First off realize that the medical industry is a business in may ways no different then any other business. It’s priority is to make a profit. The first defense of your health is you.
You never want to blindly follow doctors orders. Sure doing your own research on problems before deciding what you will allow doctors to do is no guarantee that you or they will make the right decisions, but at least it should give you the peace of mind that YOU did all you possibly could.
Now having given my two cents worth, let me say one more thing. Ditch your current meds and try Alpha Lipoic Acid.
Warning! I only say this because it works great for me, just saying.