Palpitations, tachycardia, sweating, nausea & vomiting, resp difficulty, pallor, dizziness, weakness, tremor, headache, apprehension, nervousness, anxiety; cardiac arrhythmias. Psychomotor agitation, disorientation, impaired memory, assaultive behavior, panic, hallucination, suicidal or homocidal tendencies, psychosis w/ schizophrenic-like disorder & paranoid delusion. May cause change in ECG. Ventricular ectopy, HTN, vasoconstriction. Angina pectoris.