O2 is completely different as it looks for and bonds with dangerous oxygen free radicals, supplying the body with usable oxygen in a controlled and time-released manner, at cellular level, only where it is needed. O2, therefore, in no way creates free radicals. It causes free radical single atoms of oxygen to be neutralized.

If people use other oxygen products, such as ozone and stabilized oxygenated water, they should use antioxidants to minimize the free radical effect that can be caused by flooding too much oxygen into the body, at a rapid rate. Obviously, O2 would be ideal in this situation for normalizing and balancing the system.