- Anticholinergic --> blurred vision, urinary retention, dry mouth, confusion
- Anti-adrenergic --> orthostasis, dizziness
- Histaminic --> sedation, weight gain
- Blocking of sodium channels --> conduction abnormalities, arrhythmias, heart block
- Monitor EKG: age >50, history of cardiac risk factors
- Sexual dysfunction, weight gain, myoclonus (can cause seizures in overdose) ;