Borderline BiPolar taking generic zoloft

I was diagnosed with borderline bipolar about 4 years ago. I take generic Zoloft once a day, 100 mgs. and find the name brand works best for me but can't get my insurance company to pay the difference. I would have to get my dr. to fill out lots of forms and stuff to possibly get the name brand approved. Unfortunately, I've been on the generic for a couple/three years now and doubt the insurance company would approve it now. Anyone else take this medicine or similar one and have/had the same issue? I could really use advice on it because the name brand does so much better for me than the generic. It helps me sleep better, calms my panic/anxiety attacks more, plus I don't seem to have as many mood swings. I think it helps my agrophobia more also. I wonder if maybe the dr. could add another med to go with it that might make up the difference but I already take so many meds between these issues and having fibromyalgia, osteoarthritis, osteoporosis, IBS, and the list goes on and on.