Independent directory Public ClinicalTrials.gov records United States
Clear filters
ClinicalTrials.gov public records Last synced Sep 26, 2026, 4:18 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
Cardiovascular Diseases, Cardiovascular Risk Factor, Vasoconstriction
Interventions
Control (Phenylephrine), Phenylephrine + Apocynin, Phenylephrine + Allopurinol, Phenylephrine + Tempol
Drug
Lead sponsor
The University of Texas at Arlington
Other
Eligibility
18 Years to 35 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Arlington, Texas
Conditions
Thrombosis
Interventions
Apixaban IR, Apixaban MR1, Apixaban MR2, Apixaban MR3
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 45 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
New Haven, Connecticut
Completed Early Phase 1 Interventional Accepts healthy volunteers

Mechanisms of Vasovagal Syncope

NCT01791816
Conditions
Vasovagal Syncope, Postural Tachycardia Syndrome
Interventions
Phenylephrine, L-Ng-monomethyl Arginine (L-NMMA)
Drug
Lead sponsor
New York Medical College
Other
Eligibility
14 Years to 29 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2022
U.S. locations
1
States / cities
Hawthorne, New York
Conditions
Postdural Puncture Headache
Interventions
Sphenopalatine Ganglion Block, Placebo
Procedure
Lead sponsor
University of Arkansas
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Little Rock, Arkansas
Conditions
Healthy Volunteers
Interventions
Sequence 1: PCI-32765, Sequence 2: PCI-32765, Sequence 3: PCI-32765, Sequence 4: PCI-32765, Sequence 5: PCI-32765
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 55 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Neptune City, New Jersey
Conditions
Healthy
Interventions
Caprylic Triglyceride Oil, AC-1202, Axona, AC-1204
Drug
Lead sponsor
Cerecin
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Tempe, Arizona
Conditions
Cesarean Delivery
Interventions
Metoclopramide, Phenylephrine infusion, Combination Group
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
306 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Durham, North Carolina
Conditions
Anesthesia
Interventions
Tetracaine HCl 3% and Oxymetazoline HCl 0.05%
Drug
Lead sponsor
St. Renatus, LLC
Industry
Eligibility
3 Years to 17 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Los Angeles, California
Conditions
Hypotension
Interventions
Phenylephrine
Drug
Lead sponsor
West-Ward Pharmaceutical
Industry
Eligibility
12 Years to 16 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2024
U.S. locations
10
States / cities
Wilmington, Delaware • Washington D.C., District of Columbia • Miami, Florida + 7 more
Conditions
Healthy
Interventions
Relacorilant, Placebo to relacorilant, Moxifloxacin
Drug
Lead sponsor
Corcept Therapeutics
Industry
Eligibility
18 Years to 55 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Springfield, Missouri
Conditions
Parkinson's Disease, Dyskinesia
Interventions
Eltoprazine HCl, Placebo
Drug
Lead sponsor
Amarantus BioScience Holdings, Inc.
Industry
Eligibility
30 Years to 85 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Boca Raton, Florida
Conditions
Hypotension, Arterial Stiffness
Interventions
SphygmoCor system
Device
Lead sponsor
University of Iowa
Other
Eligibility
50 Years to 85 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
Iowa City, Iowa
Conditions
Hypotension
Interventions
Phenylephrine bolus, phenylephrine infusion
Drug
Lead sponsor
IWK Health Centre
Other
Eligibility
18 Years and older · Female only
Enrollment
178 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Durham, North Carolina
Completed Not applicable Interventional Accepts healthy volunteers

Exercise in Health and Chronic Obstructive Pulmonary Disease

NCT02300064
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
Knee-extensor exercise test, Exercise test with restricting/releasing blood flow, Exercise test with variable oxygen concentration and MRI, Exercise test with oral antioxidant or placebo cocktail
Other
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
185 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2016
U.S. locations
1
States / cities
Salt Lake City, Utah
Conditions
Acute Lung Injury
Interventions
Diuresis (furosemide) part I, Fluid Bolus (crystalloid or albumin), Vasopressors (Norepinephrine, Vasopressin, Phenylephrine, Epinephrine), Dobutamine, Concentrate all drips and nutrition, Diuresis (furosemide) part II, Dialysis
Drug · Other · Procedure
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
3
States / cities
Clackamas, Oregon • Portland, Oregon
Recruiting Phase 2 Interventional Accepts healthy volunteers

Role of Sympathetic Overactivity and Angiotensin II in PTSD and CV

NCT02560805
Conditions
Stress Disorders, Post-Traumatic
Interventions
Microneurography, Combat virtual reality video clip, Handgrip Exercise, Cold Pressor Test (CPT), Sodium Nitroprusside (SNP), Phenylephrine, Losartan, Atenolol, Transcutaneous Vagal Nerve Stimulation (tVNS), Sham Transcutaneous Vagal Nerve Stimulation (tVNS)
Procedure · Behavioral · Drug + 1 more
Lead sponsor
Emory University
Other
Eligibility
18 Years to 65 Years
Enrollment
134 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2027
U.S. locations
1
States / cities
Decatur, Georgia
Conditions
Asthma
Interventions
ONO-6950, Montelukast, Placebo
Drug
Lead sponsor
Ono Pharma USA Inc
Industry
Eligibility
18 Years to 60 Years
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2012
U.S. locations
9
States / cities
Los Angeles, California • San Diego, California • Denver, Colorado + 6 more
Conditions
Asthma
Interventions
Mometasone furoate/formoterol fumarate (MFF), Formoterol fumarate 12 μg pMDI (F12M), Formoterol fumarate 12 μg DPI (F12D), Placebo to F12D, Placebo to F12M/MFF
Drug
Lead sponsor
Novartis
Industry
Eligibility
5 Years to 11 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
6
States / cities
Mobile, Alabama • Huntington Beach, California • Orange, California + 3 more
Conditions
Hypertension, Hypertension, Essential
Interventions
Angiotensin (1-7), Trimethaphan, Phenylephrine
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 60 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2023
U.S. locations
1
States / cities
Nashville, Tennessee
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Exploration of Pupil Dilation in Horner's Patients Taking Flomax

NCT03615508
Conditions
Horner Syndrome
Interventions
10% phenylephrine
Drug
Lead sponsor
Denver Health and Hospital Authority
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
2
States / cities
Denver, Colorado
Conditions
Mydriasis
Interventions
MDD-administered EYN-1601, Phenylephrine 2.5% Eyedrop, Phenylephrine 10% Eyedrop
Combination Product · Drug
Lead sponsor
Eyenovia Inc.
Industry
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Artesia, California
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Characterization of Sympathetic Nerve Activity in Stress Cardiomyopathy

NCT01048125
Conditions
Cardiomyopathy
Interventions
Sympathetic Nerve Activity, Mental Stress Test (Color Word Test), The Modified Oxford Technique for Baroreflex Sensitivity, Cold Pressor Test, Echocardiographic evaluation
Device · Behavioral · Drug + 1 more
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
21 Years to 90 Years
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Columbia, Missouri
Conditions
Intestinal Disorder, Bowel Diseases, Inflammatory
Interventions
TD-1473 [Tablet A], TD-1473 [Tablet B]
Drug
Lead sponsor
Theravance Biopharma
Industry
Eligibility
19 Years to 55 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
2
States / cities
Cypress, California • Lincoln, Nebraska
Conditions
Dysphagia, Aspiration
Interventions
3-Screenings Protocol, FEES, Tracheal Ultrasound
Diagnostic Test
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
855 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
5
States / cities
Stanford, California • Aurora, Colorado • New Haven, Connecticut + 1 more