Supposedly it is good for so many more things than pain, sinus/asthma/allergies, hair/nails/skin, internal/intestinal problems... on and on..

I learned about it in 1999 when I had a major RSI injury, I really think it played a big part in my recovery and pain reduction.
I need to get my bottle of MSM capsules out from the back of my cabinet and start taking it regular again.. it got pushed to the back last time we got some new OTC stuff...