This drug is a combination of two prescription medications. Each drug works differently.
Repaglinide belongs to a class of drugs called meglitinides. It lowers your blood sugar levels by stimulating the release of insulin from the pancreas. Insulin moves sugar (glucose) from the blood stream to the cells, where it belongs. This lowers your blood sugar levels.
Metformin belongs to a class of drugs called biguanides. It reduces the amount of glucose made by your liver, lowers the amount of glucose your body absorbs, and increases the effect of insulin on your body.