The scientific evidence for glucosamine or glucosamine/chondroitin makes it seem doubtful that it's effective at relieving the pain of osteoarthritis.
However, plenty of people who suffer from osteoarthritis think it's worked for them, so it's still worth giving glucosamine and chondroitin a try, even if the only result is the placebo effect. If you get any effect at all, it's likely to take four to six weeks. On the other hand, exercise and weight loss are likely to benefit you more.
Use the Products compared table
as a guide to what to choose.
It lists the products in the order of cost per maximum recommended daily dose, so start with one of the cheapest that has a dose of 1500mg/day or more of glucosamine. Avoid any that give you less than 1500mg/day of glucosamine.
If you think it's worthwhile trying the glucosamine/chondroitin combination, only three of the products (highlighted in green in the table
) contain the level shown to be effective in the big US trial, and they're among the most expensive per daily dose.