Absorption and Distribution of Glucosamine and Chondroitin

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00086229
Recruitment Status : Completed
First Posted : June 29, 2004
Last Update Posted : August 18, 2006
Information provided by:
National Center for Complementary and Integrative Health (NCCIH)

Brief Summary:
The purpose of this study is to examine the way the dietary supplements glucosamine and chondroitin are absorbed and distributed throughout the body.

Condition or disease Intervention/treatment Phase
Osteoarthritis Drug: Glucosamine Drug: Chondroitin Not Applicable

Detailed Description:

Osteoarthritis is the most common musculoskeletal disease in the world. While predisposing conditions have been identified, the actual cause of osteoarthritis remains unknown. Traditional treatments, most often anti-inflammatory drugs and pain relievers, produce variable results and may cause significant toxicity. The use of complementary and alternative therapies in the treatment of osteoarthritis has become more common, and particular interest has focused on glucosamine and chondroitin treatments. This study will examine the pharmacokinetics of glucosamine and chondroitin.

This study consists of two phases. In Phase I, participants will have two study visits, during which multiple blood samples will be taken to determine levels of glucosamine and chondroitin found naturally in the body. During Phase II, participants will be randomly assigned to receive glucosamine, chondroitin, or a combination of the two for 3 months. Blood samples will be taken at each of the three Phase II study visits to examine the pharmacokinetics of glucosamaine and chondroitin.

Study Type : Interventional  (Clinical Trial)
Enrollment : 70 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Pharmacokinetic Study of Glucosamine and Chondroitin
Study Start Date : April 2004
Study Completion Date : January 2006

Information from the National Library of Medicine

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Ages Eligible for Study:   21 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Able to walk

Exclusion Criteria:

  • Allergy to glucosamine, chondroitin, or shellfish
  • Liver or kidney disease
  • Diabetes mellitus
  • Concurrent use of other complementary or alternative therapies

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00086229

United States, Utah
University of Utah Health Sciences Center
Salt Lake City, Utah, United States, 84132
Sponsors and Collaborators
National Center for Complementary and Integrative Health (NCCIH)
Principal Investigator: Christopher G. Jackson, MD University of Utah Identifier: NCT00086229     History of Changes
Other Study ID Numbers: R21AT001938-01 ( U.S. NIH Grant/Contract )
First Posted: June 29, 2004    Key Record Dates
Last Update Posted: August 18, 2006
Last Verified: August 2006

Keywords provided by National Center for Complementary and Integrative Health (NCCIH):
Complementary Therapies

Additional relevant MeSH terms:
Joint Diseases
Musculoskeletal Diseases
Rheumatic Diseases