Adult men 10 mg at least 30 min prior to anticipated sexual activity. Max dose frequency: Once daily regimen: 2.5 mg once daily at approx the same time each day, may be increased to 5 mg once daily based on individual efficacy & tolerability.
Renal impairment: CrCl 31-50 mL/min As needed use: Initially 5 mg once daily. Max: 10 mg every 48 hr,
<30 mL/min or on hemodialysis As needed use: Max: 5 mg every 72 hr.
Hepatic impairment As needed use: 10 mg prior to anticipated sexual activity.
Patient taking CYP3A4 inhibitor As needed use: Max: 10 mg once every 72 hr. Once daily use: Max: 2.5 mg.