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Differential effects of the 1,4 and 1,5 benzodiazepines on performance in healthy man (1979)

Differential effects of the 1,4 and 1,5 benzodiazepines on performance in healthy man (1979)

  1. Jatelka
    British Journal of Clinical Pharmacology 1979;7 Suppl 1:83S-84S

    Nicholson AN

    1 The immediate and residual effects on performance of benzodiazepines differ, and the differences are important in the use of these drugs.

    2. Diazepam and its hydroxylated metabolites, temazepam and oxazepam, each possess hypnotic activity, and have effects on performance limited to the sleep period. The demethylated metabolite of diazepam, nordiazepam, and its precursor, potassium clorazepate, which also possess hypnotic activity, have a longer duration of action, although the next day anxiolytic effect is accompanied by only minimal effects on performance. The 1.5 benzodiazepine, clobazam, seems to have minimal immediate effects on performance.

    3 Diazepam and its hydroxylated metabolites, temazepam and oxazepam, would be useful in the management of insomnia without psychopathology in those cases in which residual effects on performance must be avoided. Nordiazepam and potassium clorazepate would be appropriate for insomnia secondary to day-time anxiety, and clobazam may be useful as a day-time anxiolytic.

    4 It is emphasized that more work needs to be carried out on the effects of anxiolytics on performance before one can be certain that ingestion during the day would be without any deleterious effects on skilled work.