How do you get gastritis?

Inflammation of the stomach.

There are many. Most try to decrease stomach acid. Some are calledd H2 blockers since they block a type of histamine, one example of this is Zantac. Others are PPI or proton pump inhibitors, such as...

most doctors suggest not eating greesy or spicy foods for a while.

In the 1990s, scientists discovered that the main cause of true gastritis is infection from a bacterium called Helicobacter pylori (H. pylori).

Simple gastritis can be cured by a course of PPI e.g. omeprazole or H2 receptor antagonists e.g. ranitidine.