Ernst Ulbrich

The efficacy and tolerability of vardenafil, a new, oral, selective phosphodiesterase type 5 inhibitor, in patients with erectile dysfunction: the first at-home clinical trial

H. Porst, R. Rosen, Harin Padma-Nathan et al. · International Journal of Impotence Research · 2001 · 324 citations

Urology, Erectile Dysfunction, Medicine +3

A Randomised, Placebo-Controlled Study to Assess the Efficacy of Twice-Daily Vardenafil in the Treatment of Lower Urinary Tract Symptoms Secondary to Benign Prostatic Hyperplasia

Christian G. Stief, Hartmut Porst, D. Neuser et al. · European Urology · 2008 · 277 citations

Urology, Placebo-controlled Study, Benign Prostatic Hyperplasia +4

Sustained efficacy and tolerability with vardenafil over 2 years of treatment in men with erectile dysfunction

Christian G. Stief, H. Porst, I Sáenz de Tejada et al. · International Journal of Clinical Practice · 2004 · 83 citations

Erectile Function, Sexual Health, Urology +7

Earliest Time to Onset of Action Leading to Successful Intercourse with Vardenafil Determined in an At-Home Setting: A Randomized, Double-Blind, Placebo-Controlled Trial

Francesco Montorsi, Harin Padma-Nathan, Hartwig Schwaibold et al. · The Journal of Sexual Medicine · 2004 · 60 citations

Comparable Efficacy of Once-Daily Versus On-Demand Vardenafil in Men with Mild-to-Moderate Erectile Dysfunction: Findings of the RESTORE Study

J. Zumbé, Hartmut Porst, Frank Sommer et al. · European Urology · 2008 · 56 citations

Restore Study, Urology, Erectile Dysfunction +4