title: Asthma exacerbation associated with glucosamine-chondroitin supplement.
abstract: BACKGROUND
  Although dietary supplements are in widespread use, and some have been endorsed by the medical community and complementary and alternative practitioners, not much is known about their potential side effects or drug interactions.
  
  
  METHODS
  A case of asthma exacerbated by the use of a glucosamine-chondroitin supplement for osteoarthritis pain is described. The literature was searched from 1980 to 2002 using the terms "glucosamine," "chondroitin sulfate," "alternative medicine," and "dietary supplements," combined with "asthma."
  
  
  CONCLUSIONS
  The biological link between both chondroitin and glucosamine and secretions from the respiratory tree of persons with asthma lends biologic plausibility to the hypothesis that the patient's asthmatic episode was related to the dietary substance. Physicians would be wise to question their patients about use of dietary supplements as self-medication and consider the possibility of such supplements causing exacerbations of underlying conditions.
authors.affiliation: Department of Family Medicine, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, New Brunswick, NJ 08903-0019, USA.
authors.forename: Alfred F
authors.initials: AF
authors.lastname: Tallia
authors.forename: Dennis A
authors.initials: DA
authors.lastname: Cardone
mesh_terms: D001249:Asthma / Q000139:chemically induced* / Q000150:complications; D002809:Chondroitin Sulfates / Q000009:adverse effects*; D019587:Dietary Supplements / Q000009:adverse effects*; D005260:Female; D005944:Glucosamine / Q000009:adverse effects*; D006801:Humans; D008875:Middle Aged; D010003:Osteoarthritis / Q000150:complications / Q000188:drug therapy; D014481:United States
chemical_list: D002809:Chondroitin Sulfates; D005944:Glucosamine