RT Book, Section A1 Wells, Barbara G. A1 DiPiro, Joseph T. A1 Schwinghammer, Terry L. A1 DiPiro, Cecily V. SR Print(0) ID 1144736950 T1 Erectile Dysfunction T2 Pharmacotherapy Quick Guide YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9781259586439 LK accesspharmacy.mhmedical.com/content.aspx?aid=1144736950 RD 2024/04/19 AB Erectile dysfunction (ED) is the persistent failure (minimum of 3 months) to achieve a penile erection suitable for sexual intercourse. Patients often refer to it as impotence.