Geriatric psychopharmacology.
When selecting a psychotropic agent for an elderly patient, the physician must consider such factors as impaired renal and hepatic metabolism, decreased protein-binding of drugs and increased central nervous system sensitivity. Accordingly, compounds should be selected on the basis of their pharmacokinetic and side-effect profiles. High-potency antipsychotics, because of their lower degree of anticholinergic activity, are usually preferable to the low-potency agents. Cardiac toxicity is an important consideration in selecting an antidepressant.