so metformin is a drug that has been used for many years uh depends you know where it was first approved I think was in Europe um but you know call it directionally 50 plus years of use as a first line agent for patients with type 2 diabetes in the U.S maybe 40 plus years so this is a drug that's been around forever trade name glucophage or brand name and uh but but again it's you know it's a generic drug today