Use Famotidine is used for gastric and duodenal ulcers (treatment and prevention of exacerbations), symptomatic ulcers, erosive gastroduodenitis, reflux esophagitis, Zollinger-Ellison syndrome. It is also used for the prevention of aspiration of gastric juice during operations under general anesthesia (Mendelson's syndrome) and systemic mastocytosis. How to take Taken orally. - For treatment: usually 10-20 mg twice a day or 40 mg once a day. If necessary, the daily dose can be increased to 80-160 mg. - For prevention: 20 mg once a day before bedtime. - If creatinine clearance is less than 30 ml/min or serum creatinine concentration is more than 3 mg/dl, the dose is recommended to be reduced to 20 mg/day. Contraindications - Pregnancy. - Lactation period (breastfeeding). - Children's age (with caution or contraindicated, depending on the specific drug and age). Used with caution in case of impaired liver and kidney function. Storage Store in a dry, dark place at a temperature of 15degree to 25degreeC. Keep out of reach of children.