Headache, dizziness, drowsiness, agitation, dry mouth, insomnia, somnolence, asthenia, tachycardia, nervousness, vertigo, nausea, GI discomfort. Skin rashes w/ or w/o irritation; urinary retention, prostatic enlargement; fear, anxiety, tenseness, restlessness, tremor, weakness, pallor, resp difficulty, dysuria, convulsions, CNS depression, arrhythmias, CV collapse w/ hypotension.