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Zantac Dosage

The Zantac dosage healthcare providers often recommend for treating adults with certain types of ulcers, GERD, or pathological hypersecretory conditions is 150 mg twice a day. The dose of Zantac healthcare providers often recommend for adults with erosive esophagitis is 150 mg four times a day. To prevent ulcers and erosive esophagitis from occurring again after the condition heals, the Zantac dosage is typically 150 mg once or twice daily.

 

Zantac Dosing: An Overview

The dose of Zantac® (ranitidine hydrochloride) that your healthcare provider recommends will vary depending on a number of factors, including:
 
  • Your age
  • The medical condition for which you are being treated
  • Other medical conditions you may have
  • Other medications you may be taking.
     
As is always the case, do not adjust your dose unless your healthcare provider specifically instructs you to do so.
 

Zantac Dosage Information for Adults

 
Zantac Dosing for Duodenal Ulcers
When treating a duodenal ulcer, the recommended Zantac dosage is usually
 Zantac 150 mg twice daily or Zantac 300 mg once daily in the evening. After the ulcer is healed, the dose to prevent future ulcers is typically Zantac 150 mg once daily at bedtime.
 
Zantac Dosing for Stomach Ulcers
For treating a stomach ulcer, the dose of Zantac doctors often recommend is Zantac 150 mg twice daily. After the ulcer has healed, the dose to prevent ulcers from returning is typically Zantac 150 mg once daily at bedtime.
 
Zantac Dosing for GERD (Gastroesophageal Reflux Disease)
The dosage of Zantac used to treat GERD is typically Zantac 150 mg twice daily.
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Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;