Regularly evaluate men on treatment for prostate cancer risk including PSA testing. Establish new PSA baseline after 6 mth of treatment. Monitor PSA values regularly thereafter. Perform digital rectal exam & other prostate cancer evaluations on BPH patients prior to initiating therapy & periodically thereafter. Risk of orthostatic/symptomatic hypotension. Risk of intraoperative floppy iris syndrome during cataract surgery. Concomitant use w/ PDE5 inhibitors; moderate CYP3A4 (eg, erythromycin) or strong (eg, paroxetine) or moderate CYP2D6 inhibitor, combination of both CYP3A4 & CYP2D6 inhibitor. Not recommended w/ strong CYP3A4 inhibitor (eg, ketoconazole). Poor CYP2D6 metabolisers. Patients w/ liver disease. May affect ability to drive & use machines as symptoms related to orthostatic hypotension eg, dizziness can possibly occur. Women & childn must avoid contact w/ leaking cap.