Famotidine action and efficacy for the treatment of peptic ulcer disease, stress ulcer, acute gastric mucosal bleeding, gastrinoma, and reflux esophagitis. As an antacid, Famotidine is available in tablets, dispersible tablets, granules capsules, etc. It can inhibit the secretion of gastric acid and is used in peptic ulcer diseases such as gastroduodenal ulcer, stress ulcer, acute gastric mucosal bleeding, gastrinoma and reflux esophagitis. Adverse reactions to the drug include dry mouth, dizziness, headache, insomnia, rash, facial flushing, leukopenia, urticaria, constipation, diarrhea, allergic reactions, high fever, and increased blood pressure. Allergic to the product, severe renal insufficiency and pregnant and lactating women are prohibited. Patients with a light diet during the use of drugs, do not eat spicy greasy, stimulating, cold food, do not smoke and drink, pay attention to rest, appropriate exercise, enhance the body’s ability to resist disease. The application of drugs need to strictly follow the doctor’s instructions, not self-medication.