Influence of repeated administration of cimetidine on the pharmacokinetics and pharmacodynamics of adinazolam in healthy subjects.

Hulhoven, R.;Desager, Jean-Pierre;Cox, S;Harvengt, C.
(1988) European Journal of Clinical Pharmacology — Vol. 35, n° 1, p. 59-64 (1988)

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  • Hulhoven, R.
    Author
  • Desager, Jean-PierreUCLouvain
    Author
  • Cox, S
    Author
  • Harvengt, C.
    Author
Abstract
Adinazolam is a new triazolobenzodiazepine bearing an alkyl-amino side chain. A cross-over double-blind placebo controlled study was carried out in 12 healthy volunteers, in order to check the possible interaction between cimetidine and adinazolam after repeated co-administration. Cimetidine or placebo were given during 17 days. Beginning on Day 8 of each treatment, adinazolam was given in the increasing doses following sequence of doses for 3 days: 10 mg b.i.d., 20 mg b.i.d. and 20 mg t.i.d. A pharmacokinetic and pharmacodynamic study was performed on the third day at each dose. A wash-out of three weeks was included between the two treatments. Cimetidine increased significantly the AUC values of both adinazolam and N-desmethyladinazolam, reduced the oral clearance of adinazolam, and prolonged adinazolam's half-life. The digit symbol substitution test was significantly affected at each dose level while the manual dexterity was marginally impaired by adinazolam plus cimetidine. Saftee-up interview and Clyde mood scale indicated an increased sedation under adinazolam plus cimetidine in four subjects.
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Hulhoven, R., Desager, J.-P., Cox, S., & Harvengt, C. (1988). Influence of repeated administration of cimetidine on the pharmacokinetics and pharmacodynamics of adinazolam in healthy subjects. European Journal of Clinical Pharmacology, 35(1), 59-64. https://doi.org/10.1007/BF00555508 (Original work published 1988)