Peptic ulcers, also known as stomach ulcers, are very common and affect millions of people all over the world. These ulcers are caused by a lot of things, such as bacterium, improper use of medicines, aspirin, too much alcohol and smoking, and bad lifestyle habits. These ulcers cause injuries on the lining of the stomach or of the intestines due to increased amounts of stomach acid and can cause a lot of pain to those who suffer from them.