Oxygen / Hyperbaric oxygen centres?

I am very sensitive to all conventional drugs, especially systemic ones, normally can only take sub clinical doses (which prove that a clinnical dose is a myth as these DO work for me, doctors are always amazed as they can see they are not placebos) and many drugs I simply cannot take.
Consequently I am researching other treatments as well and see that hyperbaric oxygen alongisde RADS increases survival rates significantly and reduces side effects. Is there anyone who has tried this out?