Sildenafil
Last Updated: 02/24/2026
Daily Tadalafil 5 mg Combined With On-Demand Sildenafil 100 mg for Treatment of Erectile Dysfunction in PDE-5I Non Responder Patients: A Multicenter Randomized, Double-Blind, Placebo-Controlled Trial
Summary: The goal of this clinical trial is to evaluate whether daily dosing with tadalafil 5 mg combined with on-demand sildenafil 100 mg can improve erectile function in men with erectile dysfunction (ED) who do not respond to PDE5 inhibitor alone. The main questions it aims to answer are: * Does the combination of daily tadalafil and on-demand sildenafil lead to a greater improvement in erectile functio...
The Effect of Oral Sildenafil on Exercise Capacity, Dyspnea and Cardiopulmonary Function in Chronic Obstructive Pulmonary Disease (COPD)
Summary: Chronic obstructive pulmonary disease (COPD) is a condition characterized by airway obstruction. Patients with COPD experience significant shortness of breath on exertion. The mechanisms responsible for shortness of breath on exertion are well understood in moderate and severe COPD, but, are poorly understood in mild COPD where symptoms appear disproportionate to the degree of airway obstruction. ...
Metabolomics of Cancers of the Upper Aerodigestive Tract
Summary: Metabolomics, thanks to advances in mass spectrometry, allows for the analysis of cellular metabolites to better understand biological processes. In oncology, it provides a global view of metabolic alterations in tumors and enables the classification of cancers based on various medical parameters using advanced statistical methods (machine learning). Its low cost and speed make it a promising appr...
Sildenafil to Reduce Vascular Remodeling During Left Ventricular Assist Device Support
Summary: Contemporary left ventricular assist device (LVAD) therapy improves survival during advanced heart failure but vascular aging develops rapidly leading to major adverse events including stroke and bleeding in nearly half of patients. In this study, the study team aims to investigate whether sildenafil pharmacotherapy, which has anti-fibrotic effects, can reduce vascular aging during LVAD support. A...
Local and Systemic Safety and Tolerability of Ascending Doses of TOP-N53, a Nitric Oxide (NO)-Releasing Phosphodiesterase-5 (PDE5) Inhibitor, Administered Topically, on Wounds in Patients With Digital Ulcers (DU) in Systemic Sclerosis (SSc) in an Open-label, Vehicle-controlled, Phase 2a, Multi-center Clinical Trial
Summary: The main goal of this clinical trial is to learn about how safe the new drug TOP-N53 solution is when it is applied to open wounds on the fingertip (digital ulcers) in people with an uncommon illness that results in hard, thickened areas of skin and additional problems with internal organs and blood vessels (systemic sclerosis). Another goal is to learn if different strengths of TOP-N53 can treat ...
IMProving DRug Dosing and Outcomes for Single VEntricle Patients With Fontan Associated Liver Disease
Summary: This is a single center, open-label, prospective, investigation to quantify the effects liver congestion and fibrosis has on hepatic drug metabolism and transport in children, adolescents, and young adults with Fontan circulation.
Sildenafil for Treatment of Urinary Incontinence in Patients With Spinal Cord Injuries
Summary: The goal of this study is to determine whether administration of sildenafil will decrease urine leakage in patients with spinal cord injuries.
Phase 2 Randomized Controlled Trial of Sildenafil Citrate for Treatment of Cerebrovascular Dysfunction in Chronic Traumatic Brain Injury
Summary: Traumatic Cerebral Vascular Injury (TCVI) is a common consequence of traumatic brain injury (TBI), including mild TBI (mTBI). TCVI is associated with poor recovery after TBI in animal models. TCVI can be measured non-invasively in humans, and therapies targeting TCVI are attractive candidates to ameliorate the consequences of TBI. Sildenafil potentiates nitric oxide (NO) dependent vasodilatation a...
A Phase 1 Food-Effect Study of 100 mg of Hezkue Turbo® (ASP-001.1, Sildenafil) Under Fed Versus 100 mg of Hezkue Turbo® (ASP-001.1, Sildenafil) Under Fasted Conditions in Healthy Adult Male Subjects
Summary: The objective of this phase 1 study is to evaluate the food effect of 100 mg Hezkue Turbo® (ASP-001.1, sildenafil) under fed versus 100 mg of Hezkue Turbo® (ASP-001.1, sildenafil) under fasted conditions in healthy adult male subjects
Sildenafil for Early Pulmonary Vascular Disease in Scleroderma
Summary: This is a Phase II randomized, double-blind, placebo-controlled trial of sildenafil in men and women with Scleroderma with mildly elevated pulmonary pressures (SSc-MEP) to determine whether sildenafil may be an effective treatment for SSc-MEP.
Efficacy of L- Arginine Versus Sildenafil in Management of Idiopathic Oligohydramnios
Summary: Based on previous studies, Both sildenafil and L-arginine helped to improve idiopathic oligohydramnios. In this study, Level of improvment of oligohydramnios will be compared. As well as, NICU admission to neonates of pregnancies complicated by idiopathic oligohydramnios. The end goal is to help physicians use the best drug for their patients.
Switching Sildenafil to Riociguat in Chronic Thromboembolic Pulmonary Hypertension After Balloon Pulmonary Angioplasty
Summary: This study was designed to investigate the safety and efficacy of replacing phosphodiesterase 5 inhibitors (PDE5i) with riociguat in patients with Chronic thromboembolic pulmonary hypertension (CTEPH) who have undergone pulmonary angioplasty (BPA) and remains symptomatic despite treatments with PDE5i.
Last Updated: 02/24/2026