? generic gamunex

Not sure why if there is no such thing as generic ivig—but the label on mine always reads Gamunex only –no generic equivalent. I will ask the nurse at the infusion center next time why it says this and if it doesnt state this, might something different be used?? I somehow always seem end up in the chair directly cross from the ivig pharmacist–maybe i can see what info he has on it. Lori