Getryl contains the active ingredient Glimepiride, which is used along with diet and exercise, and sometimes with other medications, to treat type 2 diabetes. According to MedlinePlus, "Glimepiride lowers blood sugar by causing the pancreas to produce insulin and by helping the body use insulin efficiently. This medication will only help lower blood sugar in people whose bodies produce insulin naturally."

Ref: MedlinePlus

I hope this helps!