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Related Experiment Videos

Improved hypnotic treatment using chlormethiazole and temazepam.

R S Briggs, C M Castleden, C A Kraft

    British Medical Journal
    |March 1, 1980
    PubMed
    Summary

    Both chlormethiazole and temazepam are effective hypnotics with no next-day impairment for older and younger adults. These drugs allow for safe sleep interruption, avoiding hangover effects in the elderly.

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    Area of Science:

    • Pharmacology
    • Gerontology
    • Sleep Medicine

    Background:

    • Hypnotic medications are frequently prescribed for sleep disturbances.
    • Assessing the safety and efficacy of hypnotics in different age groups is crucial.
    • Understanding drug pharmacokinetics is essential for predicting effects and side effects.

    Purpose of the Study:

    • To compare the hypnotic effects and next-day residual effects of chlormethiazole and temazepam in elderly and young women.
    • To evaluate the pharmacokinetic profiles of chlormethiazole and temazepam in these age groups.
    • To assess the safety and tolerability of both hypnotic agents.

    Main Methods:

    • A double-blind, placebo-controlled study involving healthy young and elderly women.
    • Administration of a single oral dose of 384 mg chlormethiazole, 20 mg temazepam, or placebo.
    • Assessment of psychomotor performance, sway, and pharmacokinetic parameters (plasma concentrations) at various time points.
    • Monitoring for adverse events, specifically nasal irritation.

    Main Results:

    • Both chlormethiazole and temazepam demonstrated effective hypnotic properties without significant next-day impairment in psychomotor performance or sway.
    • Chlormethiazole exhibited rapid absorption, distribution, and elimination, with minimal plasma concentrations at 11 hours.
    • Temazepam showed slower absorption and distribution, particularly in younger women, with substantial plasma levels persisting at 11 hours.
    • Nasal irritation was reported in 17 out of 20 subjects taking chlormethiazole; no adverse effects were noted with temazepam.

    Conclusions:

    • Chlormethiazole and temazepam can be safely used as hypnotics, allowing for interrupted sleep without residual next-day effects.
    • Pharmacokinetic differences between chlormethiazole and temazepam may influence their duration of action and potential for accumulation.
    • Elderly subjects may avoid hangover effects with these hypnotic agents, though chlormethiazole's nasal irritation warrants consideration.

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