Diabetes: Byetta it was like a miracle

I have a type 2 friend who took metformin for several years and found it had no effect on her attempts to lose weight. Then she added Byetta, and she said it was like a miracle. She said she felt full after eating very little, didn't feel nauseous but lost her interest in food. She said it was as if she'd had a brain transplant, and she started losing weight without effort. It was wonderful.

Then she had a kidney test, and it showed only 30% kidney function. You're not supposed to take metformin when your kidneys are impaired, so they took her off the metformin. Without the metformin, the Byetta didn't do a thing for her. Didn't affect her A1c, didn't help her eat less, didn't help her lose weight. So she dropped it. Now she simply can't stop nibbling all day.