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Experts aren't sure whether a glucosamine and chondroitin combo -- which people take for conditions like osteoarthritis, knee pain, back pain and glaucoma -- is effective for any of these conditions. Some studies have shown that it relieves pain in people with osteoarthritis of the knee, for instance, while other studies have failed to find any benefit.
Since there isn't enough research to determine a recommended dosage -- and because the right dose for you may depend on factors such as your age, health and other conditions -- talk with your doctor if you're interested in trying glucosamine and chondroitin.
The recommended dosage for glucosamine is 1,500 mg daily; chondroitin is 800-1,200 mg daily for arthritis. They can be taken once daily or divided into 2-3 equal doses. When taken once a day, more of the supplements actually reach your bloodstream and, presumably, your joints.
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