Dry mouth, constipation (occasionally leading to paralytic ileus), urinary retention, blurred vision & disturbances in accommodation, increased IOP & hyperthermia; drowsiness; headache, peripheral neuropathy, tremor, ataxia, epileptiform seizures, tinnitus & occasional extrapyramidal symptoms including dysarthria; confusion, hallucinations, or delirium may occur particularly in elderly, & mania or hypomania, & behavioural disturbances (particularly in childn).