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Related Experiment Videos

Astemizole: a long-acting, nonsedating antihistamine.

P M Krstenansky1, R J Cluxton

  • 1College of Pharmacy, University of Cincinnati, OH 45267.

Drug Intelligence & Clinical Pharmacy
|December 1, 1987
PubMed
Summary

Astemizole offers effective relief for chronic allergic rhinitis and urticaria with fewer sedative effects than older antihistamines. Its long-acting nature allows for convenient once-daily dosing in allergic condition management.

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Area of Science:

  • Pharmacology
  • Allergy and Immunology

Background:

  • Histamine H1-receptor antagonists are crucial for managing allergic conditions.
  • Conventional antihistamines often cause significant sedation and anticholinergic side effects.
  • There is a need for effective antihistamines with improved safety profiles.

Purpose of the Study:

  • To evaluate the efficacy and safety of astemizole as a histamine H1-receptor antagonist.
  • To compare astemizole with existing treatments for allergic rhinitis and urticaria.
  • To assess astemizole's suitability for chronic allergic condition management.

Main Methods:

  • Review of comparative studies and clinical data on astemizole.
  • Analysis of astemizole's pharmacokinetic properties, including half-life and metabolite activity.
  • Assessment of reported efficacy in allergic rhinitis, conjunctivitis, and chronic urticaria.

Main Results:

  • Astemizole demonstrates efficacy comparable or superior to existing antihistamines, beclomethasone nasal spray, and cromolyn sodium for seasonal and perennial allergic rhinitis.
  • It is also effective for allergic conjunctivitis and chronic urticaria.
  • Astemizole has a delayed onset of action, making it less suitable for acute allergic symptoms.
  • Lower incidence of sedation compared to conventional antihistamines, though increased appetite and weight gain are noted.
  • Long elimination half-lives of astemizole and its metabolite allow for once-daily dosing.

Conclusions:

  • Astemizole is a valuable option for maintenance and prophylactic therapy in chronic allergic conditions.
  • It is particularly beneficial for patients intolerant to sedative or anticholinergic effects of conventional antihistamines.
  • Its long-acting profile and reduced sedation enhance patient compliance and quality of life.

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