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Updated: Aug 24, 2026

Treatment Model for Young Patients with Psychogenic Erectile Dysfunction and Resultant Infertility
Published on: May 30, 2025
Sustained efficacy and tolerability with vardenafil over 2 years of treatment in men with erectile dysfunction
C Stief1, H Porst, I Sáenz De Tejada
1Department of Urology, Medizinische Hochschule, Hannover, Germany. stief.christian@mh-hannover.de
Abstract:
This randomised, double-blind study assessed the long-term efficacy and tolerability of vardenafil 10 and 20 mg in men with erectile dysfunction (ED). A total of 566 men who completed an initial 12-month treatment period entered a 12-month extension. In these men, both doses of vardenafil produced improvement in scores for the 'erectile function' Domain of the International Index of Erectile Function, evident from week 4 and maintained through 2 years. Sexual Encounter Profile diary responses indicated that following treatment, penetration was achieved on 92-94% of attempts and erections that lasted long enough for successful intercourse were achieved on 87-89% of attempts. In response to the General Assessment Question, 90-92% of patients reported improved erections with vardenafil. Most treatment-emergent events were mild and transient with no cardiovascular safety concerns. These results support the long-term efficacy, reliability and tolerability of vardenafil 10 and 20 mg in men with ED.
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