa, so the symptoms of stomach pain and bloating can be eliminated after taking it. Some people have stomach pain and bloating due to the decrease of stomach peristaltic function and the lack of emptying of food in the stomach. They can be treated with drugs that promote gastric motility, such as domperidone, which can improve the function of the pyloric sphincter to promote gastric peristaltic movement and help empty the food in the stomach as soon as possible.