Famotidine can be used for the treatment of acute gastric mucosal lesions, peptic ulcer, reflux esophagitis and other diseases, as well as a certain degree of protection against ulcers, with the effect of inhibiting the secretion of gastric acid and pepsin. Adverse reactions such as hemolytic anemia, jaundice, facial edema, constipation and general fatigue may occur after the use of the drug. Caution should be exercised in heart disease, liver and renal insufficiency, as well as infants and young children, and a doctor should be consulted when combining this product with antifungal drugs so as not to affect the therapeutic effect. Patients with severe renal insufficiency, pregnant women, lactating women and those who are allergic to this product are prohibited. If you want to know the role and efficacy of Famotidine, it is recommended to go to a regular hospital to consult a doctor, and under the guidance of the doctor to use the drug, do not unauthorized use of drugs.