A 24-year-old male asked:
how long it takes zantac (ranitidine) to work for gastritis?
3 doctor answers
A Verified Doctor answered
A US doctor answered Learn more
1 hour : Or less if it's gonna work.
Answered on Sep 28, 2016
Dr. Charles Cattano answered
38 years experience Gastroenterology
Zantac (ranitidine) dosedependent: Zantac (ranitidine) in doses less than 100mg (otc dosing is 75mg) effectively inhibits basal and nighttime acid output by the stomach. However, food-stimulated acid production is more difficult to suppress and needs bigger doses. Prescription-strength doses of Zantac (ranitidine) are 150-300mg twice daily. So, if a little Zantac (ranitidine) doesn't "work for gastritis" symptoms, ask your doctor to up the dose or switch medication.
Answered on Aug 25, 2018
Dr. Gregg Albers answered
40 years experience Addiction Medicine
Depends: Depends on the source and severity of the gastritis. Chronic damage from alcohol use will cause more severe damage that may or may not get better with zantac (ranitidine). Those with gastritis and ulcers will need stronger medication for days to weeks to get rid of the symptoms. Mild gastritis due to increased acid may be improved in a shorter period of time with zantac (ranitidine), 1-2 hours likely.
Answered on Jan 5, 2018
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