Discontinue treatment if angina pectoris recurs or worsens. Postural hypotension may occur; hypotension in elderly. Patients w/ symptomatic orthostatic hypotension; acquired or congenital QT prolongation; coronary disease. Priapism; intraoperative floppy iris syndrome. Inform ophth surgeons in advance of cataract surgery of current or past use of α
1-blockers. Sugar intolerance. Concomitant use w/ antihypertensives or nitrates; QT-prolonging medications. Postural hypotension, vertigo, dizzy sensations, asthenia, visual disturbances that may affect ability to drive & use machines. Pregnancy & lactation. Childn 2-16 yr. Elderly.