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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Treprostinil Clear all
Terminated Phase 3 Interventional Results available

Open-label Extension of Oral Treprostinil in Subjects With PH Associated With HFpEF

NCT03043651
View directory record Official record
Conditions
Pulmonary Hypertension Associated With HFpEF
Interventions
Oral treprostinil
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 85 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
82
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 66 more
Source: ClinicalTrials.gov public record
Updated Oct 21, 2020 · Synced Sep 20, 2026, 6:03 PM EDT
Terminated No phase listed Observational

Impact of Inhaled Treprostinil Sodium on Ventilation Perfusion Matching

NCT01494896
View directory record Official record
Conditions
Pulmonary Arterial Hypertension, Chronic Obstructive Pulmonary Disease
Interventions
Not listed
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 80 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
3
States / cities
Jacksonville, Florida • Weston, Florida
Source: ClinicalTrials.gov public record
Updated May 6, 2015 · Synced Sep 20, 2026, 6:03 PM EDT
Recruiting Phase 3 Interventional

Trial to Evaluate Parenteral Treprostinil and Riociguat on Right Ventriculo-vascular Coupling and Morphology in Those With Advanced PAH

NCT04062565
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Treprostinil Injectable Product, Riociguat Pill
Drug
Lead sponsor
University of Arizona
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Feb 19, 2025 · Synced Sep 20, 2026, 6:03 PM EDT
Terminated Phase 4 Interventional

Transitioning To IV Remodulin From Ventavis in Patients With PAH: Safety, Efficacy and Treatment Satisfaction

NCT00458042
View directory record Official record
Conditions
Hypertension, Pulmonary
Interventions
treprostinil sodium
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007
U.S. locations
2
States / cities
La Jolla, California • San Diego, California
Source: ClinicalTrials.gov public record
Updated Nov 11, 2007 · Synced Sep 20, 2026, 6:03 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Comparative Bioavailability of Treprostinil Diethanolamine Manufactured by Two Independent Facilities

NCT01165476
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Treprostinil diethanolamine
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 55 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Apr 18, 2011 · Synced Sep 20, 2026, 6:03 PM EDT
Completed Phase 1 Interventional

Safety and Efficacy of Treprostinil in Ischemia and Reperfusion Injury in Adult Orthotopic Liver Transplantation

NCT01481974
View directory record Official record
Conditions
Ischemia Reperfusion Injury
Interventions
Treprostinil
Drug
Lead sponsor
Abhinav Humar, MD
Other
Eligibility
18 Years to 70 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 14, 2023 · Synced Sep 20, 2026, 6:03 PM EDT
Completed Phase 1 Interventional Results available

Open-label, Clinical Study to Evaluate the Safety and Tolerability of TreT in Subjects With PAH Currently Using Tyvaso

NCT03950739
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Treprostinil Inhalation Powder
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
16
States / cities
Birmingham, Alabama • Los Angeles, California • Jacksonville, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2024 · Synced Sep 20, 2026, 6:03 PM EDT
Recruiting Phase 1Phase 2 Interventional

Safety and Efficacy of Treprostinil (Remodulin®) In Reducing Ischemia-Reperfusion Injury During Kidney Transplantation

NCT04005469
View directory record Official record
Conditions
Ischemia Reperfusion Injury, Delayed Graft Function
Interventions
Treprostinil
Drug
Lead sponsor
Rhode Island Hospital
Other
Eligibility
18 Years to 75 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2028
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Apr 22, 2026 · Synced Sep 20, 2026, 6:03 PM EDT
Completed No phase listed Observational Results available

A Study to Assess the Safety and Efficacy of Treprostinil to Facilitate Liver Transplantation in Patients With Portopulmonary Hypertension

NCT01028651
View directory record Official record
Conditions
Portopulmonary Hypertension, Pulmonary Arterial Hypertension, Pulmonary Hypertension
Interventions
Treprostinil
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
Not listed
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
4
States / cities
Los Angeles, California • Atlanta, Georgia • Boston, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 23, 2017 · Synced Sep 20, 2026, 6:03 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study of Treprostinil to Treat Interstitial Lung Disease Pulmonary Hypertension

NCT05564637
View directory record Official record
Conditions
Pulmonary Arterial Hypertension, Interstitial Lung Disease, Healthy Adults
Interventions
Treprostinil, Right Heart Catheterization (RHC) while exercising, Optional Muscle Biopsy
Drug · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 2, 2025 · Synced Sep 20, 2026, 6:03 PM EDT
Terminated Phase 3 Interventional Results available

A Phase 3 Adaptive Study to Evaluate the Safety and Efficacy of Inhaled Treprostinil in Participants With Pulmonary Hypertension (PH) Due to Chronic Obstructive Pulmonary Disease (COPD)

NCT03496623
View directory record Official record
Conditions
Pulmonary Hypertension, Chronic Obstructive Pulmonary Disease
Interventions
Inhaled treprostinil solution, Placebo solution
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
188 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
65
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 53 more
Source: ClinicalTrials.gov public record
Updated Nov 23, 2023 · Synced Sep 20, 2026, 6:03 PM EDT
Completed Phase 3 Interventional Results available

FREEDOM - M: Oral Treprostinil as Monotherapy for the Treatment of Pulmonary Arterial Hypertension (PAH)

NCT00325403
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
Oral treprostinil (UT-15C) Sustained Release Tablets, Placebo
Drug · Other
Lead sponsor
United Therapeutics
Industry
Eligibility
12 Years to 75 Years
Enrollment
349 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
43
States / cities
Birmingham, Alabama • Phoenix, Arizona • Fresno, California + 34 more
Source: ClinicalTrials.gov public record
Updated Jan 2, 2024 · Synced Sep 20, 2026, 6:03 PM EDT
Enrolling by invitation Phase 3 Interventional

Extension Study of Inhaled Treprostinil in Subjects With Fibrotic Lung Disease

NCT04905693
View directory record Official record
Conditions
Idiopathic Pulmonary Fibrosis, Interstitial Lung Disease, Progressive Pulmonary Fibrosis
Interventions
Inhaled Treprostinil, Treprostinil Ultrasonic Nebulizer
Drug · Device
Lead sponsor
United Therapeutics
Industry
Eligibility
40 Years and older
Enrollment
1,850 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2029
U.S. locations
84
States / cities
Birmingham, Alabama • Franklin, Arizona • Phoenix, Arizona + 69 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 20, 2026, 6:03 PM EDT
Completed Phase 4 Interventional Results available

Safety, Efficacy and Treatment Satisfaction in Patients With PAH Rapidly Switched From Epoprostenol to Remodulin

NCT00373360
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
treprostinil sodium
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 6, 2013 · Synced Sep 20, 2026, 6:03 PM EDT
Terminated Phase 2 Interventional Results available

Pulmonary Rehab in Chronic Obstructive Pulmonary Disease (COPD): Response to Tyvaso

NCT02178566
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease (COPD)
Interventions
Inhaled Treprostinil
Drug
Lead sponsor
Inova Health Care Services
Other
Eligibility
40 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Falls Church, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 11, 2022 · Synced Sep 20, 2026, 6:03 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Assess the Relative Bioavailability After a Single Inhalation Administration of Treprostinil Palmitil Inhalation Powder (TPIP) Formulation 2 (F2) to TPIP Formulation 3 (F3) in Healthy Participants

NCT07102316
View directory record Official record
Conditions
Healthy Volunteers
Interventions
TPIP F2, TPIP F3
Drug
Lead sponsor
Insmed Incorporated
Industry
Eligibility
18 Years to 45 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Nov 20, 2025 · Synced Sep 20, 2026, 6:03 PM EDT
Withdrawn Phase 2Phase 3 Interventional

Safety and Efficacy of Perioperative Remodulin® in Orthotopic Liver Transplant Recipients

NCT01884038
View directory record Official record
Conditions
Liver Transplant
Interventions
treprostinil sodium, Placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 18, 2023 · Synced Sep 20, 2026, 6:03 PM EDT
Terminated Phase 2 Interventional Results available

Acute Effects of Inhaled Treprostinil in Fontan Patients

NCT02769624
View directory record Official record
Conditions
Congenital Heart Disease
Interventions
Treprostinil, Placebo
Drug
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 28, 2020 · Synced Sep 20, 2026, 6:03 PM EDT
Completed Phase 2 Interventional

Safety Study of UT-15C SR (Oral Treprostinil) in Patients Undergoing a Lower Limb Endovascular Procedure

NCT00651885
View directory record Official record
Conditions
Critical Limb Ischemia
Interventions
treprostinil dienthanolmine sustained release, Placebo
Drug
Lead sponsor
Ochsner Health System
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Apr 23, 2023 · Synced Sep 20, 2026, 6:03 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Three Times Daily Dosing of UT-15C

NCT01746485
View directory record Official record
Conditions
Healthy
Interventions
UT-15C
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 55 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Dec 11, 2012 · Synced Sep 20, 2026, 6:03 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Bioavailability Study Comparing Treprostinil Diethanolamine Oral Tablets and Oral Solution in Healthy Volunteers

NCT01172496
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
treprostinil diethanolamine
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 55 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2010
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Oct 12, 2010 · Synced Sep 20, 2026, 6:03 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Pharmacokinetics (PK) and Safety of a Single Dose of Treprostinil Palmitil Inhalation Powder (TPIP) in Participants With Normal Hepatic Function and Participants With Hepatic Impairment

NCT07643155
View directory record Official record
Conditions
Hepatic Impairment
Interventions
Treprostinil Palmitil Inhalation Powder
Drug
Lead sponsor
Insmed Incorporated
Industry
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
4
States / cities
Lake Forest, California • San Dimas, California • Orlando, Florida + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 10, 2026 · Synced Sep 20, 2026, 6:03 PM EDT
Completed Phase 3 Interventional Results available

A Pharmacokinetic Substudy of the TDE-PH-304 Protocol

NCT01934582
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
UT-15C SR, treprostinil diethanolamine
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
12 Years to 75 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jan 2, 2024 · Synced Sep 20, 2026, 6:03 PM EDT
Terminated Phase 4 Interventional Results available

Safety, Efficacy, and Treatment Satisfaction Switching From Flolan to Remodulin Using the Crono Five Ambulatory Pump in Patients With PAH

NCT00439946
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
treprostinil, Crono Five ambulatory pump
Drug · Device
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
3
States / cities
San Francisco, California • New York, New York • Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jan 2, 2024 · Synced Sep 20, 2026, 6:03 PM EDT