Eucreas is a medication that combines two active ingredients, vildagliptin and metformin. Vildagliptin helps lower blood sugar levels by increasing the release of insulin after meals and reducing the amount of sugar produced by the liver. Metformin works by decreasing the amount of sugar your liver makes and that your stomach/intestines absorb. Eucreas is suitable for individuals with type 2 diabetes who have not achieved adequate blood sugar control with metformin alone or who are already taking vildagliptin and metformin separately.