50 mg about 1 hr before sexual intercourse. May be increased to 100 mg or decreased to 25 mg. Max dosing frequency is once daily.
Administration
May be taken with or without food.
Contraindications
Nitrates. Significant decrease in BP w/ isosorbide mononitrate or SL glyceryl trinitrate given 1 hr after administration than w/ nitrate given alone.
Special Precautions
Hepatic or severe renal impairment. Dose reduction may be needed. Penile tissue damage & permanent loss of potency may occur in patients w/ anatomical penis deformation or hematological disorders predisposing to priapism. Discontinue in cases of sudden visual & hearing loss.
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