Tsk, tsk. Naw, I don't know your age (and a gentleman doesn't ask), I just wanted to emphasize that doc's recommendation of glucosamine has had effective restorative (not just preventative) effect even in folks who were presumed to be a bit too advanced in years for effective self-repair. My Ma probably falls into the "late middle-aged" camp, and she could list you a whole range of physical activities which have become easier for her since she started taking glucosamine. Although I'd add that the six-month timeframe mentioned by the_doc is probably realistic, the effects were not immediate.
Of course, your results may vary.
My 6th baby shares your birthyear...UMMMMMMMMMMMMMMM..she is expecting baby #1 soon....is that a general hint *grin*
The brands I take are Enzymatic Therapy 500mg glucosomine sulfate and Source Naturals 400mg chondroitin sulfate. Enzymatic Therapy has reputation for making the best glucosomine. Source Naturals is just a very good vitamin company. I want companies I can trust for this stuff.