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Medline ® Abstract for Reference 45

of 'Treatment of male sexual dysfunction'

Time to onset of action of vardenafil: a retrospective analysis of the pivotal trials for the orodispersible and film-coated tablet formulations.
Debruyne FM, Gittelman M, Sperling H, Börner M, Beneke M
J Sex Med. 2011 Oct;8(10):2912-23. Epub 2011 Aug 30.
INTRODUCTION: Patients and physicians consider a rapid onset of action to be an important attribute of oral pharmacotherapy for erectile dysfunction.
AIM: To investigate the time to onset of action of a new orodispersible tablet (ODT) formulation of vardenafil.
METHODS: A post hoc integrated analysis was performed on data from two 12-week, double-blind, multicenter, randomized, parallel-group, placebo-controlled phase III trials of 10 mg vardenafil ODT. Data for the vardenafil film-coated tablet were generated from a retrospective integrated analysis at week 12 of four double-blind, multicenter, randomized, parallel-group, fixed-dose, placebo-controlled phase III trials. Time intervals (in 15-, 30-, and 60-minute increments, up to≥6 hours after study medication intake) were determined for the period between dosing and start of sexual activity (with the intention of intercourse).
MAIN OUTCOME MEASURES: The total number of sexualintercourse attempts and Sexual Encounter Profile question 3 (SEP3) success rates were calculated per time interval.
RESULTS: Within 15 minutes postdosing, mean per-patient SEP3 success rates were 62.5% (vardenafil ODT) vs. 29.4% (placebo), with corresponding overall SEP3 success rates of 59.8% and 38.2%. In this time interval, 5.3% vs. 2.8% of all sexual activity attempts were initiated by subjects taking vardenafil ODT (n = 89) or placebo (n = 62), respectively. At 16-30 minutes postdosing, SEP3 success rates were 65.3% and 32.6% (mean per-patient) and 70.2% and 51.0% (overall) for vardenafil ODT vs. placebo, respectively, with a corresponding 10.4% and 8.7% of all sexual activity attempts being made by subjects taking vardenafil ODT (n = 170) or placebo (n = 118). Comparable results were observed for vardenafil 10 and 20 mg film-coated tablet at corresponding time intervals.
CONCLUSIONS: Vardenafil ODT shows a rapid onset of action comparable with that of vardenafil film-coated tablet. In those men who begin sexual activity within 30 minutes after dosing, the majority of sexual attempts lead to successful intercourse.
Andros Mannenkliniek, Arnhem, the Netherlands. f.debruyne@urologicconsultancy.com