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Showing 1–24 of 48 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: treprostinil inhalations Clear all
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 1, 2026, 5:25 PM EDT
Completed Phase 2 Interventional

Inhaled Treprostinil in Sarcoidosis Patients With Pulmonary Hypertension

NCT03814317
View directory record Official record
Conditions
Sarcoidosis, Precapillary Pulmonary Hypertension, Interstitial Lung Disease
Interventions
Inhaled Treprostinil
Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 99 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Sep 1, 2026, 5:25 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 1, 2026, 5:25 PM EDT
Completed Phase 4 Interventional Results available

A 48-week Study of the Effect of Dual Therapy (Inhaled Treprostinil and Tadafafil) Versus Monotherapy (Tadalafil).

NCT01305252
View directory record Official record
Conditions
Hypertension, Pulmonary
Interventions
treprostinil inhalations, tadalafil
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 69 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
2
States / cities
Stanford, California • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 1, 2017 · Synced Sep 1, 2026, 5:25 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Single Ascending Dose Study for Evaluation of Safety, Tolerability and Pharmacokinetics of L606

NCT04041648
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
L606 (Liposomal Treprostinil) Inhalation Solution 51ug, L606 Inhalation System, Placebo Solution
Drug · Device · Other
Lead sponsor
Pharmosa Biopharm Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Aug 4, 2025 · Synced Sep 1, 2026, 5:25 PM EDT
Completed Phase 3 Interventional

Study of Efficacy and Safety of Inhaled Treprostinil in Subjects With Idiopathic Pulmonary Fibrosis

NCT04708782
View directory record Official record
Conditions
Idiopathic Pulmonary Fibrosis, Interstitial Lung Disease
Interventions
Placebo, Inhaled Treprostinil, Treprostinil Ultrasonic Nebulizer
Drug · Device
Lead sponsor
United Therapeutics
Industry
Eligibility
40 Years and older
Enrollment
598 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
90
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 73 more
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced Sep 1, 2026, 5:25 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 1, 2026, 5:25 PM EDT
Completed Phase 3 Interventional Results available

Investigation of the Safety and Pharmacology of Dry Powder Inhalation of Treprostinil

NCT03399604
View directory record Official record
Conditions
Primary Pulmonary Hypertension
Interventions
LIQ861 Inhaled Treprostinil
Drug
Lead sponsor
Liquidia Technologies, Inc.
Industry
Eligibility
18 Years and older
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
38
States / cities
Phoenix, Arizona • Los Angeles, California • Sacramento, California + 30 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2024 · Synced Sep 1, 2026, 5:25 PM EDT
Recruiting Phase 2 Interventional

Inhaled Treprostinil (Tyvaso Nebulizer) For COPD Patients With Hypoxemia

NCT07037836
View directory record Official record
Conditions
COPD (Chronic Obstructive Pulmonary Disease), Hypoxemia
Interventions
Inhaled Treprostinil (Tyvaso Nebulizer)
Drug
Lead sponsor
Bastiaan Driehuys
Other
Eligibility
40 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Sep 1, 2026, 5:25 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 1, 2026, 5:25 PM EDT
Completed Phase 3 Interventional Results available

Clinical Investigation Into Inhaled Treprostinil Sodium in Patients With Severe Pulmonary Arterial Hypertension (PAH)

NCT00147199
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
Inhaled treprostinil, Placebo inhalation solution
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
235 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
15
States / cities
Birmingham, Alabama • Tucson, Arizona • La Jolla, California + 12 more
Source: ClinicalTrials.gov public record
Updated Jan 1, 2024 · Synced Sep 1, 2026, 5:25 PM EDT
Completed No phase listed Observational Results available

Study of Incidence of Respiratory Tract AEs in Patients Treated With Tyvaso® Compared to Other FDA Approved PAH Therapies

NCT01266265
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
inhaled prostacyclin, prostacyclin, subcutaneous and intravenous prostacyclin, oral ERA, oral PDE5 inhibitors
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
Not listed
Enrollment
1,333 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
88
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 65 more
Source: ClinicalTrials.gov public record
Updated Feb 16, 2016 · Synced Sep 1, 2026, 5:25 PM EDT
Terminated Phase 2 Interventional Results available

Effects of Inhaled Treprostinil Sodium for the Treatment of Pulmonary Hypertension Associated With Idiopathic Pulmonary Fibrosis

NCT00703339
View directory record Official record
Conditions
Idiopathic Pulmonary Fibrosis, Pulmonary Hypertension
Interventions
Treprostinil sodium for inhalation
Drug
Lead sponsor
Lung Biotechnology PBC
Industry
Eligibility
35 Years to 80 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
6
States / cities
La Jolla, California • Sacramento, California • Ann Arbor, Michigan + 3 more
Source: ClinicalTrials.gov public record
Updated May 10, 2018 · Synced Sep 1, 2026, 5:25 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 1, 2026, 5:25 PM EDT
Recruiting Phase 2 Interventional

A Study of Mosliciguat in Combination With Inhaled Treprostinil in PH-ILD

NCT07333183
View directory record Official record
Conditions
Pulmonary Hypertension, Interstitial Lung Disease (ILD), Lung Diseases, Vascular Diseases, Cardiovascular Diseases, Fibrosis
Interventions
inhaled mosliciguat, Dry Powder Inhaler
Drug · Device
Lead sponsor
Pulmovant, Inc.
Industry
Eligibility
18 Years to 85 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Kissimmee, Florida
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Sep 1, 2026, 5:25 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 1, 2026, 5:25 PM EDT
Completed Phase 2 Interventional Results available

Addition of UT-15C SR to Pulmonary Arterial Hypertension Patients Currently Receiving Tyvaso®

NCT01477333
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
UT-15C SR, Tyvaso Inhalation Solution
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
6
States / cities
Birmingham, Alabama • Rochester, Minnesota • St Louis, Missouri + 3 more
Source: ClinicalTrials.gov public record
Updated Dec 26, 2023 · Synced Sep 1, 2026, 5:25 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
5
States / cities
Scottsdale, Arizona • Tampa, Florida • Chicago, Illinois + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2026 · Synced Sep 1, 2026, 5:25 PM EDT
Completed Phase 4 Interventional Results available

Safety Evaluation of Inhaled Treprostinil Administration Following Transition From Inhaled Ventavis in Pulmonary Arterial Hypertension (PAH) Subjects

NCT00741819
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Inhaled treprostinil
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
15
States / cities
Birmingham, Alabama • La Jolla, California • Los Angeles, California + 9 more
Source: ClinicalTrials.gov public record
Updated Feb 19, 2013 · Synced Sep 1, 2026, 5:25 PM EDT
Completed No phase listed Observational Results available

Patient Global Impression Questions for Activity-Induced Symptoms in Participants With PAH

NCT03888365
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Treprostinil, Non-Treprostinil PAH Medications
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
43 participants
Timeline
2019
U.S. locations
10
States / cities
Birmingham, Alabama • Beverly Hills, California • Santa Barbara, California + 7 more
Source: ClinicalTrials.gov public record
Updated Mar 15, 2021 · Synced Sep 1, 2026, 5:25 PM EDT
Active, not recruiting Phase 3 Interventional

Extension Study for Participants in LIQ861 Trials to Evaluate the Long-term Safety of Dry Powder Inhalation of Treprostinil

NCT03992755
View directory record Official record
Conditions
Primary Pulmonary Hypertension
Interventions
LIQ861 Inhaled Treprostinil
Drug
Lead sponsor
Liquidia Technologies, Inc.
Industry
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
25
States / cities
Phoenix, Arizona • Los Angeles, California • Sacramento, California + 19 more
Source: ClinicalTrials.gov public record
Updated Jan 28, 2025 · Synced Sep 1, 2026, 5:25 PM EDT
Terminated Phase 2Phase 3 Interventional Results available

An Open Label Extension Study to Evaluate Inhaled Treprostinil in Adult PH With ILD Including CPFE

NCT02633293
View directory record Official record
Conditions
Pulmonary Hypertension, Interstitial Lung Disease, Combined Pulmonary Fibrosis and Emphysema
Interventions
Inhaled Treprostinil
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
243 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
91
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 67 more
Source: ClinicalTrials.gov public record
Updated Dec 1, 2022 · Synced Sep 1, 2026, 5:25 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 1, 2026, 5:25 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 1, 2026, 5:25 PM EDT