The popular dietary supplement combination of glucosamine and chondroitin appears to be no more effective at preventing joint damage caused by arthritis than a placebo. That’s the conclusion of the long-awaited second phase of the landmark Glucosamine/Chondroitin Arthritis Intervention Trial, or GAIT, which published the journal Arthritis & Rheumatism.
While the first phase of GAIT, the first large-scale study of any dietary supplement, was designed to gauge what effect the combination of glucosamine and chondroitin sulfate might have on knee pain, the second phase looked at whether the supplements could slow the destruction of cartilage that leads to narrowing in knee joints, which is visible on an X-ray.
Researchers at nine centers around the country followed 357 people with knee osteoarthritis who were randomly assigned to take daily doses of either 1500 mg of glucosamine, 1200 mg chondroitin sulfate, the combination of glucosamine and chondroitin, 200 mg of celecoxib (Celebrex), or placebo pills.
After two years, X-ray differences between the five groups were barely detectable.
Those assigned to the placebo group had lost an average of .166 millimeters of cartilage in their knees, while the group taking glucosamine with chondroitin lost .194 millimeters.
While none of the differences between the groups was statistically significant, the researchers noted that the participants who lost the least amount of joint space over two years were in the groups taking either glucosamine alone or chondroitin alone. Participants in those groups lost averages of .013 millimeters and .107 millimeters in their knees, respectively.
Previous studies have indicated that taking the two supplements together might limit their absorption into the body. If that’s true, researchers think that could be a reason why they didn’t see any effect in this trial.
Though the study failed to find any benefit in taking glucosamine with chondroitin for arthritis patients, even the study’s lead author says this is not the final word on the popular supplements.
Allen D. Sawitzke, MD, an assistant professor of medicine at the University of Utah School of Medicine in Salt Lake City, says that because of significant limitations, like a small sample size, this study probably didn’t have enough power to determine whether glucosamine and chondroitin are truly effective for patients with arthritis.
He says that he and his colleagues were puzzled and disappointed by their results.
“I think we feel like it would have been nice to answer the question definitively, but we really couldn’t do that,” Dr. Sawitzke says.
Based on his experience with GAIT, Dr. Sawitzke says he no longer recommends glucosamine and chondroitin to everyone, but that he does support its use in appropriate people.
“If they want to take it for pain, I tell them to try it for three to four weeks,” he says. “If they feel better, I say keep taking it.”

































Glucosamin, Chondroitin, & MSM that I bought for her to relieve her knee pain made her knees swell. She stopped taking the M, C & MSM.
hmmm she is on prescription drugs for diabeties, cholestoral, hypertension and thyroid.
What could cause her swelling. I have been taking Glucosamin, Chondroitin, & MSM for years and never had swelling.
Thanks for you kind answers.
Judy
In addition, the reason for the "arthritis, type of arthritis, and type of tests run can also make a huge difference as to weather or not a person taking supplements may or may not be helpful for a person diagnosed with arthritis.
All too often, a person is labeled as having "arthritis" with little or no tests, other times extensive tests are run, then there is the cause and what type of arthritis a person has.
Hopefully there will be more in-depth information on the type of arthritis, as well as possible cause of the arthritis (auto-immune, recent trauma, older trauma, old or new barotrauma, etc.)
In addition, I do agree with Dr. Sawitzke that the amount of people in the study is too few to be statistically significant, yet also that there are too many loose ends regarding ingredients and determinating factors in the study to be useful.
Hopefully the experimental design in such studies will be constructed more carefully so they have meaning.
If not this brand, it is important to look for the daily dosage and make sure it is 2 pills. If you were to find a brand that the dosage is 1 pill a day, better yet.
I had found brands that showed the same amounts of MSM, Chondroitin and Glucosamin as this one and were way cheaper, so I bought one. But I was surprised to see that dosage was 4 pills.
The 3 supplements together help me, although I have never taken them separately, maybe except for MSM that wasn't in the 1st brand I took.
All I know is that if I stop taking it for a few days, my pain comes back.
Chrondroitin. Would that have anything to do with my Cholestral? I don't know if I should to continue taking it.
I thing if I weren't taking this I would not be able to function.
But what I actully do is take for quite awhile and then stop. And resume taking it.
Also I take Viamin D with Calcium with my meals once a day.
Try to eat plenty of veggies,fruits, salads. Do moderate exercise.
Spend a little time with yourself- meditation.
Get nice scented candles, if you have a spouse, boyfriend, girlfriend daughter , son etc. let them give a gentle massage.
Drink Green Tea.
I wish everybody all the Best in Life.
Gale
I think there are too many companies out there trying to patent their combinations of glucosamine, condroitin, MSM, and a few additional anti-inflamitories and I feel that it is simpy overkill for long term usage. Almost everyone is going to be taking them for the rest of their life, so take as little as possible, you can always increase when needed.
Pain and swelling, so much at times cannot walk without a cane! Looking into Glucosamine Chondroitin. It's so expensive! Best reviews I've read so far are from the Qvc home shopping channel. The one they sell is Natures Code extended release. It says once daily formula, that's 3 tablets daily with a full glass of water. The testimonials are amazing, even for their dogs! Don't know what kind of arthritis I have, nurse said the kind that comes with aging! Now if I can figure out how to afford this I might be saying something!
At present I have stopped taking it, not sure if there is a difference yet, but will report back. I suffer from a type of arthritus and spinal problems.
It is so important to keep your mobility going, although very painful, when I stop my pain gets worse.
I would love to hear from Donna who wrote on the 11 May about a good brand - please pass on my email to her so that she can advise me on which brand she feels is a good one.
I have had dreadful knee pain for 6 months and commenced taking a Glucosamine Chrondontrin tablet from Boots, it seems to be working. I have now finished these and have just bought more but from Holland and Barratt and notice that this is a Glucosamin Sulphate tablet. What is the difference?
i would be grateful for some advice.
thanks
There is belief that glucosamine and chrondroitin used in combination render each other ineffective. However, just as this article states, used separately has proven to have therapeutic value.
Well I've done the gloc/chond and all my regular medications I'm taking I ache and have stiffness in the morning wish that would go away!
The weather certainly has an affect on me, somedays everything hurts just because of the lovely weather.
Nice to have a place to complain to those that know exactly what you mean.
Keep trying ! Exercise anyway you can ! Keep moving it's best for you !
God Bless ^_~
Here’s what those ingredients do:
Glucosamine has been clinically tested to positively affect joint function.
Chondroitin helps maintain your healthy cartilage.
Manganese, glucosamine, and chondroitin assist your body in the building and repair of cartilage.
Boron plays a role in the maintenance of your healthy joints.
5-Loxin is a potent boswellic acid, and these acids have been shown to improve joint function in 7 days.
OptiMSM may be used by your body to maintain normal connective tissues, like your tendons and ligaments.
If you want more information, let me know.
Should I try the 5-Loxin or Flexi - 5? What are the side effects of this herbal treatment?
NutraJoint plus glucosamine, chondroitin and MSA with gelatine. It was on sale and I had a coupon. Had not taken any other supplements and was wondering if I should start. Have pangs of pain from time to time and difficulty sleeping on my left side.
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