Hi, at first you need to identify what kind of food makes you upset and how can you avoid situations in which your stomach reacts in undesired way. It is recommended to drink ginger ale or chamomile or peppermint tea, for upset stomach symptoms. They will soothe your stomach. If you are having heartburn, take antacids. They can be purchased over the counter. Antacids act by neutralizing the acid in your stomach. The side effects include constipation or diarrhea if overused.
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