Licht M R
Section of Sexual Dysfunction and Prosthetic Surgery, Cleveland Clinic Florida, Ft. Lauderdale, USA.
Cleve Clin J Med. 1998 Jun;65(6):301-4. doi: 10.3949/ccjm.65.6.301.
Sildenafil, the first oral drug for treating male erectile dysfunction, appears effective and well tolerated. However, more time and experience will be needed to establish this drug's true efficacy and safety.