Does glucosamine or chondroitin help with arthritis?

Maybe: There is some evidence that they may be helpful for treating osteoarthritis.

Unconvincing: Research has failed to give convincing evidence of benefit. Anecdotally, however, I have patients that swear by it. So, if it doesn't break the bank, a 2-3 month trial cannot hurt. But if no benefit, don't expect a longer duration to of any further benefit.