Sedation; antimuscarinic effects, CNS depression and disturbances; occasionally, paradoxical CNS stimulation; psychomotor impairment; headache; palpitations and arrhythmias; convulsions, sweating, myalgia, paraesthesias, extrapyramidal symptoms, tremor, sleep and GI disturbances, hypersensitivity reactions and blood dyscrasias; hypotension; hair loss; tinnitus.