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Related Experiment Videos

Cetirizine/pseudoephedrine.

K Wellington1, B Jarvis

  • 1Adis International Limited, Auckland, New Zealand. demail@adis.co.nz

Drugs
|January 5, 2002
PubMed
Summary
This summary is machine-generated.

This study found that a combination of cetirizine and pseudoephedrine significantly improved allergic rhinitis symptoms, including nasal obstruction and secretion, compared to other treatments. The medication was well-tolerated by participants.

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Area of Science:

  • Pharmacology
  • Allergy and Immunology

Background:

  • Cetirizine is a potent H1 receptor antagonist, and pseudoephedrine is an alpha-adrenergic agonist.
  • Allergic rhinitis significantly impacts quality of life, necessitating effective treatment options.

Purpose of the Study:

  • To evaluate the efficacy and tolerability of a fixed-dose combination of cetirizine and pseudoephedrine for allergic rhinitis.
  • To compare the combination therapy against intranasal budesonide, xylometazoline, and placebo.

Main Methods:

  • Three randomized, cross-over studies and two randomized, double-blind, multicenter trials were conducted.
  • Participants with seasonal or perennial rhinitis were challenged with house dust mite feces.
  • Symptom scores, nasal patency, and secretion volume were assessed.

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Main Results:

  • Cetirizine/pseudoephedrine 5/120 mg twice daily demonstrated superior efficacy in improving nasal obstruction, patency, and reducing nasal secretions compared to placebo and budesonide.
  • The combination therapy was more effective than xylometazoline in reducing nasal secretions.
  • Significantly greater symptom relief was observed with the combination compared to individual agents.

Conclusions:

  • Cetirizine/pseudoephedrine combination therapy offers a significant and well-tolerated treatment for allergic rhinitis.
  • The combination provides rapid onset of action and superior symptom control for nasal allergy sufferers.