Zantac Guidelines for Various Conditions, Children, and Infants
Zantac Dosing for Erosive Esophagitis
The dose of Zantac used for treating erosive esophagitis is usually Zantac 150 mg four times a day. Once healed, the dose for preventing it from returning is typically Zantac 150 mg twice daily.
Zantac Dosing for Pathological Hypersecretory Conditions
The Zantac dosage that doctors recommend for these conditions (such as Zollinger-Ellison syndrome) is usually Zantac 150 mg twice daily. If needed, the healthcare provider may increase the dose of Zantac for people with these conditions or recommend that they take it more frequently.
Zantac is approved for use in children and babies as young as one month old. The dosing of Zantac for children and babies is based on their weight.
Zantac Dosing for Ulcers
For the treatment of stomach ulcers or duodenal ulcers in children or babies, the recommended Zantac dosage is usually 2 mg to 4 mg per kg (a little less than 1 mg to 2 mg per pound) twice daily. The total amount per day should not exceed 300 mg (this is only an issue with larger children). For preventing ulcers from coming back once they are healed, the dose is 2 mg to 4 mg per kg (a little less than 1 mg to 2 mg per pound) once a day (no more than 150 mg per day).
Zantac Dosing for GERD or Erosive Esophagitis
For treating GERD or erosive esophagitis in children or babies, the dose is 5 mg to 10 mg per kg (a little less than 2.5 mg to 5 mg per pound) total per day. This is usually split up into two doses per day.
(Click Zantac for Babies for more information on using Zantac in young children.)