Psychomotor and subjective effects of bilastine, hydroxyzine, and cetirizine, in combination with alcohol: a randomized, double-blind, crossover, and positive-controlled and placebo-controlled Phase I clinical trials

• Published in: Human psychopharmacology Vol. 29; no. 2; pp. 120 - 132
• Main Authors: García-Gea, Consuelo, Martínez, Joan, Ballester, Maria Rosa, Gich, Ignasi, Valiente, Román, Antonijoan, Rosa Maria
• Format: Journal Article
• Language: English
• Published: England Blackwell Publishing Ltd 01.03.2014; Wiley Subscription Services, Inc
• Subjects: Adolescent; Adult; Affect - drug effects; alcohol; Alcohol Drinking; Benzimidazoles - adverse effects; Benzimidazoles - pharmacology; bilastine; Central Nervous System Depressants - adverse effects; Central Nervous System Depressants - pharmacology; cetirizine; Cetirizine - adverse effects; Cetirizine - pharmacology; CNS effects; Cross-Over Studies; Double-Blind Method; Drug Interactions; Ethanol - adverse effects; Ethanol - pharmacology; Female; healthy volunteers; Histamine Antagonists - adverse effects; Histamine Antagonists - pharmacology; Humans; hydroxizyne; Hydroxyzine - adverse effects; Hydroxyzine - pharmacology; Male; Piperidines - adverse effects; Piperidines - pharmacology; Psychomotor Performance - drug effects; Sex Factors; Young Adult; alcohol; cetirizine; CNS effects; bilastine; hydroxizyne; healthy volunteers
• ISSN: 0885-6222; 1099-1077
• DOI: 10.1002/hup.2378

Objective The aim of this study was to compare the effects of concomitant administration of alcohol and bilastine versus alcohol alone on the central nervous system. Methods Twenty‐four healthy young volunteers of both sexes participated in a randomized, double‐blind, double‐dummy, crossover, and positive‐controlled and placebo‐controlled clinical trials. At 1‐week intervals, subjects received six different treatments: (i) placebo; (ii) alcohol 0.8 g/kg alone (ALC); (iii) ALC in combination with: bilastine 20 mg (B20 + A); (iv) bilastine 80 mg (B80 + A); (v) cetirizine 10 mg (CET + A); and (vi) hydroxyzine 25 mg (HYD + A). Psychomotor performance tests (fine motor, finger tapping, nystagmus, critical flicker‐fusion frequency, temporal estimation, ‘d2’ cancellation, and simple reaction time) and subjective self‐reports (drunkenness, drowsiness, mental slowness, clumsiness, anger, attentiveness, competence, happiness, hostility, interest, and extroversion) were carried out at baseline and multiple points thereafter. Results All active treatments induced a significant psychomotor impairment. The greatest and most lasting impairment was observed with HYD + A followed by B80 + A and CET + A. In contrast, objective measures showed less impairment with B20 + A and ALC, both with a similar magnitude. Self‐reports showed a subjective perception of performance impairment in all active treatments. Conclusion Concomitant administration of bilastine (at therapeutic dose) and alcohol does not produce greater central nervous system depressant effects than ACL alone. Copyright © 2014 John Wiley & Sons, Ltd.