| Pentoxifylline, Atorvastatin, and Vitamin E in Treating Patients With Erectile Dysfunction After Radiation Therapy for Prostate Cancer (NCT03830164) | M.D. Anderson Cancer Center | 2019-11-20 |
| PROPPER Prospective Registry of Outcomes With Penile Prosthesis (NCT01383018) | Boston Scientific Corporation | 2011-06-13 |
| Can Hyperbaric Oxygen Improve Erectile Function Following Surgery for Prostate Cancer (NCT00906269) | Hartford Hospital | 2009-07-01 |
| Safety and Clinical Effectiveness of 2 Lower Dose Combined PDE5i's vs. Single Maximal Dose PDE5i (NCT00498680) | Rambam Health Care Campus | 2007-03-01 |
| Tadalafil Taken Daily Compared to Placebo on Improvement of Getting and Maintaining an Erection and Sexual Quality of Life (NCT00422734) | Eli Lilly and Company | 2006-11-01 |
| The Management of Erectile Dysfunction With Placebo Only (NCT00882934) | Rio de Janeiro State University | 2006-10-01 |
| Improvement of Erectile Dysfunction by Fluvastatin in Patients With Cardiovascular Risk Factors (NCT00382161) | University Hospital, Saarland | 2006-10-01 |
| A Study Of The Safety and Efficacy Of Viagra In Men With Erectile Dysfunction Who Do Not Self Identify. (NCT00343200) | Pfizer's Upjohn has merged with Mylan to form Viatris Inc. | 2006-07-01 |
| Effect of Vardenafil on Blood Pressure in Patients With Erectile Dysfunction Who Received Concomitant Doxazosin GITS (NCT00517179) | Hospital Authority, Hong Kong | 2006-04-01 |
| A Randomized Double Blind, Placebo Controlled Balanced 4-Way Crossover Study To Assess The Efficacy Of Single Oral Doses (NCT00273416) | Pfizer | 2006-01-01 |
| Study to Evaluate Viagra's Ability to Provide a Better Sexual Experience Through Quality Erections and Satisfaction (NCT00245258) | Pfizer's Upjohn has merged with Mylan to form Viatris Inc. | 2005-11-01 |
| Assessment Of Sildenafil On Erectile Function And Intercourse Satisfaction And To Validate A New Subject Questionnaire (NCT00147628) | Pfizer's Upjohn has merged with Mylan to form Viatris Inc. | 2005-11-01 |
| Effect of Sildenafil on Endothelial Function (NCT00297544) | Rambam Health Care Campus | 2005-10-01 |
| Titration Study to Evaluate Efficacy and Satisfaction of Viagra in Men With Erectile Function. (NCT00249730) | Pfizer's Upjohn has merged with Mylan to form Viatris Inc. | 2005-10-01 |
| Evaluation of the Index of Sexual Life Questionnaire (NCT00245596) | Pfizer's Upjohn has merged with Mylan to form Viatris Inc. | 2005-10-01 |
| Study Of Men With Mild To Moderate Erectile Dysfunction To Evaluate The Efficacy Of Viagra 8 Hours Post-Dose (NCT00143260) | Pfizer's Upjohn has merged with Mylan to form Viatris Inc. | 2005-08-01 |
| Mild To Moderate Erectile Dysfunction Study (NCT00137072) | Pfizer's Upjohn has merged with Mylan to form Viatris Inc. | 2005-04-01 |
| Assessment Of Duration Of Action, Safety & Toleration Of UK369,003 and Cialis In Patients With Erectile Dysfunction (NCT00174486) | Pfizer | 2005-02-01 |
| Assessment of Onset, Safety & Toleration of UK-369,003 in Male Erectile Dysfunction (NCT00141349) | Pfizer | 2005-02-01 |
| QEQ Treatment Responsiveness Evaluation Study (NCT00151463) | Pfizer's Upjohn has merged with Mylan to form Viatris Inc. | 2005-01-01 |
| Study the Safety and Effectiveness of Tadalafil in Men With Diabetes Who Have Problems Getting and Keeping an Erection (NCT00547183) | Eli Lilly and Company | 2004-10-01 |
| Effect of Tadalafil on the Quality of Life and Sexual Life in Erectile Dysfunction (NCT00422578) | Eli Lilly and Company | 2004-10-01 |
| Use of Sildenafil (Viagra) in Diabetic Men With Erectile Dysfunction: the Impact on Blood Vessels (NCT00199563) | London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's | 2004-08-01 |
| Study to Determine a Preference Between Sildenafil or Tadalafil Treatment for Problems Getting an Erection (NCT00547352) | Eli Lilly and Company | 2004-06-01 |
| Efficacy Study Measuring The Impact Of Treatment With Viagra On The Depressive Symptoms Of Men With Erectile Dysfunction (NCT00159809) | Pfizer's Upjohn has merged with Mylan to form Viatris Inc. | 2004-03-01 |
| Study the Safety and Effectiveness of Tadalafil in Men With Problems Getting or Maintaining an Erection When Taken Prior to Desiring an Erection (NCT00547495) | Eli Lilly and Company | 2004-03-01 |
| Effectiveness and Safety of Viagra in Men With ED and LUTS Due to Benign Prostatic Hyperplasia (BPH) (NCT00143221) | Pfizer's Upjohn has merged with Mylan to form Viatris Inc. | 2004-03-01 |
| Evaluate the Effects of GPI 1485 on Erectile Function Following Bilateral Nerve-Sparing Prostatectomy (NCT00090376) | Eisai Inc. | 2003-12-01 |
| Study For Which Treatment, Tadalafil or Sildenafil, is Preferred For Problems Getting or Maintaining an Erection (NCT00547092) | Eli Lilly and Company | 2003-10-01 |
| Effect Of A Treatment Optimization Program To Improve Satisfaction With Viagra (NCT00159848) | Pfizer | 2003-09-01 |
| To Determine Effect and Safety of Tadalafil Taken by Men of Different Races and With Different Diseases When Needed for Erections (NCT00547417) | Eli Lilly and Company | 2003-07-01 |
| Determine If the Stress That Comes With Not Developing an Erection Affects Tadalafil Effects (NCT00547599) | Eli Lilly and Company | 2003-04-01 |
| Determine Safety and Effectiveness of Tadalafil in Asian Men When Taken as Needed for Getting and Keeping an Erection (NCT00547573) | Eli Lilly and Company | 2003-04-01 |
| Studying the Preference of Tadalafil to Sildenafil in Men With Problems Getting an Erection Across Nations (NCT00547287) | Eli Lilly and Company | 2002-11-01 |
| To Determine How Different Doses of Tadalafil Work on Getting and Keeping an Erection 26 or 36 Hours After Taking (NCT00547508) | Eli Lilly and Company | 2002-10-01 |
| A Study Evaluating the Efficacy and Safety of Sildenafil in Men With Traumatic Spinal Cord Injury and Erectile Dysfunction (NCT00654082) | Pfizer's Upjohn has merged with Mylan to form Viatris Inc. | 2002-09-01 |