When should i begin taking glucosamine?

As soon as Dx made.: If you are an adult and already diagnosed having osteoarthritis you may. I am not aware glucosamine may prevent the disease. Remember that in the USA we have conflicting reports. Read the article in wikipedia.http://en.wikipedia.org/wiki/glucosamine.

Unproven: While these dietary supplements are very popular, their usefulness has not been convincingly proven.

When there's OA: The combination of glucosamine and chondroitin has been shown in studies to (1) provide a degree of pain relief in the short term, and (2) trigger growth of new cartilage when taken for at least two years straight. So it can help you pain and reverse some of the chronic damage. You can find this in the health food store. Start when arthritis is evident and painful.