A few years ago my leg from my knee to my foot feel asleep. When I stood up I did not notice it. I took a step with that leg and fell like a sack of potatoes. My leg disjointed from my ankle and I bruised it badly. The pain was unbearable. I actually thought I broke my ankle. So, I used DMSO (pure form). I rubbed it on three times a day. On the third day I could walk normally. It completely healed. No more bruising, swelling, or discomfort. I bought some more from Tractor supply. You can get it in a liquid form or gel. I got the gel. It says it is for horses, but so what. It still works.