Interestingly, the more frequently the men reported taking ED medications, the more likely they were to report lower erectile confidence and other signs of sexual dysfunction cialis price With Embase 2003 to Jun 2019 , MEDLINE 2003 to Jun 2019 , and Cochrane Central Register of Controlled Trials, we undertook a retrieval to examine published randomized controlled trials RCTs , which investigated long-term tadalafil 5 mg once-daily for ED at least 6 months of treatment