Glucosamine and Chondroitin
Glucosamine and Chondroitin
What are glucosamine and chondroitin?
cartilage. acts as a cushion between the in a joint.are part of normal
Glucosamine, also called chitosamine, is a natural substance that is found in the covering of shellfish. It is available in different forms, including glucosamine hydrochloride, N-acetyl-glucosamine (NAG), and glucosamine sulfate, which is a combination of glucosamine and mineral salt. Glucosamine is also available in synthetic forms. The body absorbs glucosamine well.
Chondroitin can come from natural sources, such as shark or bovine cartilage, or it can be made in a lab. Chondroitin is also known as chondroitin sulfate, chondroitin sulfuric acid, and chonsurid. Chondroitin sulfate is a combination of chondroitin and mineral salt.
are available in tablet, capsule, powder, or liquid form and are often taken in combination with each other or in combination with other dietary supplements. Glucosamine may be taken separately as a dietary supplement for .
What are glucosamine and chondroitin used for?
Many people take footnote 1, alone or together, for . Some people believe this helps. But an analysis of studies looking at for or knee did not show that these supplements slow joint destruction or relieve pain.
Are glucosamine and chondroitin safe?
It appears that placebo. Talk to your doctor if you are thinking about taking ., alone or together, are safe and have few side effects. But they cost money and will not help you more than a
If you are allergic to shellfish, do not take glucosamine unless you have talked to your doctor. Some glucosamine is made from shellfish covering.
The U.S. Food and Drug Administration (FDA) does not regulate dietary supplements in the same way it regulates medicines. A dietary supplement can be sold with limited or no research on how well it works.
Always tell your doctor if you are using a dietary supplement or if you are thinking about combining a dietary supplement with your conventional medical treatment. It may not be safe to forgo your conventional medical treatment and rely only on a dietary supplement. This is especially important for women who are pregnant or.
When using dietary supplements, keep in mind the following:
- Like conventional medicines, dietary supplements may cause side effects, trigger allergic reactions, or interact with prescription and nonprescription medicines or other supplements you might be taking. A side effect or interaction with another medicine or supplement may make other health conditions worse.
- The way dietary supplements are manufactured may not be standardized. Because of this, how well they work or any side effects they cause may differ among brands or even within different lots of the same brand. The form of supplement that you buy in health food or grocery stores may not be the same as the form used in research.
- Other than for vitamins and minerals, the long-term effects of most dietary supplements are not known.
- Wandel S, et al. (2010). Effects of , or placebo in patients with or knee: Network meta-analysis. BMJ. Published online September 16, 2010 (doi:10.1136/bmj.c4675).
Other Works Consulted
- Chondroitin (2015). Facts and Comparisons eAnswers. http://online.factsandcomparisons.com/MonoDisp.aspx?monoID=fandc-np5090&quick=-316792%7c20&search=-316792%7c20&isstemmed=True&NDCmapping=-1&fromTop=true. Accessed April 28, 2016.
- Clegg DO, et al. (2006).sulfate, and the two in combination for painful knee osteoarthritis. New England Journal of Medicine, 354(8): 795â€“808.
- Drugs for osteoarthritis (2014). Medical Letter on Drugs and Therapeutics, 56(1540): 80â€“84. http://secure.medicalletter.org/system/files/private/TML-article-1450b.pdf. Accessed April 28, 2016.
- Gabay C, et al. (2011). Symptomatic effects of chondroitin 4 and chondroitin 6 sulfate on hand osteoarthritis. Arthritis and Rheumatism, 63(11): 3383â€“3391.
- Glucosamine (2016). Facts and Comparisons eAnswers. http://online.factsandcomparisons.com/MonoDisp.aspx?monoid=fandc-np5144&book=NP&fromtop=true&search=-513952%7c5&isStemmed=True&asbooks=. Accessed April 28, 2016.
- Scott D (2009)., search date May 2007. Online version of BMJ Clinical Evidence: http://www.clinicalevidence.com.
- Scott D, Kowalczyk A (2007)., search date October 2006. Online version of BMJ Clinical Evidence: http://www.clinicalevidence.com.
ByHealthwise StaffPrimary Medical Reviewer Anne C. Poinier, MD - Internal Medicine Martin J. Gabica, MD - Family Medicine Kathleen Romito, MD - Family Medicine Specialist Medical Reviewer Stanford M. Shoor, MD - Rheumatology
Current as ofOctober 10, 2017
Current as of:
October 10, 2017