I had this happen with Risperdal: I stopped it before turning diabetic. The thing is, I did not gain weight on it, but it did raise the blood glucose level.

I was recently on a low dose of Zyprexa, also without a weight gain, but it raised my cholesterol. I now keep it as my PRN.

It is awful in terms of metabolic side effects. But the thing is, as you said, it is a perfect med otherwise, so... hard choices.

Google search for metabolic side effects of REXULTI does not bring up anything at all. I hope it is your solution.