title: The efficacy and safety of a topical alprostadil cream, Alprox-TD, for the treatment of erectile dysfunction: two phase 2 studies in mild-to-moderate and severe ED.
abstract: In two multicenter, placebo controlled, phase 2 studies, patients with mild-to-moderate (n=161, Study 1) or severe (n=142, Study 2) erectile dysfunction (ED) were randomized to receive placebo, 0.05, 0.1, or 0.2 mg (Study 1) or placebo, 0.1, 0.2, or 0.3 mg (Study 2) of topically applied alprostadil (containing a proprietary skin permeation enhancer). The primary efficacy end point in both studies was the change in erectile function (EF) score from baseline to final visit. The changes from baseline for EF scores were -0.8+/-1.1, 1.8+/-1.1, 0.7+/-1.2, and 3.7+/-1.2 (P<0.01; Study 1) and 2.7+/-1.3, 6.29+/-1.4, 6.49+/-1.5, and 9.44+/-1.5 (P<0.001; Study 2) for ascending dose groups in each study. Topical alprostadil was well tolerated with the most common adverse event being urogenital pain. These results suggest this topical alprostadil formulation may be a potentially useful agent for the treatment of ED.
authors.affiliation: The Male Clinic, Beverly Hills, CA, USA. chrisste@aol.com
authors.forename: H
authors.initials: H
authors.lastname: Padma-Nathan
authors.forename: C
authors.initials: C
authors.lastname: Steidle
authors.forename: S
authors.initials: S
authors.lastname: Salem
authors.forename: N
authors.initials: N
authors.lastname: Tayse
authors.forename: J
authors.initials: J
authors.lastname: Yeager
authors.forename: R
authors.initials: R
authors.lastname: Harning
mesh_terms: D000287:Administration, Topical; D000328:Adult; D000368:Aged; D000527:Alprostadil / Q000008:administration & dosage* / Q000009:adverse effects; D003075:Coitus; D007172:Erectile Dysfunction / Q000188:drug therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D012720:Severity of Illness Index; D016896:Treatment Outcome; D014665:Vasodilator Agents / Q000008:administration & dosage* / Q000009:adverse effects
chemical_list: D014665:Vasodilator Agents; D000527:Alprostadil