Midazolam and triazolam in out‐patients: a double‐blind comparison of hypnotic efficacy.

Midazolam (15 mg) was compared with temazepam (30 mg) in a randomized, double-blind, parallel group study. An initial screening period was followed by 3 days of placebo baseline, 4 to 12 weeks of nightly oral use of the medication and a 4-day placebo withdrawal period. One hundred seventy-five patients with chronic insomnia participated in this multicenter outpatient study. Because the elimination half-life of midazolam, a new trizolobenzodiazepine hypnotic, is short (1.3-2.2 hr) compared to temazepam's (12-16 hr), more problems with tolerance and rebound insomnia were expected to occur. Hypnotic efficacy (increased total sleep time, decreased wake time, and decreased sleep latency) was demonstrated for both medications over the entire 3-month period without the development of tolerance. In fact, if anything, efficacy increased with time on medication, suggesting possible facilitation or "inverse tolerance" effect. On withdrawal, sleep was improved compared with baseline, suggesting partial resolution of the insomniac condition rather than rebound insomnia. These effects were both statistically and clinically significant for midazolam, with 16% to 50% improvement in sleep measures. The results of this study suggest that patients with chronic insomnia may benefit from 30 to 90 days of treatment. A three-factor model that separates pharmacologic from behavioral and psychologic effects of hypnotics was proposed to explain these results in part.

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Efficacy Without Tolerance or Rebound Insomnia for Midazolam and Temazepam After Use for One to Three Months

Allen

Mendels

Nevins

et al. 1987

The Journal of Clinical Pharma

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Midazolam: The First Water‐soluble Benzodiazepine; Pharmacology, Pharmacokinetics and Efficacy in Insomnia and Anesthesia

Kanto

1985

Pharmacotherapy

180

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Midazolam is a 1,4-benzodiazepine derivative with a unique chemical structure: depending on environmental pH, the drug can produce highly water-soluble salts (pH less than 4) or exist in lipophilic diazepine ring-closed form (pH greater than 4). This characteristic contributes to rapid onset of action and to good local tolerance after parenteral administration. After both oral and parenteral administration, midazolam has a fast absorption rate and is rapidly excreted, with a half-life of only about 2 hours. A reasonably good correlation has been found between plasma levels and clinical effects, indicating a fast but brief response. As a hypnotic, midazolam is mainly indicated in insomniac patients with difficulties in falling asleep or having a pathologic sleep pattern during the first half of the night. No marked hangover effects are present the next morning. In anesthesiology, midazolam appears to be a useful, short-acting, sedative-anxiolytic and amnesic premedicant after both oral and parenteral administration. In minor surgery, however, the slow, unpredictable onset and variable duration of action, as compared with thiopental, may inhibit its routine use as an induction agent, especially in young patients, without heavy premedication. In major surgery, midazolam is an alternative to thiopental for induction of anesthesia in spite of its slow, variable induction time. Its advantages include good cardiovascular stability, transient and mild respiratory depression, low frequency of venous irritation, production of anterograde amnesia and short duration of action in comparison with other benzodiazepines.

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Bretazenil modulates sleep EEG and nocturnal hormone secretion in normal men

et al. 1995

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Preclinical data suggest that the imidazodiazepinone derivative bretazenil (Ro 16-6028) has anxiolytic and anticonvulsant properties with only weak sedative effects. We examined the influence of oral administration of 1 mg bretazenil on the sleep EEG and the concomitant nocturnal secretion of cortisol, growth hormone and prolactin in ten healthy young men. After bretazenil we found a significant increase in stage 2 sleep and a significant reduction in stage 3 sleep. REM latency was prolonged. Spectral analysis of sleep-EEG power revealed a decrease in delta and in theta power and an increase in sigma power. We found no significant influence on sleep onset latency or on intermittent wakefulness. Bretazenil prompted a significant decrease in cortisol secretion and a significant increase in prolactin release. It had no major influence on growth hormone secretion.

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Midazolam and triazolam in out‐patients: a double‐blind comparison of hypnotic efficacy.

Cited by 4 publications

References 11 publications

Efficacy Without Tolerance or Rebound Insomnia for Midazolam and Temazepam After Use for One to Three Months

Efficacy Without Tolerance or Rebound Insomnia for Midazolam and Temazepam After Use for One to Three Months

Midazolam: The First Water‐soluble Benzodiazepine; Pharmacology, Pharmacokinetics and Efficacy in Insomnia and Anesthesia

Bretazenil modulates sleep EEG and nocturnal hormone secretion in normal men

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