There is no specific gastric drug. Commonly used gastric drugs include proton pump inhibitors, H2 receptor antagonists, gastric stimulants, gastric mucous membrane protectants, etc. 1. Proton pump inhibitors: commonly used drugs such as omeprazole, rabeprazole, etc., rapid onset of action, long-lasting effect, is the treatment of gastric disease of the commonly used drugs for acute and chronic gastritis, gastric ulcers, etc., short-term use of the common adverse reactions are mainly leukopenia, diarrhea, loss of appetite, headache, etc., long-term use of the secondary infection, osteoporosis, etc.. 2. H2 receptor antagonist: commonly used drugs are cimetidine, ranitidine, etc., the efficacy of the drug is easily affected by diet, inhibit gastric acid for a short period of time, often suitable for mild and moderate gastric ulcer. If the patient is older, abnormal renal function, etc., it is easy to appear adverse reactions, such as diarrhea, fatigue, constipation, etc.. 3. Gastric stimulants: commonly used drugs include domperidone, mosapride, etc., which can help gastric emptying and promote digestion, and can treat gastric emptying disorder, etc. However, there are some adverse reactions, such as abdominal pain and diarrhea. 4. Gastric mucosal protective agents: mainly magnesium aluminum carbonate, aluminum thiosulphate, etc., can quickly neutralize gastric acid, form a protective film on the surface of the gastric mucosa to prevent the invasion of harmful substances, which is conducive to the healing of the damaged mucosa, and can be used for the treatment of acute gastritis, gastric ulcers and so on. Adverse reactions are rare, can cause constipation, skin rash and so on. If you need to take stomach medicine, you need to follow the doctor’s instructions, do not use your own medication, so as not to delay the condition.