After using Tendlite,the pain in my knee went from 8 to a 2 in a matter of several days, and within a week I had regained full range of motion. I am a dancer, and I didn't expect 'magic'...I just wanted something to get me through so I wouldn't have to keep resting and icing my knee. Tendlite exceeded my expectations by making me feel the same vitality I had before my injury. It's also helped me condition my hips. Whenever I feel that annoying hip flexor tension coming on, I use Tendelite. It's allowed me to take my body to new levels without the pressure of wear and tear I would normally feel. It's also incredibly user friendly and compact- about the size of a lifesaver's package, so you can take it with you anywhere. A great product not only for joint ailments, but for active people who are serious about keeping their body conditioned.