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Showing 25–47 of 23 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Oral Treprostinil Clear all
Recruiting Phase 3 Interventional

A Study to Evaluate the Efficacy and Safety of Once Daily Treprostinil Palmitil Inhalation Powder (TPIP) in Participants With Pulmonary Arterial Hypertension (PAH)

NCT07481981
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Treprostinil Palmitil Inhalation Powder, Placebo
Drug
Lead sponsor
Insmed Incorporated
Industry
Eligibility
18 Years to 75 Years
Enrollment
344 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
8
States / cities
Los Angeles, California • Santa Barbara, California • Torrance, California + 5 more
Source: ClinicalTrials.gov public record
Updated Sep 15, 2026 · Synced Sep 26, 2026, 2:27 PM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy of Oral Treprostinil in the Treatment of Calcinosis in Patients With Systemic Sclerosis

NCT02663895
View directory record Official record
Conditions
Systemic Sclerosis, Calcinosis
Interventions
Oral treprostinil
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Jun 9, 2021 · Synced Sep 26, 2026, 2:27 PM EDT
Completed Phase 3 Interventional Results available

An Open-Label, Long-Term Study of Oral Treprostinil in Subjects With Pulmonary Arterial Hypertension

NCT01560637
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
UT-15C (treprostinil diolamine)
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
471 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
38
States / cities
Phoenix, Arizona • Tucson, Arizona • Fresno, California + 33 more
Source: ClinicalTrials.gov public record
Updated Jun 1, 2022 · Synced Sep 26, 2026, 2:27 PM EDT
Completed Phase 1 Interventional

Pharmacokinetics of Oral Treprostinil in Patients With Systemic Sclerosis

NCT00848939
View directory record Official record
Conditions
Systemic Sclerosis
Interventions
treprostinil diethanolamine
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
3
States / cities
Baltimore, Maryland • Boston, Massachusetts • Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 22, 2012 · Synced Sep 26, 2026, 2:27 PM EDT
Not yet recruiting Phase 4 Interventional

A Study of Inhaled Treprostinil (LIQ861) in Adults With Pulmonary Arterial Hypertension Transitioning From Oral Selexipag

NCT07759804
View directory record Official record
Conditions
Pulmonary Arterial Hypertension (PAH)
Interventions
LIQ861 (treprostinil) inhalation powder
Combination Product
Lead sponsor
Liquidia Technologies, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Columbus, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 26, 2026, 2:27 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 26, 2026, 2:27 PM EDT
Active, not recruiting Phase 2Phase 3 Interventional

An Extension Study of Treprostinil Palmitil Inhalation Powder (TPIP) for Pulmonary Arterial Hypertension (PAH)

NCT05649748
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Treprostinil Palmitil, Placebo
Drug
Lead sponsor
Insmed Incorporated
Industry
Eligibility
18 Years and older
Enrollment
91 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
6
States / cities
Jacksonville, Florida • Tampa, Florida • Chicago, Illinois + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Sep 26, 2026, 2:27 PM EDT
Recruiting Phase 3 Interventional

A Phase 3 Study to Evaluate the Safety and Efficacy L606 in Participants With PH-ILD

NCT07285655
View directory record Official record
Conditions
Pulmonary Hypertension Due to Lung Disease (Disorder)
Interventions
L606, Placebo
Drug
Lead sponsor
Liquidia Technologies, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
344 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
12
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Los Angeles, California + 9 more
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Sep 26, 2026, 2:27 PM EDT
Completed Phase 2 Interventional Results available

A Dose Response Study of UT-15C SR in Patients With Exercise-Induced Pulmonary Hypertension

NCT01104870
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
UT-15C
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
9
States / cities
Phoenix, Arizona • Tucson, Arizona • Los Angeles, California + 5 more
Source: ClinicalTrials.gov public record
Updated May 26, 2016 · Synced Sep 26, 2026, 2:27 PM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Oral UT-15C Tablets to Treat Pulmonary Arterial Hypertension

NCT00887978
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
UT-15C SR, Placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
310 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
40
States / cities
Birmingham, Alabama • Phoenix, Arizona • Fresno, California + 33 more
Source: ClinicalTrials.gov public record
Updated Jan 14, 2013 · Synced Sep 26, 2026, 2:27 PM EDT
Recruiting Phase 3 Interventional

An Open-Label Extension Study of Treprostinil Palmitil Inhalation Powder (TPIP) in Participants With Pulmonary Hypertension Associated With Interstitial Lung Disease (PH-ILD)

NCT07234032
View directory record Official record
Conditions
Pulmonary Hypertension, Interstitial Lung Disease
Interventions
Treprostinil Palmitil Inhalation Powder, Placebo
Drug
Lead sponsor
Insmed Incorporated
Industry
Eligibility
18 Years and older
Enrollment
344 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
2
States / cities
Naples, Florida • Bend, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Sep 26, 2026, 2:27 PM EDT
Withdrawn Phase 3 Interventional

FREEDOM DR: Oral Treprostinil in Combination With an Endothelin Receptor Antagonist (ERA) and/or a Phosphodiesterase-5 (PDE-5) Inhibitor or as Monotherapy for the Treatment of Pulmonary Arterial Hypertension (PAH)

NCT00760916
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
UT-15C 1 mg, UT-15C 0.25 mg, UT-15C 5 mg, Placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 70 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
26
States / cities
Birmingham, Alabama • Los Angeles, California • Sacramento, California + 19 more
Source: ClinicalTrials.gov public record
Updated Jan 29, 2013 · Synced Sep 26, 2026, 2:27 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Esomeprazole on the Pharmacokinetics of Oral Treprostinil

NCT00963027
View directory record Official record
Conditions
Hypertension, Pulmonary, Pulmonary Arterial Hypertension
Interventions
Treprostinil diethanolamine, Esomeprazole
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 55 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Mar 7, 2010 · Synced Sep 26, 2026, 2:27 PM EDT
Recruiting Phase 3 Interventional

Efficacy and Safety Study of Treprostinil Palmitil Inhalation Powder (TPIP) in Participants With Pulmonary Hypertension Associated With Interstitial Lung Disease (PH-ILD)

NCT07179380
View directory record Official record
Conditions
Pulmonary Hypertension, Interstitial Lung Disease
Interventions
Treprostinil Palmitil Inhalation Powder, Placebo
Drug
Lead sponsor
Insmed Incorporated
Industry
Eligibility
18 Years and older
Enrollment
344 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
11
States / cities
Los Angeles, California • Santa Barbara, California • Gainesville, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 26, 2026, 2:27 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacokinetic Interaction of Oral Treprostinil and Ethanol in Healthy Volunteers

NCT02318758
View directory record Official record
Conditions
Healthy
Interventions
UT-15C, ethanol
Drug · Other
Lead sponsor
United Therapeutics
Industry
Eligibility
21 Years to 55 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Mar 23, 2015 · Synced Sep 26, 2026, 2:27 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effect of Renal Impairment on the Pharmacokinetics of Oral Treprostinil

NCT01131845
View directory record Official record
Conditions
Pulmonary Arterial Hypertension, Renal Dysfunction
Interventions
UT-15C SR (treprostinil diethanolamine)
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 79 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated May 16, 2012 · Synced Sep 26, 2026, 2:27 PM EDT
Completed Phase 3 Interventional Results available

An Open-Label Extension Trial of UT-15C Sustained-release (SR) in Subjects With Pulmonary Arterial Hypertension

NCT01027949
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Oral Treprostinil
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
12 Years and older
Enrollment
894 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2020
U.S. locations
61
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 46 more
Source: ClinicalTrials.gov public record
Updated May 9, 2021 · Synced Sep 26, 2026, 2:27 PM EDT
Completed Phase 3 Interventional Results available

Phase III Clinical Worsening Study of UT-15C in Subjects With PAH Receiving Background Oral Monotherapy

NCT01560624
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Treprostinil Diolamine, Placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
690 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
40
States / cities
Phoenix, Arizona • Tucson, Arizona • Fresno, California + 33 more
Source: ClinicalTrials.gov public record
Updated Feb 12, 2020 · Synced Sep 26, 2026, 2:27 PM EDT
Completed Phase 2 Interventional Results available

Safety, Tolerability, and Pharmacokinetics of Oral Treprostinil in Pediatric PAH Patients Aged 7 to 17 Years

NCT02276872
View directory record Official record
Conditions
PAH
Interventions
oral treprostinil
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
7 Years to 17 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
9
States / cities
Palo Alto, California • San Francisco, California • Aurora, Colorado + 6 more
Source: ClinicalTrials.gov public record
Updated Mar 29, 2025 · Synced Sep 26, 2026, 2:27 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 26, 2026, 2:27 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 26, 2026, 2:27 PM EDT
Active, not recruiting Phase 4 Interventional

A Study of a Mean Pulmonary Artery Pressure-Targeted Approach With Early and Rapid Treprostinil Therapy to Reverse Right Ventricular Remodeling in Participants With Pulmonary Arterial Hypertension

NCT05203510
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Parenteral Treprostinil, Oral Treprostinil
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
28
States / cities
Phoenix, Arizona • Fresno, California • Los Angeles, California + 23 more
Source: ClinicalTrials.gov public record
Updated Dec 8, 2025 · Synced Sep 26, 2026, 2:27 PM EDT
Terminated Phase 3 Interventional Results available

Oral Treprostinil in Subjects With Pulmonary Hypertension Associated With Heart Failure With Preserved Ejection Fraction

NCT03037580
View directory record Official record
Conditions
Pulmonary Hypertension, Heart Failure With Preserved Ejection Fraction
Interventions
Oral treprostinil, Placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 85 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
82
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 66 more
Source: ClinicalTrials.gov public record
Updated Nov 9, 2020 · Synced Sep 26, 2026, 2:27 PM EDT