Effects on psychological performance of the benzodiazepine, loprazolam, alone and with alcohol

British Journal of Clinical Pharmacology
I C McManusR G Priest

Abstract

The effects of a new 1,4 benzodiazepine hypnotic, loprazolam (1.0 mg) and alcohol (0.7 g/kg body weight) were investigated over a 15 h period in eight healthy male medical students, in a placebo controlled balanced design. Loprazolam when given alone impaired performance on a manual dexterity task, on a test of mental arithmetic, on a tracking task and it impaired memory as judged by the name and address memory test. Given alone, alcohol impaired performance on the simple reaction time task and on the tracking task. Performance on the memory test and choice reaction time test actually improved. No evidence was found suggesting a potentiation of effect when loprazolam and alcohol were given together. However, (a) on the manual dexterity task the alcohol, having no effect on its own, alleviated the loprazolam-induced impairment. (b) In the tracking task both alcohol and loprazolam impaired performance when given alone but not when given together. (c) The memory test was impaired by loprazolam, improved by alcohol and the effect of the combination is the expected sum of the two effects. Similarly for the arithmetic task the effect of the combination of the alcohol and loprazolam effects is the expected sum of the independent effec...Continue Reading

References

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Citations

Oct 24, 2003·Brain and Cognition·Frances Heritage Martin, David A T Siddle
Jan 1, 1984·British Journal of Clinical Pharmacology·M J Mattila
Jan 25, 2019·Journal of Psychopharmacology·Nadine BernhardtUlrich S Zimmermann
Oct 1, 1989·The British Journal of Psychiatry : the Journal of Mental Science·W A BotrosZ Y Samir

Related Concepts

Triazulenone, (Z)-isomer
Ethanol
Benzodiazepines
Benzodiazepinones
Memory
Psychomotor Performance
Reaction Time
Sleep, Slow-Wave
Anti-Anxiety Effect

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