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Related Experiment Videos

Immediate reaction to clarithromycin.

S Gangemi1, L Ricciardi, R Fedele

  • 1School and Division of Allergy and Clinical Immunology, University of Messina, Policlinic Pad. H, Messina, Italy.

Allergologia Et Immunopathologia
|July 14, 2001
PubMed
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A rare bronchospastic reaction to the antibiotic clarithromycin was observed during a drug challenge test. This immediate-type hypersensitivity reaction, manifesting as dyspnea and cough, has not been previously reported for clarithromycin.

Area of Science:

  • Pharmacology
  • Clinical Allergy and Immunology

Background:

  • Macrolide antibiotics, like clarithromycin, are frequently used due to their broad-spectrum activity and perceived low allergic potential.
  • Previous literature reports few instances of allergic reactions to macrolides.

Observation:

  • A patient experienced dyspnea, cough, and widespread bronchospasm shortly after receiving a fraction of a therapeutic dose of clarithromycin.
  • A placebo administration did not elicit any adverse reaction, confirming the clarithromycin-induced response.

Findings:

  • The clinical presentation and rapid onset suggest an immediate-type hypersensitivity mechanism.
  • This case represents the first reported instance of a bronchospastic reaction specifically linked to clarithromycin.

Implications:

Related Experiment Videos

  • Highlights the potential for unexpected adverse drug reactions even with commonly used antibiotics.
  • Suggests the need for vigilance regarding hypersensitivity to macrolides, including clarithromycin, in clinical practice.
  • Underscores the importance of drug challenge testing for diagnosing specific drug allergies.