I had a terrible sprain or strain of muscles or ligaments in my low back. It was so bad, I was using crutches and a wheelchair to get around my house. Reading of the old remedy of "vinegar and brown paper, " I thought perhaps the vinegar drew DMSO out of the woodpulp of the paper... So I rubbed DMSO on my back and soaked a cloth in ACV.... This combination worked better than the DMSO alone and was almost miraculous in the effect it had. Several such treatments greatly resolved the excuciating pain I was in.