Gastric Su Granules are recommended to be taken on an empty stomach half an hour before meals, but it is recommended to be taken half an hour after meals for those with more serious gastrointestinal symptoms. Gastric Su Granules have the effect of regulating qi, eliminating flatulence, harmonizing the stomach and relieving pain, and can be used to treat qi stagnation-type gastric epigastric pain. The symptoms of the stomach and epigastric distension and pain, and the two hypochondriacs, emotional depression and anger will be aggravated, belching (burp) or yiqi (fart) will be relieved. Poor defecation, chest tightness, poor appetite and chronic gastritis with the above symptoms. This drug is contraindicated in pregnant women. The drug is recommended to be taken on an empty stomach half an hour before meals, which can help the drug fully contact with the gastric mucosa and help the drug to be better absorbed; however, for patients with more serious gastrointestinal symptoms, taking the drug on an empty stomach may stimulate the gastrointestinal tract, resulting in aggravation of gastrointestinal discomforts, and therefore it can be taken half an hour after meals in such cases. After using the drug may appear dry mouth, noisy (stomach similar to hunger, emptiness with burning sensation) and other adverse reactions. Patients who need to use Gastric Sulphur Granules for treatment should take the medicine under the supervision of a doctor.