Ask for a second opinion? Find and print as much research as you can? Explain that as an adult, you'll happily sign something saying you know she's concerned about the risk of the calcium, and that it was explained to you?
As a side question, why can't you tell your Doc or nurse that you altered your meds? Is it a compliance issue stemming from transplant down the road?
He's made me realize that your neph is merely out of her depth. Your case is outside of her experience, and I'd bet she's feeling a bit intimidated and concerned. I'm sure she wants to help you, but she realizes she doesn't know how, so her way of dealing with it is to resort to what she is familiar with.
A response is at HDC.JA
Yanno, I should apologize.
I don't know what type of center you use, but there has to be a medical director.
Also drastic, but what about Medicare, or your insurance company? (I know someone mentioned these things above).
As far as the AMA, informed consent, whatever people want to call it, I'm really not understanding WHY she would say no.
I struggle to accept that you can be held hostage to your doctor/clinic because you are the only NHHD patient in the state. There HAVE to be two heads to clack together to create a single damn brain between them.
You are asking for something that's been studied, shown effective, and is DOCUMENTED. (I know, there's documentation for every side of every argument)
My husband is an attorney. This is way out of his area of expertise, but I'm going to ask him, anyway, if consulting a lawyer, as suggested by Cariad, might be of some help. I am wary of this dispute seeping into the legal arena...once you lawyer up, things can get out of control