Per a Google search, it looks like a medication to slow the release of glucose and increase insulin.  Per the page translated from Portugese: http://pt.wikipedia.org/wiki/Vildagliptina

Vildagliptin (LAF237) is a drug used for medicine

in the treatment of diabetes mellitus type 2. É a primeira substância, de uma nova classe de It is the first substance, a new class of drugs that increase the concentration of incretin.

The drug is an inhibitor of the enzyme DPP-4.

Furthermore, it reduces the secretion of glucagon
and increases the secretion of insulin.

Vildagliptin, operates in the alpha and beta cells of the pancreas.

Its use is not linked to side effects like weight gain, hypoglycemia and edema.

Metformin is the standard generic for most of us here in the States, a generic for Glucophage usually.

From what I read, I'd like to find some!  It does sound similar to one of my meds, Glimepiride.  See: http://en.wikipedia.org/wiki/Glimepiride

As with any medication, counsul with your doctor.  And ask your Doctor or Pharmacist about the europian drug.  They would have a better idea if it is FDA approved (available to us) and how it would be considered by your health plan.