Amlodipine-induced delirium in a patient with ischemic stroke.

Amlodipine is a dihydropyridine calcium antagonist drug with distinctive pharmacokinetic characteristics that seem to be attributable to a high degree of ionization. Delirium is a neuropsychiatric syndrome recognized as a marker for increased health care costs, morbidity, mortality, and institutionalization that often complicates acute physical illness in elderly people. This case is the first report concerning amlodipine use as a cause of delirium.