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Study to Compare the Blood Levels of Sildenafil Following Administration of an Experimental Tablet vs. the Conventional Oral Tablet in Healthy Subjects. PHASE1 This study to will compare the blood levels of sildenafil following adminis...
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Pfizer Investigational Site
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Mono vs. Dual Therapy for Pediatric Pulmonary Arterial Hypertension PHASE3 The investigators' central hypothesis is that early combination therapy wit...
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Children's Hospital Colorado
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Functional CT Assessment of Pulmonary Arterial Dysfunction in Smoking Associated Emphysema PHASE4 This study will use dual energy x-ray computed tomography (DECT) to evaluat...
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Active Not Recruiting
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University of Iowa
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Study of Sildenafil in Patient With Heart Failure. PHASE3 The purpose of this study is to determine if sildenafil (Viagra) improves e...
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Massachusetts General Hospital
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Nitro Oxide Inhalation Continued With Sildenafil on Neonatal Persistent Pulmonary Hypertension NA Nitro Oxide (NO) inhalation was recognized as an effect treatment of Neonat...
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Department of Pediatrics,Daping hospital
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A Randomized Double Blind, Placebo Controlled Balanced 4-Way Crossover Study To Assess The Efficacy Of Single Oral Doses PHASE2 The primary aim of this study is to assess how effective PF-00592379 is in ...
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Pfizer Investigational Site
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PDE5-Inhibition With Sildenafil in Chronic Heart Failure PHASE3 To test the hypothesis that long-term PDE5-inhibition by overexpressing the...
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Marco Guazzi, MD, PhD University of Milano
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Induction of Migraine Aura With Sildenafil EARLY_PHASE1 In a double blind placebo-controlled cross-over study the effect of Sildena...
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Department of Neurology, Herlev-Gentofte Hospital
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Study of Incidence of Respiratory Tract AEs in Patients Treated With Tyvaso® Compared to Other FDA Approved PAH Therapies N/A A surveillance of respiratory tract related adverse events in patients trea...
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Cardiovascular Associates, P.C.
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The Efficacy and Safety of Sildenafil Citrate Used in Combination With Intravenous Epoprostenol in PAH PHASE3 Determination of the effects of sildenafil citrate and epoprostenol when us...
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Pfizer Investigational Site
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