GNC has DMSO?!? Hell, last I knew that was illegal for humans over 30 yrs ago! I would LOVE to find some. It is the best linament I have ever used. I used to get it from the horse guys. Once, in Austria (1987), skiing Alps glaciers in Nov, knees were KILLING me. Guy was giving sleigh rides in single digit weather. Horses' knees were wrapped. I asked him what he was using and it was DMSO. Got some and the rest of the long wkend skiied like a downhill racer, albeit not a vampire came within a mile of me!!!! Roommate wasn't too fond of me either, irrc!