Study Status: Withdrawn
Recruit Status: Withdrawn
Study Type: Interventional
Official Title: Tadalafil for Treatment of Priapism in Men With Sickle Cell Anemia
Brief Summary: This research is being done to compare the effect of tadalafil with placebo (an inactive substance that looks like the study drug, but should have no effect) on the frequency of recurrent priapism (prolonged erection, unassociated with sexual interest or desire) and the nature of sexual experiences in male patients with sickle cell disease.