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ClinicalTrials.gov public records Last synced Oct 20, 2026, 4:51 PM EDT

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Showing 1–24 of 140 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: phenylephrine HCl Clear all
Completed Early Phase 1 Interventional Accepts healthy volunteers

Phenylephrine and Pulse Pressure Variability

NCT05011357
View directory record Official record
Conditions
Intraoperative Hypotension
Interventions
Phenylephrine, Saline Control
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 45 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 22, 2024 · Synced Oct 20, 2026, 4:51 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Autoimmune Basis for Postural Tachycardia Syndrome

NCT02725060
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome, Postural Tachycardia Syndrome, Tachycardia, Arrhythmias, Cardiac, Autonomic Nervous System Diseases, Orthostatic Intolerance, Cardiovascular Diseases, Primary Dysautonomias
Interventions
phenylephrine, isoproterenol, 25 micro-Ci of radiation, Posture study with blood samples, 24-hour heart rhythm and blood pressure monitoring, Quantitative Axonal Sudomotor Reflex Testing, Autonomic function tests, Rebreathing test, Assessment of splanchnic capacitance, microneurography
Drug · Radiation · Procedure + 1 more
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 50 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2026
U.S. locations
2
States / cities
Oklahoma City, Oklahoma • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 12, 2025 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Phase 4 Interventional Results available

Efficacy of the MydCombi on Pupillary Dilation in Pediatric and Adult Patients

NCT06366217
View directory record Official record
Conditions
Dilation, Pupil Reaction Absent
Interventions
MydCombi Device, MydCombi Drug
Device · Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
2 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 22, 2026 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy of Oxymetazoline HCl Cream 1.0% in Patients With Persistent Erythema Associated With Rosacea

NCT02132117
View directory record Official record
Conditions
Erythema, Rosacea
Interventions
Oxymetazoline HCL Cream 1.0%, Vehicle to Oxymetazoline HCL Cream
Drug
Lead sponsor
Allergan
Industry
Eligibility
18 Years and older
Enrollment
445 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Nov 18, 2019 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Phase 2 Interventional

A Single-Center, Randomized, Double-Masked, Placebo and Active Controlled, Dose-Ranging Evaluation of the Duration of Action of Brimonidine Tartrate Ophthalmic Solution in the Control of Ocular Redness Induced by Conjunctival Allergen Challenge (CAC)

NCT01275105
View directory record Official record
Conditions
Allergic Conjunctivitis
Interventions
Vehicle, Brimonidine Tartrate 0.01%, Brimonidine Tartrate 0.025%, Oxymetazoline HCl 0.025%
Drug
Lead sponsor
Eye Therapies, LLC
Industry
Eligibility
18 Years and older
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
Andover, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 6, 2012 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Deciphering Preserved Autonomic Function After Spinal Cord Injury

NCT04493372
View directory record Official record
Conditions
Spinal Cord Injuries, Autonomic Imbalance, Autonomic Dysreflexia, Orthostatic Hypotension
Interventions
Tests of sympathetic inhibition, Tests of sympathetic activation, Testing of autonomic dysreflexia
Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 50 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of Topical Phenylephrine 2.5% on EVP in Normal Human Eyes

NCT02965924
View directory record Official record
Conditions
Assess Phenylephrine on EVP and IOP
Interventions
Phenylephrine 2.5%
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 23, 2019 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Effectiveness of Kovacaine Nasal Spray for Dental Anesthesia

NCT01302483
View directory record Official record
Conditions
Dental Anesthesia Efficacy
Interventions
3% tetracaine HCL with 0.05% oxymetazoline HCL, Lidocaine Injection
Drug
Lead sponsor
St. Renatus, LLC
Industry
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jun 17, 2015 · Synced Oct 20, 2026, 4:51 PM EDT
Not listed Phase 2 Interventional

Methylene Blue as a Third-line Vasopressor in Septic Shock

NCT04089072
View directory record Official record
Conditions
Septic Shock
Interventions
Methylene Blue, Phenylephrine
Drug
Lead sponsor
Carilion Clinic
Other
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Roanoke, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 26, 2022 · Synced Oct 20, 2026, 4:51 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Acute and Chronic Repercussion of Spinal Cord Stimulation After Spinal Cord Injury

NCT07210411
View directory record Official record
Conditions
Spinal Cord Injuries
Interventions
Tests of sympathetic inhibition, Tests of above level sympathetic activation, Testing of below level sympathetic activation, Epidural stimulation, Transcutaneous stimulation
Diagnostic Test · Device
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 50 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2031
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Oct 20, 2026, 4:51 PM EDT
Terminated Phase 1 Interventional

Cardiovascular Effects of Angiotensin (1-7) in Essential Hypertension

NCT02245230
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jan 9, 2024 · Synced Oct 20, 2026, 4:51 PM EDT
Terminated Phase 1 Interventional

Safety of Phenylephrine for Oral Mucositis Prevention

NCT01092975
View directory record Official record
Conditions
Mucositis, Stomatitis
Interventions
phenylephrine solution
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 80 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 28, 2020 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Study of the Safety, Efficacy and PK of EYN-1601 in Dilation of the Pupil

NCT02946125
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jul 27, 2022 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Not applicable Interventional Results available

Prevention of Intraoperative Nausea and Vomiting During Cesarean Section

NCT01216410
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Aug 6, 2014 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Phase 3 Interventional Results available

A Study to Assess Safety and Efficacy in Participants Age 40 to 55 With Presbyopia (Old Eye) Who Receive AGN-190584 in Both Eyes Twice Daily

NCT04983589
View directory record Official record
Conditions
Presbyopia
Interventions
Pilocarpine HCl, Vehicle
Drug
Lead sponsor
Allergan
Industry
Eligibility
40 Years to 55 Years
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
23
States / cities
Bakersfield, California • Glendale, California • Inglewood, California + 19 more
Source: ClinicalTrials.gov public record
Updated Mar 21, 2023 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effect of Brimonidine on Intraocular Pressure When Dilating Routine Patients

NCT03139708
View directory record Official record
Conditions
Intraocular Pressure
Interventions
Alphagan, Phenylephrine, Tropicamide
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 50 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 9, 2018 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Phase 1 Interventional

Treatment of Orthostatic Hypotension in Autonomic Failure

NCT00223691
View directory record Official record
Conditions
Autonomic Failure, Orthostatic Hypotension
Interventions
Atomoxetine, Acarbose, Pyridostigmine Bromide, Yohimbine, Midodrine HCl, placebo, Modafinil, Octreotide, water intake, Diphenhydramine Hydrochloride, Ranitidine HCL, Tranylcypromine, Ergotamine/ Caffeine, Celecoxib, Pseudoephedrine, Methylphenidate, Indomethacin, Ibuprofen, Oxymetazoline 0.05% nasal solution, Bovril, Acetazolamide, Rivastigmine tartrate, Carbidopa/levodopa, Inflatable abdominal binder, inflatable abdominal binder (sham)
Drug · Other · Dietary Supplement + 1 more
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 85 Years
Enrollment
389 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 18, 2017 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

To Investigate the Gastrointestinal Behaviour of Two Triple Combination Products in Healthy Male Volunteers

NCT03415243
View directory record Official record
Conditions
Common Cold
Interventions
Acetaminophen 650mg+Dextromethorphan 20mg+Phenylephrine 10mg, Acetaminophen 325mg+Dextromethorphan 10mg+Phenylephrine 5mg
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
21 Years to 45 Years · Male only
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jun 24, 2019 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Comparison of Inhalation vs. Intravenous Induction

NCT02331108
View directory record Official record
Conditions
Hypothermia
Interventions
Selection of anesthetic induction technique
Drug
Lead sponsor
Albert Einstein Healthcare Network
Other
Eligibility
18 Years and older
Enrollment
331 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 17, 2017 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Nyxol (0.75% Phentolamine Ophthalmic Solution) to Reverse Pharmacologically-Induced Mydriasis in Pediatric Subjects

NCT05223478
View directory record Official record
Conditions
Mydriasis, Dilation
Interventions
Phentolamine Ophthalmic Solution 0.75%, Phentolamine Ophthalmic Solution Vehicle
Drug
Lead sponsor
Opus Genetics, Inc
Industry
Eligibility
3 Years to 11 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
2
States / cities
Longwood, Florida • Athens, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 5, 2023 · Synced Oct 20, 2026, 4:51 PM EDT
Not listed Phase 2 Interventional

A Study of Efficacy and Safety of Eltoprazine HCl for Treating Levodopa-induced Dyskinesia in Parkinson's Disease Patients

NCT02439125
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Apr 22, 2016 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Phase 3 Interventional Results available

A Long-Term Safety and Efficacy Study AGN-19920 in Patients With Persistent Erythema Associated With Rosacea

NCT02095158
View directory record Official record
Conditions
Erythema, Rosacea
Interventions
Oxymetazoline HCL Cream 1.0%
Drug
Lead sponsor
Allergan
Industry
Eligibility
18 Years and older
Enrollment
440 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 18, 2019 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Phase 1 Interventional

The Pathophysiology of Orthostatic Hypotension

NCT00748059
View directory record Official record
Conditions
Autonomic Nervous System Diseases, Orthostatic Hypotension, Dopamine Beta-Hydroxylase Deficiency, Orthostatic Intolerance
Interventions
Standing or upright tilt, Microneurography, QSweat, neck cuff stimulation, phenylephrine,isoproterenol,nitroprusside,propranolol,edrophonium,atropine,tyramine, clonidine,yohimbine,metoclopramide,alpha-methyldopa, BodPod, Eye exam, Sleep study, Pain response testing, Metabolic chamber, Brain function studies, Bicycle Exercise Test
Procedure · Device · Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
12 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 12, 2021 · Synced Oct 20, 2026, 4:51 PM EDT
Completed Phase 4 Interventional Results available

Management of Acute Pulmonary Hypertensive Crisis in Children With Known Pulmonary Arterial Hypertension

NCT05439460
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Phenylephrine, Epinephrine, Arginine Vasopressin
Drug
Lead sponsor
Stanford University
Other
Eligibility
1 Year to 18 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Aug 5, 2022 · Synced Oct 20, 2026, 4:51 PM EDT