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Relevant sites from
HON's MedHunt:

  Antihistamine Multimedia
from HONselect:

 Histamine H1 Antagonists


Drugs which block the action of histamine , thus preventing or alleviating the major symptoms of an allergic response .

Antihistamines are typically combined with a decongestant to help relieve nasal congestion.

Examples include:

  • Alkylamines (Chlorpheniramine, Brompheniramine)
  • Ethanolamines (Diphenhydramine, Dimenhydranate, Clemastine)
  • Piperazines (Hydroxyzine, Meclozine, Compazine)
  • Piperadines (Azatadine, Triprolidine)
  • Ethylenediamines (PBZ)
  • Phenothiazines (Thorazine, Temaril)
  • Tricyclic antidepressants (Imipramine, Doxopin, Amitryptoline)
  • Other (Terfenadine, Astemizole, Loratadine, Acrivastine)


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    Last modified: Fri Jun 28 2002