I have both knee and ankle pain and asked my doctor abour G/C for my ankles which at the time when I asked were hurting worse, and he said that the G/C studies he read showed help for knees, but no significant help for any other joints...

As far as whether it helps me or not, I can't say for sure, since I sometimes get lax on taking it, and also let my shoes get worn (my shoes wear on the outside of the heels) then my knees start to hurt, so I get new shoes and start taking G/C more regularly and the pain goes away.



However, I can say, it does seem to work for me, and brand seems pretty irrelevant.