Indigestion is a problem that has no specific reason behind its occurrence and takes place due to irregular or improper food habits. This is a condition when the stomach starts releasing excess acid. In general, it is expected that the stomach will release acid because the food is broken with the acid realized here but excess of anything is not good. When this situation takes place the problem arises. The common symptoms of indigestion are stomach ache, irritation in the stomach, pain, etc, and the common causes are smoking, drinking, insufficient water intake, etc.