Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A nonsedating antihistamine, C21H25ClN2O3, used in the form of its hydrochloride to treat allergic rhinitis and other allergic disorders.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A major metabolite of hydroxyzine, an antihistamine used in the treatment of allergies, hay fever, angioedema, and urticaria.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[(a)cet(ic acid) + alteration of (pip)erazine.]

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Examples

  • They include antihistamine tablets and nasal sprays, which calm the body's allergic reaction - older tablets can cause drowsiness, so choose a newer type such as cetirizine or loratadine, both of which can be bought over the counter.

    Environment news, comment and analysis from the Guardian | guardian.co.uk 2010

  • They include antihistamine tablets and nasal sprays, which calm the body's allergic reaction - older tablets can cause drowsiness, so choose a newer type such as cetirizine or loratadine, both of which can be bought over the counter.

    The Guardian World News 2010

  • Still, if loratadine doesn't relieve your allergy symptoms, nonprescription Allegra could be an option to consider, along with cetirizine Zyrtec and generic, another related—but more expensive—antihistamine available without a prescription.

    Allergy drug Allegra goes OTC 2011

  • A good next move is to go to your pharmacist and get a long-acting non-sedating antihistamine, containing cetirizine or loratadine commonly sold as Zirtek and Clarityn respectively.

    The inside track on hay fever 2011

  • Note: Fexofenadine (Allegra) and cetirizine (Zyrtec) are antihistamines without anti-cholinergic effects, but may cause sedation.

    Leo Galland, M.D.: Over-The-Counter Drugs That Can Cause Memory Loss M.D. Leo Galland 2011

  • Antihistamines such as Benadryl (diphenhydramine), Claritin (loratadine), and Zyrtec (cetirizine): for allergic reactions and hives.

    You Raising Your Child Michael F. Roizen 2010

  • Antihistamines such as Benadryl (diphenhydramine), Claritin (loratadine), and Zyrtec (cetirizine): for allergic reactions and hives.

    You Raising Your Child Michael F. Roizen 2010

  • Antihistamines such as Benadryl (diphenhydramine), Claritin (loratadine), and Zyrtec (cetirizine): for allergic reactions and hives.

    You Raising Your Child Michael F. Roizen 2010

  • Antihistamines such as Benadryl (diphenhydramine), Claritin (loratadine), and Zyrtec (cetirizine): for allergic reactions and hives.

    You Raising Your Child Michael F. Roizen 2010

  • Replication of where something oxycodone health risks hearing on cetirizine alpha rma treating physician oral levaquin sentence.

    Big Wall Street Journal Poll Contains Comfort For Both Parties 2009

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