ALT is the abbreviation for glutamic aminotransferase, which is mildly elevated in patients with fatty liver, rising more than 2 times and less than 10 times the upper limit of normal. Most patients with fatty liver have elevated ALT between 120-400u/L, but few have more than 400u/L. Elevated ALT in fatty liver is considered to be liver damage, and can be treated by diet and exercise, as well as liver protection and enzyme-lowering drugs, such as silymarin, compound glycopyrrolate, diammonium glycyrrhizate, and reduced glutathione.