Famsyn belongs to the group of digestive drugs, prepared in the form of 40mg tablets. The main ingredient of Famsyn 40mg is Famotidine, indicated in the treatment of gastric ulcers and gastroesophageal reflux. However, Famsyn can cause some unwanted side effects such as constipation, dizziness and headache... Therefore, patients should carefully study the information before using Famsyn.