Glucosamine & Chondroitin Sulfate

In late 1997 Dr. Jason Theodosakis was making the talk show rounds promoting
his new book, The Arthritis Cure. The word “cure” made the book an
instant best seller though Dr. Theodosakis admits it is an overstatement,
treatment is the more appropriate word.

What was this new book about? Glucosamine and chondroitin sulfate, two
naturally occurring substances found in the joints. Glucosamine is
synthesized in the body and is one of the building blocks of cartilage,
which becomes degraded in osteoarthritis. Chondroitin is also a part of
cartilage and may also block enzymes that degrade cartilage.

For the next couple of years, many doctors who did not feel them to be
beneficial would frown upon these supplements. Lately however, many doctors
recommend them to their patients with OA. Why the change in opinion? Mostly
reports from patients who claim they work.

A few studies have been done, most with results favoring the supplements.
One compared glucosamine to ibuprofen, a commonly prescribed NSAID. The
results of this study showed glucosamine to be more effective at relieving
the pain of OA. It should be noted that 10% of the ibuprofen subjects
dropped out of the study because of a variety of adverse reactions to the
medication, whereas no subjects in the glucosamine group dropped out for
drug-related reasons. Another large, multicenter, randomized, double-blind,
placebo-controlled trial study of 150 patients showed that fifty-five
percent of the glucosamine group were responders compared with 33% of the
group receiving placebo. Very few studies have been done on chondroitin
sulfate, which is usually sold in combination with glucosamine.�

The National Institutes of Health is sponsoring a large clinical trial,
including more than 1,000 patients. This study is currently under way, so we
may have a definitive answer on the effectiveness of these supplements soon.

Side effects of the combo seem to be relatively minor. Most often reported
are GI complaints, which often can be avoided by taking it with food or
switching brands. There is some concern that glucosamine can raise the blood
sugar of diabetics and that chondroitin sulfate may enhance the blood
thinning effects of anticoagulants. Diabetics and people taking coumadin or
heparin should be observed for these side effects.�

We should point out that not all brands are the same, buyer beware. The FDA
does not regulate these supplements and there are some unscrupulous people
out there passing off pills that contain virtually none of the promised
ingredients. A recent study of thirty-two chondroitin-containing products
purchased from pharmacies and health food stores showed Twenty-six products
had contain less than 90% of the chondroitin sulfate stated on the label,
with 17 products containing less than 40% of label claim. Only 5 out of the
32 products analyzed contained the greater than 90% of the labeled amount of
chondroitin sulfate in the product. Your best bet is to go with a recognized
brand. The two most popular brands are CosaminDS(TM) (Nutramax Labs) and
Osteo Bi-Flex(TM) (Sundown Vitamins). Dr. Theodosakis approves both of those
brands as well as Twinlab Maxlife Glucosamine & Chondroitin Sulfate and
Thompson Gluco-Pro 900 Glucosamine Chondroitin. Most experts recommend the
following dosage:�

Under 120 lbs: 1,000 mg glucosamine and 800
mg Chondroitin sulfate
Between 120 and 200 lbs: 1,500 mg glucosamine and 1,200 mg Chondroitin
sulfate
Over 200 lbs: 2,000 mg glucosamine and 1,600 mg Chondroitin sulfate

You should expect to take the supplements
for several weeks before noticing any results. As with any other supplement
or medication we recommend that you let your physician know you are taking
it.

At this time there are no indications that glucosamine or chondroitin have
any benefit for any other type of arthritis. It has been studied only in OA.

References:
Double-blind clinical evaluation of the relative efficacy of ibuprofen and
glucosamine sulphate in the management of osteoarthrosis of the knee in
out-patients.�
Lopes Vaz A – Curr Med Res Opin – 1982; 8(3): 145-9
Well-Connected-Osteoqrthritis Copyright � Nidus Information Services 2000
Glucosamine in the treatment of osteoarthritis.
Rheumatic Diseases Clinics of North America
Volume 26 o Number 1 o February 2000
Copyright � 2000 W. B. Saunders Company
Cush’s Osteoarthritis & G/CS Page�
Dr. Theo.com
American Nutraceutical Association
The Arthritis Foundation’s Guide to Alternative Medicine