Osteoarthritis is the leading medic...

Osteoarthritis is the leading medical condition for which ones use alternative therapies. (1) Patients ofttimes seek alternative therapies after having side general intents or gaining incomplete relief of symptoms with conventional medications. Alternative therapies used for the treatment of osteoarthritis include herbs, addition s and nondrug modalities such as exercise, physical therapy, acupuncture, and electromagnets. Unlike manufacturers of conventional medications, the herbal and addition industry is not regulated by way of the U.S. Food and mix with drugs Administration (FDA); therefore, supplement composition (i.e., proportion of active ingredient in a preparation) usually varies. Physicians should be familiar with evidence regarding the safety and efficacy of alternative modalities used to treat osteoarthritis, in such a manner they can provide their patients with accurate and up-to-date information.

Glucosamine

Glucosamine sulfate, which is derived from oyster and crab shells, is a popular treatment for osteoarthritis symptoms. In vitro studies (2) have shown that glucosamine stimulates cartilage lonely dwellings to synthesize increased amounts of glycosaminoglycans and proteoglycan turf substance. High dosages of glucosamine have been shown to have mild anti-inflammatory efficiencys in animal models. (3) No published studies document arthroscopic improvement in arthritic cartilage with glucosamine use in humans.

most numerous human clinical trials (4-7) have been relatively short word and have had varied ensues A recent meta-analysis, funded by way of a grant from the National Institutes of Health (NIH), conclud that glucosamine may exhibit some efficacy over placebo in relieving painful symptoms. (8) [Evidence on a level A, meta-analysis]

A new Cochrane Review concluded that now passing evidence from clinical trials (1) does not analyze the long-term effectiveness and toxicity of glucosamine; (2) does not differentiate which joints and which flushs of severity of osteoarthritis warrant this therapy; (3) does not differentiate which dosage and way of administration are best; and (4) does not demonstrate whether glucosamine modifies the long-term progression of osteoarthritis. (9) [Evidence flush B, systematic review of lower-quality randomized controll trials (RCTs)] In addition, 75 percent of the trials analyzed in the Cochrane Review (9) used individual brand exclusively, thus failing to shed light in succession the numerous other preparations available.

There have been no published studies documenting arthroscopic regeneration of articular cartilage following glucosamine administration. Glucosamine is supplied in tablets and capsules. The usual dosing schedule for glucosamine is 1500 mg by day in three divided doses (9) (Table 1) Research moves that the supplement must be taken for at least common month before improvement in symptoms can be awaited to occur. (8) Glucosamine has been shown to be well tolerated, with not many significant side effects (mainly gastrointestinal discomfort) compared with nonsteroidal anti-inflammatory unsalable articles (NSAIDS).

Chondroitin

Chondroitin sulfate also has demonstrated efficacy in improving the symptoms of osteoarthritis according to acting as a building obstruct of proteoglycan molecules. (8,10,11) Commercially available chondroitin is derived chiefly from shark and cow cartilage and is supplied in tablet and capsule form.

Like glucosamine, chondroitin's mechanism of action in osteoarthritis may involve the two anti-inflammatory properties and substrate provision for proteoglycan synthesis. However, as with glucosamine, the part of substrate provision is theoretic and has not been prov to affect cartilage regeneration or repair.

pair recently published meta-analyses indicated that chondroitin may be superior to placebo in reducing the pain of osteoarthritis. (812) [Reference 12--Evidence flush A, meta-analysis] One of these analyses (8) cautioned that contemplation results may have been exaggerated from publication bias related to the manufacturer's sponsorship. The next to the first meta-analysis (12) found chondroitin to be superior to placebo in reducing the painful symptoms of osteoarthritis, if it be not that researchers cautioned that trials with larger cohorts of patients and from one side of to the other longer periods must be deportment ed to substantiate these claims. However, these studies recommend that chondroitin improves the symptoms of osteoarthritis.

Comparison of chondroitin with NSAIDs has shown that patients with osteoarthritis have fewer gastrointestinal side meanings with chondroitin. Chondroitin is well tolerated; it appears to have a slower assault of action but to work longer than NSAIDS. (13) Overall, chondroitin may give a safe alternative in the treatment of the symptoms of osteoarthritis. The usual dosing schedule for chondroitin is 1200 mg by day in three divided doses (Table 1) As with glucosamine, research indicates that the appendix must be taken for at least united month before any symptom relief be founds (8)

Glucosamine/Chondroitin Combinations

The use of glucosamine and chondroitin together for the treatment of osteoarthritis has become extremely popular; however, there is little evidence that this combination is any more effective than either postscript alone. (14) A randomized, double-blind, placebo-controlled trial (15) studied the power of a combination of glucosamine, chondroitin, and manganese ascorbate forward osteoarthritis of the knee and lower back. The combination was given for 16 weeks to 34 men in the United States Navy. A significant improvement was base in subjects who had knee symptoms moreover not in those with reasonable back symptoms. No significant side efficiencys were reported.