A randomized, double-blind, placebo-controlled, cross-over study to assess the efficacy of tadalafil (Cialis®) in the treatment of erectile dysfunction following three-dimensional conformal external-beam radiotherapy for prostatic carcinoma

Conclusions: Tadalafil is an effective treatment for erectile dysfunction after 3DCRT for prostatic carcinoma with successful intercourse reported in almost 50% of the patients, and it is well tolerated.