 It's hard to realize it because time seems to pass so quickly, but I have been using Relief Factor for more than 10 years. This is a great product. My wife uses it as well, particularly in the summertime when you're more physically active. Get rid of those aches and pains that might interfere with the fun and the good exercise. This is a totally natural, healthy, good for you product, and it certainly is good for the way you feel.