Glumetza is a medication that belongs to a class of drugs called biguanides. It may be used alone, or with other medications like insulin to treat the type 2 diabetes condition. Type 2 diabetes is a condition in which the body is unable to use insulin normally meaning the amount of sugar in the blood is not controlled. Glumetza helps in controlling glucose level in blood. It reduces the amount of glucose that is produced by the liver and that absorbed by the body from food intake. Glumetza also helps increase the response of the body to insulin.