Not a curative treatment for angina attacks, nor indicated as an initial treatment for unstable angina or MI, nor in the pre-hospital phase or during the 1st days of hospitalization. May cause or worsen Parkinsonian symptoms (tremor, akinesia, hypertonia) especially in the elderly. W/draw treatment if movement disorders eg, Parkinsonian symptoms, restless leg syndrome, tremors, gait, & instability occurs. Falls related to gait instability or hypotension may occur. Moderate renal impairment. Avoid during pregnancy. Not recommended during lactation. Childn <18 yr. Elderly >75 yr.