Oxygen versus Ozone

I'm thinking of selling my ozone generator and getting an oxygen concentrator that I can breathe with during exercise. It puts out 10L per minute. My blood is in poor shape (toxic) and my RA of 10 years is getting quite severe. My doctor wants to give me biologic drugs, but so far I have not agreed to it. Do you think the oxygen concentrator would be be better for me? I can't afford to keep both machines. Any thoughts any one? Thanks.