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Related Experiment Videos

Terfenadine, a nonsedating antihistamine.

C A Carter, N J Wojciechowski, J M Hayes

    Drug Intelligence & Clinical Pharmacy
    |November 1, 1985
    PubMed
    Summary
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    Terfenadine, a selective H1-receptor antagonist, offers effective allergy relief with minimal side effects. Its unique structure leads to less central nervous system depression, making it a favorable antihistamine option.

    Area of Science:

    • Pharmacology
    • Allergy and Immunology

    Background:

    • Terfenadine is a newly approved antihistamine in the U.S.
    • It exhibits a distinct chemical structure compared to existing antihistamines.
    • Possesses selective H1-receptor inhibition with minimal anticholinergic, antiserotoninergic, or antiadrenergic activity.

    Purpose of the Study:

    • To evaluate the efficacy and safety profile of terfenadine.
    • To compare terfenadine with other antihistamines in treating allergic conditions.
    • To investigate the central nervous system (CNS) effects of terfenadine.

    Main Methods:

    • Comparative clinical studies were conducted.
    • Assessment of efficacy in allergic rhinitis and hypersensitivity.
    • Pharmacokinetic studies on CNS penetration and receptor affinity.

    Related Experiment Videos

    Main Results:

    • Terfenadine demonstrated comparable efficacy to other antihistamines.
    • Minimal central nervous system (CNS) depression was observed.
    • Drug metabolites showed limited passage into the CNS and low affinity for central H1-receptors.

    Conclusions:

    • Terfenadine is an effective antihistamine for allergic conditions.
    • Its lack of CNS and anticholinergic effects offers an advantage.
    • The long duration of action supports twice-daily dosing, presenting an attractive alternative.