Indigestion is basically a stomach upset that usually results when people eat too much or eat some particular food which dont agrees with them. If a proper treatment is not applied a person may have a more serious digestive disorder. The most common causes of the indigestion are eating fast, significant caffeine intake, eating fatty or greasy food, overindulgence in alcohol, tobacco smoking and tobacco chewing, eating spicy foods, emotional nervousness, inflammation of the gall bladder stomach and pancreas, duodenal ulcer, gastric ulcer, drugs such as antibiotics, aspirin and nonsteroidal "anti-inflammatory" drugs. Indigestion symptoms changes noticeably these includes belching, bloating, nausea, acidity, food coming up, excessive wind, stomach pain, bitter taste in the mouth, feeling of discomfortness and finally all these symptoms may worsened by anxiety and depression.