Metformin is a prescription drug used primarily in the treatment of type II diabetes. It is intended to help control the amount of sugar in the blood, and can be used on its own or combined with other medications. In the United States, it is sold under the brand names Fortamet, Glucophage, Glumetza and Riomet. Metformin aims to decrease glucose production in the liver, consequently lowering the levels of glucose in the bloodstream. Metformin also designed to decrease the amount of glucose one absorbs from food, and increase the body’s response to insulin, which naturally controls glucose-levels in blood.