Gastritis Support Group
Gastritis is a medical term for inflammation of the lining of the stomach. It means that white blood cells move into the wall of the stomach as a response to some type of injury. Gastritis has many underlying causes, from infection with the bacterium H. pylori, bile reflux, or excessive consumption of alcohol or certain foods or drugs like aspirin.

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As for Ganaton...
https://en.wikipedia.org/wiki/Itopride
It has potential adverse reactions listed.
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All in all, be more specific in your question.