Metformin is used for treating type 2 diabetes. It is used along with diet and exercise. It may be used alone or with other antidiabetic medicines. Metformin is a biguanide antidiabetic. It works by decreasing the amount of sugar that the liver produces and the intestines absorb. It also helps to make your body more sensitive to the insulin that you naturally produce.The picture features 500 mgs tabs box. Although we sell and ship 1000 mgs tabs for the $65 price we advertise.