I bought these because I tore my meniscus and wanted some extra help to strengthen everything. Needless to say, within a week, my knee was healed. Crazy I know, and might be coincidental but I also had bursitis on my ankle that was there for months. I accepted it would be there forever, but Im not kidding after taking the maximum dose of this for a few weeks- thats gone too. Again, I dont know if this is all a coincidence, but I definitely will keep up the regimen in case! I will say I have AWFUL back pain which this hasnt touched yet, but my back is also a MESS.