<p>Concomitant intake of Bilastine and Ketoconazole or Erythromycin or Diltiazem increased C max of Bilastine. The psychomotor performance after concomitant intake of alcohol and Bilastine was similar to that observed after intake of alcohol and placebo. Concomitant intake of Bilastine and Lorazepam 3 mg for 8 days did not potentiate the depressant CNS effects of Lorazepam.</p>