C0ADMINISTRATION WITH CATECHOLAMINE-DEPLETING DRUGS SUCH AS RESERPINE, HAS POSSIBILITY OF ADDITIVE EFFECTS CAUSING HYPOTENSION AND/OR BRADYCARDIA.
COADMINISTRATION OF BETA-BLOCKERS AND ORAL OR INTRAVENOUS CALCIUM CHANNEL BLOCKERS MAY PRECIPITATE LEFT VENTRICULAR FAILURE, AND HYPOTENSION. IN PATIENTS WITH IMPAIRED CARDIAC FUNCTION, WHO ARE RECEIVING CALCIUM CHANNEL BLOCKERS, COADMINISTRATION SHOULD BE AVOIDED.
THE CONCOMITANT USE WITH DIGITALIS MAY HAVE ADDITIVE EFFECTS, PROLONGING A-V CONDUCTION TIME.
CAUTION SHOULD BE USED IN PATIENTS USING CONCOMITANT ADRENERGIC PSYCHOTROPIC DRUGS.