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Showing 25–47 of 23 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: Oral treprostinil Clear all
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 28, 2026, 6:49 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 28, 2026, 6:49 PM EDT
Terminated Phase 2 Interventional Results available

Open-Label Study of Oral Treprostinil in Digital Ulcers

NCT00848107
View directory record Official record
Conditions
Systemic Sclerosis
Interventions
treprostinil diethanolamine
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
115 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
22
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Los Angeles, California + 19 more
Source: ClinicalTrials.gov public record
Updated Jun 17, 2024 · Synced Sep 28, 2026, 6:49 PM EDT
Recruiting Phase 4 Interventional

Open Label Treprostinil Raynaud's Study

NCT07112183
View directory record Official record
Conditions
Raynaud's Disease, Raynaud Phenomena, Raynauds
Interventions
Oral treprostinil (UT-15C) sustained release tablets
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 23, 2026 · Synced Sep 28, 2026, 6:49 PM EDT
Completed Phase 2 Interventional

A Study to Evaluate the Efficacy, Safety and Pharmacokinetics of Treprostinil Palmitil Inhalation Powder in Participants With Pulmonary Arterial Hypertension

NCT05147805
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Treprostinil Palmitil, Placebo
Drug
Lead sponsor
Insmed Incorporated
Industry
Eligibility
18 Years to 75 Years
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
21
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Tucson, Arizona + 16 more
Source: ClinicalTrials.gov public record
Updated Mar 29, 2026 · Synced Sep 28, 2026, 6:49 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 28, 2026, 6:49 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacokinetic Linearity and Comparative Bioavailability of Treprostinil Diethanolamine

NCT01153386
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
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Aug 22, 2010 · Synced Sep 28, 2026, 6:49 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 28, 2026, 6:49 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 28, 2026, 6:49 PM EDT
Withdrawn Phase 2 Interventional

Telemonitoring to Treat Group 2 Pulmonary Hypertension

NCT04882774
View directory record Official record
Conditions
Pulmonary Hypertension Due to Left Heart Disease
Interventions
Treprostinil Diolamine
Drug
Lead sponsor
Mardi Gomberg -Maitland MD, MSc
Other
Eligibility
18 Years to 85 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
3
States / cities
Washington D.C., District of Columbia • Columbus, Ohio • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 5, 2023 · Synced Sep 28, 2026, 6:49 PM EDT
Completed Phase 2 Interventional Results available

Remodulin® to Oral Treprostinil Transition

NCT01588405
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
UT-15C SR
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
15 Years to 80 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
6
States / cities
Phoenix, Arizona • Tucson, Arizona • St Louis, Missouri + 3 more
Source: ClinicalTrials.gov public record
Updated May 15, 2016 · Synced Sep 28, 2026, 6:49 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 28, 2026, 6:49 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 28, 2026, 6:49 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 28, 2026, 6:49 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 28, 2026, 6:49 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 28, 2026, 6:49 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 28, 2026, 6:49 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 28, 2026, 6:49 PM EDT
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 28, 2026, 6:49 PM EDT
Completed Phase 3 Interventional Results available

Beraprost-314d Added-on to Tyvaso® (BEAT)

NCT01908699
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Beraprost Sodium 314d Modified Release Tablets, Placebo
Drug
Lead sponsor
Lung Biotechnology PBC
Industry
Eligibility
18 Years to 80 Years
Enrollment
273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
69
States / cities
Birmingham, Alabama • Beverly Hills, California • Fountain Valley, California + 55 more
Source: ClinicalTrials.gov public record
Updated Aug 2, 2020 · Synced Sep 28, 2026, 6:49 PM EDT
Completed Phase 3 Interventional Results available

Study to Assess the Tolerability and the Safety of the Transition From Inhaled Treprostinil to Oral Selexipag in Patients With Pulmonary Arterial Hypertension

NCT02471183
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Selexipag
Drug
Lead sponsor
Actelion
Industry
Eligibility
18 Years to 75 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
15
States / cities
La Jolla, California • San Francisco, California • Torrance, California + 11 more
Source: ClinicalTrials.gov public record
Updated Jan 22, 2018 · Synced Sep 28, 2026, 6:49 PM EDT
Terminated Phase 4 Interventional Results available

Treprostinil Combined With Tadalafil for Pulmonary Hypertension

NCT01302444
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Tadalafil, Placebo
Drug
Lead sponsor
Rhode Island Hospital
Other
Eligibility
18 Years to 80 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
9
States / cities
Portland, Maine • Boston, Massachusetts • Newark, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated Jul 25, 2013 · Synced Sep 28, 2026, 6:49 PM EDT
Completed Phase 2 Interventional Results available

Digital Ischemic Lesions in Scleroderma Treated With Oral Treprostinil Diethanolamine

NCT00775463
View directory record Official record
Conditions
Systemic Sclerosis, Scleroderma
Interventions
treprostinil diethanolamine, placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
24
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Los Angeles, California + 21 more
Source: ClinicalTrials.gov public record
Updated Dec 27, 2023 · Synced Sep 28, 2026, 6:49 PM EDT