Quest Vitamins LTD,
Issue # 66.8 - Joint Health
Efficacy of oral glucosamine sulfate and chondroitin sulfate?
To assess the structural and symptomatic efficacy of oral glucosamine sulfate and chondroitin sulfate in knee osteoarthritis through independent meta-analyses of their effects on joint space narrowing, Lequesne Index, Western Ontario MacMaster University Osteoarthritis Index (WOMAC), visual analog scale for pain, mobility, safety, and response to treatment. The results demonstrated a highly significant efficacy of glucosamine on all outcomes, including joint space narrowing and WOMAC. Chondroitin was found to be effective on Lequesne Index, visual analog scale pain, mobility, and responding status. Safety was excellent for both compounds. This study demonstrates the structural efficacy of glucosamine and indistinguishable symptomatic efficacies for both compounds.
Arch Intern Med. 2003 Jul 14;163(13):1514-22
Effective in ameliorating physical symptoms?
There is preliminary clinical evidence to support the contention that the anti-inflammatory and analgesic properties of bromelain help to reduce symptoms of osteo- and rheumatoid arthritis. However, there have been no controlled studies of its effects on joint health in healthy subjects who lack such diagnosis. The current study investigated the effects of bromelain on mild acute knee pain of less than 3 months duration in otherwise healthy adults. Bromelain was administered at levels of 200 mg or 400 mg per day. It concluded that bromelain may be effective in ameliorating physical symptoms and improving general well-being in otherwise healthy adults suffering from mild knee pain in a dose-dependant manner. Double blind, placebo-controlled studies are now warranted to confirm these results.
Phytomedicine. 2002 Dec;9(8):681-6