The present invention relates to the use of compositions comprising hyaluronic acid and dermatan sulphate for the preparation of medicaments to be orally administered for the treatment of osteoarthritis and osteoarthritis-associated articular pain. The present invention also relates to the use of compositions comprising hyaluronic acid and dermatan sulphate for the preparation of a food or a food supplement to nourish the synovial fluid in a joint, and to improve articular mobility. Preferably, the compositions also contain collagen hydrolysate and nucleic acids.
