Is there a generic drug that compares to onglyza (saxagliptin)? It's very costly. I also take metformin 500 tid & glucotrol ER 10 bid.

No. Unfortunately not. The best way to reduce the cost of medicines for type 2 diabetes is to work on your diet and lose weight so you can be weaned off of some of your medicines. Talk with your doctor about diabetes education classes or seeing a nutritionist. Also, make sure you are exercising, it helps your body's tissues use the glucose in your blood and helps control your blood sugar.