To review the pharmacology, pharmacokinetics, safety, and efficacy of avanafil and evaluate relevant clinical trial data.A MEDLINE, International Pharmaceutical Abstracts, ClinicalTrials.gov, and Google Scholar searches (1966 to July 2013) were conducted using the key words: avanafil, erectile dysfunction, and phosphodiesterase type 5 (PDE5) inhibitor.Articles evaluating avanafil for erectile dysfunction (ED) published in English and using human subjects were selected