Chondroitin

Chondroitin is derived from the cartilage of various animals and is claimed to have several health benefits. In most cases, people use it medicinally to treat osteoarthritis. Chondroitin appears to work by decreasing inflammation, reducing the production of enzymes that damage cartilage, and increasing production of fluid in the joints. Although this is a "natural" product, it may cause side effects such as nausea, diarrhea, and hair loss.

What Is Chondroitin?

Chondroitin is a dietary supplement most often used to treat osteoarthritis, although it is also claimed to be beneficial for a few other uses. It is derived from the cartilage of various animals, including cows and sharks. Chondroitin is often used in combination with glucosamine, another dietary supplement. The term "chondroitin" almost always refers to chondroitin sulfate.
 
(Click Benefits of Chondroitin for more information on what the supplement is used for.)
 

How Does It Work?

Chondroitin is a molecule naturally found in the human body (as well as in many animals). It is part of a group of large molecules known as glycosaminoglycans. Researchers believe that chondroitin might work for arthritis in several ways, such as:
 
  • Inhibiting a cartilage-damaging enzyme known as leukocyte elastase
  • Decreasing inflammation (by changing the way certain white blood cells respond to various chemical signals)
  • Increasing the production of hyaluronic acid, a component of synovial fluid (the lubricating fluid in joints) and of cartilage.
     

Effectiveness of Chondroitin

Initial research for this supplement suggested that it might be an effective arthritis treatment. However, later research has shed some doubt on the effectiveness of chondroitin. At this point, it is not entirely clear if this product really does work for treating arthritis.
 
(Click Does Chondroitin Work? for more information.)
 

Dosing Information

Dietary supplements usually lack clear, evidence-based dosing information. However, some information about safe and effective chondroitin dosing can be obtained from clinical studies of the supplement.
 
(Click Chondroitin Dosage for more information.)
 

Side Effects of Chondroitin

Even though it is a "natural" dietary supplement, chondroitin can cause side effects. Studies have reported various possible side effects, including but not limited to:
 
(Click Chondroitin Side Effects to learn more, including potentially serious side effects you should report immediately to your healthcare provider.)
 

Drug Interactions

Chondroitin may interact with some medications (see Chondroitin Drug Interactions).
 

Is Chondroitin Safe?

Chondroitin is probably safe for many people when used appropriately. However, some people may be more likely to experience problems than others. Therefore, you should talk with your healthcare provider before taking chondroitin if you have:
 
Also, let your healthcare provider know if you are:
 
Make sure to tell your healthcare provider about any other medicines you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.
 
(Click Chondroitin Safety for more information, including any available warnings and precautions.)
 

What If I Take an Overdose?

It is not known what exactly to expect from an overdose with chondroitin. If you think you may have taken too much, seek immediate medical attention.
 
(Click Chondroitin Overdose for more information.)
 

Storage Methods for Chondroitin

Refer to the label of your individual product for information on how best to store the supplement. Keep all medications and supplements out of the reach of children.
 
Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;
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