Wellbutrin.
It's known for the fact it doesn't cause weight gain. And it *may* help you loose weight!
I also answered your other post, so, you may want to read that before you go off to the doc, but, Wellbutrin, or it's generic, buproprion, is the best bet. Furthermore, it has few sexual side effects too.
One caution. It *may* cause anxiety. At regular dosage levels, (300 mg), it can cause me panic attacts. I'm sensative to meds. So, just be aware. I take only 100 mg as a result.
Good luck to you. Let us know what you decide!
Shalom!