Chondroitin sulfate improvesosteoarthritis (OA)knee pain and functional limitations in walking and daily activities as effectively as the anti-inflammatory drug celecoxib (Celebrex), according to a new study published recently inAnnals of the Rheumatic Diseases.But U.S. readers should know, there’s a catch: the researchers tested a version of chondroitin sulfate that is not available in this country.

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