Desferal would be the one to avoid most, but when the iron load is severe, desferal is a must, unless the patient can be on full doses of both oral chelators at the same time. High doses of vitamin D and B-12 will also be of help. I would also suggest a natural chelator, as even though they are much weaker than the drugs, they can access places two of the chelators can't at all and can protect vital glands and organs. IP6, green tea extract, turmeric capsules can all help. They are all also potent antioxidants, which will also help protect the organs.
I was told something this week about IP6 that was new to me. This patient is having low white blood cell issues. When he uses IP6, he has found they return to normal. I speculate that it is the antioxidant property of IP6 is preventing the white blood cells from being filtered out by the spleen.