I am 64 years old & have always been very active in sports. After having surgery 3 times on my left knee, I developed Arthritis. I kept playing tennis & bowling but my knee just killed me & I got very little relief from various drugs, ace bandages, etc. Now, before playing, I massage my knee with NR1222 & I can bowl 3 games or play 2-3 sets of tennis with no pain. I then massage it again after showering & I can’t tell I ever played. I can honestly say that I have never used a product that actually worked better than advertised until I used NR1222. I tell all my athletic friends, with various ailments, about your product. Keep up the good work & thank you.