Erectile dysfunction of neurogenic origin secondary to spinal cord injury Initially 1.25 mcg, then 2.5 mcg as 2nd dose, followed by 5 mcg as 3rd dose. May be increased in increments of 5 mcg until optimal dose is achieved.
Erectile dysfunction of vasculogenic, psychogenic or mixed aetiology Initially 2.5 mcg, then 5 mcg as 2nd dose for partial response & 7.5 mcg if no response. May be increased in increments of 5-10 mcg until optimal dose is achieved. Max therapy: Not >once daily & not >3 times wkly.
Aid to aetiology diagnosis Subject w/o evidence of neurological dysfunction 20 mcg.
Subject w/ evidence of neurological dysfunction Initially 5 mcg, not to exceed 10 mcg.