I keep a bottle in my office, and another at home, for just such occurrences. DMSO is not medically approved because it is a cheap by-product of the pulp and paper industry, and therefore not patentable as a drug. Thus, no drug company is willing to go to the expense of running the necessary test to get it approved. It is, however, widely available in health food stores. DMSO has the ability to neutralize testosterone.
Many male athletes thrive on testosterone as a feature needed for competition.
Another problem with topical application of DMSO is that it can take with it live biological materials that may be on the surface of the skin. So it can pull with it virus for example that would not normally gain access to the interior of the body. As I read Bigelow's last sentence above, snake oil comes to mind. Hello, After discussed dangers of the use of DMSO suggested by Wil Bigelow, I have to share with you the old knowledge that the same effect on small burns can be obtained by a simple use of the egg white. You remove the membrane lining the egg shell and put it on the burned area.