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Absorption and Distribution of Glucosamine and Chondroitin

This study has been completed.
Information provided by:
National Center for Complementary and Integrative Health (NCCIH) Identifier:
First received: June 28, 2004
Last updated: August 16, 2006
Last verified: August 2006
The purpose of this study is to examine the way the dietary supplements glucosamine and chondroitin are absorbed and distributed throughout the body.

Condition Intervention
Osteoarthritis Drug: Glucosamine Drug: Chondroitin

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Pharmacokinetic Study of Glucosamine and Chondroitin

Resource links provided by NLM:

Further study details as provided by National Center for Complementary and Integrative Health (NCCIH):

Estimated Enrollment: 70
Study Start Date: April 2004
Estimated Study Completion Date: January 2006
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.


Ages Eligible for Study:   21 Years and older   (Adult, Senior)
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
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: 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
  More Information Identifier: NCT00086229     History of Changes
Other Study ID Numbers: R21AT001938-01 ( U.S. NIH Grant/Contract )
Study First Received: June 28, 2004
Last Updated: August 16, 2006

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

Additional relevant MeSH terms:
Joint Diseases
Musculoskeletal Diseases
Rheumatic Diseases processed this record on September 19, 2017