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Famotidine Dosing for GERD
The recommended dosage of famotidine for treating gastroesophageal reflux disease (GERD) in adults is famotidine 20 mg, taken twice daily for up to six weeks. For people with esophagitis (damage to the esophagus) due to GERD, the recommended dose is famotidine 20 mg or 40 mg, taken twice daily for up to 12 weeks.
Famotidine Dosing for Pathological Hypersecretory Conditions
The recommended famotidine dosage for pathological hypersecretory conditions (such as Zollinger-Ellison syndrome) is 20 mg to 160 mg, taken every six hours, depending on the severity of the condition.
The following sections explain the dosing guidelines when famotidine is used to treat conditions affecting the digestive tract in infants and children.
Famotidine Dosing for Ulcers in Children
For children ages 1 to 16, the recommended famotidine dosage for treating ulcers is 0.5 mg per kg per day (about 0.23 mg per pound per day), either given twice a day or once a day at bedtime, up to a maximum dose of 40 mg per day. Famotidine is not approved to treat ulcers in children less than 12 months old.
Famotidine Dosing for GERD in Infants and Children
For infants, the recommended famotidine dose for treating GERD is 0.5 mg per kg (about 0.23 mg per pound), either once daily (for infants less than three months old) or twice daily (for infants 3 months to 12 months old).
For children ages 1 to 16, the recommended dose for treating GERD is 0.5 mg per kg (about 0.23 mg per pound), taken twice daily, up to a maximum of 40 mg twice a day.
For adults and children ages 12 and over, over-the-counter famotidine can be used to prevent heartburn or indigestion when taken 10 to 60 minutes before a meal. It can also help relieve symptoms once they occur. No matter what strength is used (10 mg or 20 mg), no more than two tablets should be taken in 24 hours.