Not indicated for treatment of HTN. BP reduction can occur in individual cases during treatment, may result to syncope (rarely). Patient should sit or lie down at 1st signs of orthostatic hypotension (dizziness, weakness) until symptoms disappear. Intra-operative floppy iris syndrome (IFIS) during cataract surgery. Perform digital rectal exam, & when necessary, PSA determination before treatment & at regular intervals afterwards. Patients should be aware that dizziness can occur. No data on whether it can adversely affect ability to drive or operate machines. Caution in patients w/ severe renal impairment (CrCl <10 mL/min). Not applicable in pregnancy; intended for male patients only.