how often can you take a zantac?
For heartburn: The typical dose is 75 to 150 mg once daily or twice daily, taken 30 to 60 minutes before a meal or beverage that can cause heartburn. For erosive esophagitis: The typical dose is 150 mg, four times a day. For Zollinger-Ellison syndrome: The typical dose can be as high as 6 grams (g) a day.