Green tea

The numerous possible health advantages of green tea have been the subject of much investigation. In the past, it was employed as a natural treatment for diarrhea and Helicobacter pylori infection, a bacterial strain that can result in nausea, bloating, and stomach pain. It could also cure other gastric problems. Green tea, for instance, was found to considerably lessen the frequency and severity of diarrhea brought on by radiation therapy in research involving 42 individuals.

Green tea and its constituents have also been demonstrated in animal tests to be effective in treating stomach ulcers, which can result in discomfort, gas, and indigestion. Remember that it's recommended to limit your consumption to 1-2 cups (240-475 ml) each day because, strangely, drinking more than that might cause negative effects like nausea and upset stomach owing to the high caffeine concentration.