9 doctors weighed in:

How long it takes Zantac (ranitidine) to work for gastritis?

9 doctors weighed in
Dr. Michael Jones
Family Medicine
6 doctors agree

In brief: 1 hour

Or less if it's gonna work.

In brief: 1 hour

Or less if it's gonna work.
Dr. Michael Jones
Dr. Michael Jones
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Dr. Charles Cattano
Internal Medicine - Gastroenterology
4 doctors agree

In brief: 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.

In brief: 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.
Dr. Charles Cattano
Dr. Charles Cattano
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Dr. Gregg Albers
Addiction Medicine
2 doctors agree

In brief: 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.

In brief: 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.
Dr. Gregg Albers
Dr. Gregg Albers
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