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Showing 1–24 of 646 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Disorders of the Autonomic Nervous System Clear all
Active, not recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Treatment of Orthostatic Intolerance

NCT00262470
View directory record Official record
Conditions
Tachycardia, Chronic Orthostatic Intolerance
Interventions
Acetazolamide, Atomoxetine, NO Drug, Clonidine, Entacapone, Entacapone & Propranolol, Atomoxetine & Propranolol, Indomethacin, Mecamylamine, Isosorbide Dinitrate, Melatonin, Midodrine, Modafinil, Octreotide, Placebo, Propranolol, Modafinil & Propranolol, Sertraline, IV Saline, Drinking Water, Breathing Device, memantine, Abdominal binder
Drug · Other · Dietary Supplement + 3 more
Lead sponsor
Satish R. Raj
Other
Eligibility
18 Years to 70 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1997 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 7, 2025 · Synced Sep 24, 2026, 10:05 PM EDT
Completed Phase 1 Interventional

Psilocybin for the Treatment of Cluster Headache

NCT02981173
View directory record Official record
Conditions
Cluster Headache
Interventions
0.143 mg/kg Psilocybin or 10 mg Psilocybin, 0.0143 mg/kg Psilocybin or 1 mg Psilocybin, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 65 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 14, 2023 · Synced Sep 24, 2026, 10:05 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Local Vasoconstriction in Postural Tachycardia Syndrome

NCT01210430
View directory record Official record
Conditions
Postural Tachycardia Syndrome
Interventions
Losartan, Ascorbic Acid (Vitamin C), Normal Saline
Drug
Lead sponsor
New York Medical College
Other
Eligibility
14 Years to 29 Years
Enrollment
74 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
1
States / cities
Hawthorne, New York
Source: ClinicalTrials.gov public record
Updated Jun 9, 2021 · Synced Sep 24, 2026, 10:05 PM EDT
Not listed Phase 4 Interventional

Assessment of Midodrine in the Prevention of Vasovagal Syncope: The Prevention of Syncope Trial IV

NCT01456481
View directory record Official record
Conditions
Vasovagal Syncope
Interventions
midodrine hydrochloride, matching placebo
Drug
Lead sponsor
Dr. Bob Sheldon
Other
Eligibility
18 Years and older
Enrollment
134 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2024
U.S. locations
2
States / cities
Minneapolis, Minnesota • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 8, 2024 · Synced Sep 24, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Study of Blood Pressure and Blood Supply to the Brain in Persons With a Spinal Cord Injury.

NCT00248807
View directory record Official record
Conditions
Orthostatic Hypotension, Spinal Cord Injuries
Interventions
1.25 mg enalaprilat IV, Head up tilt (HUT)
Drug · Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2012
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Feb 24, 2025 · Synced Sep 24, 2026, 10:05 PM EDT
Active, not recruiting Phase 2 Interventional

Terazosin and Parkinson's Disease Extension Study

NCT05109364
View directory record Official record
Conditions
Symptomatic Parkinson Disease, REM Sleep Behavior Disorder, Pre-motor Parkinson's Disease
Interventions
Terazosin therapy
Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
50 Years to 85 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 1, 2026 · Synced Sep 24, 2026, 10:05 PM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

Exploring Sympathetic Nervous System Function in Individuals With Down Syndrome

NCT07238465
View directory record Official record
Conditions
Down Syndrome, Autonomic Dysfunction
Interventions
Fear Response, Cold Stress, Pain Response, Caffeine, 12-Hour Fast, Maximal Dynamic Exercise
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 50 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Sep 24, 2026, 10:05 PM EDT
Terminated No phase listed Observational

Release of Acetylcholine From the Ganglionated Plexus During the Thaw Phase of Cryoballon Pulmonary Vein Ablation (GP RESPONSE Study)

NCT03636100
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Cryoballoon ablation
Device
Lead sponsor
Saint Luke's Health System
Other
Eligibility
18 Years to 80 Years
Enrollment
7 participants
Timeline
2018 – 2019
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 18, 2021 · Synced Sep 24, 2026, 10:05 PM EDT
Completed Phase 4 Interventional

Restore Claims Characterization Study

NCT00200122
View directory record Official record
Conditions
Chronic Refractory Pain Associated With Failed Back Surgery Syndrome, Epidural Fibrosis, Peripheral Causalgia, Complex Regional Pain Syndrome
Interventions
Spinal Cord Stimulation
Device
Lead sponsor
MedtronicNeuro
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
8
States / cities
Chicago, Illinois • Indianapolis, Indiana • Kansas City, Missouri + 5 more
Source: ClinicalTrials.gov public record
Updated Jan 20, 2009 · Synced Sep 24, 2026, 10:05 PM EDT
Active, not recruiting Phase 1 Interventional

A Study to Assess the Safety and Tolerability of AZD1390 Given With Radiation Therapy in Patients With Brain Cancer

NCT03423628
View directory record Official record
Conditions
Recurrent Glioblastoma Multiforme, Primary Glioblastoma Multiforme, Brain Neoplasms, Malignant, Leptomeningeal Disease (LMD)
Interventions
Radiation Therapy, AZD1390
Radiation · Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years
Enrollment
159 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
5
States / cities
Boston, Massachusetts • New York, New York • Pittsburgh, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Sep 24, 2026, 10:05 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

L-citrulline Supplementation, Cold Exposure, & Post-Exercise Muscle Ischemia

NCT02104375
View directory record Official record
Conditions
Hypertension
Interventions
L-citrulline
Dietary Supplement
Lead sponsor
Florida State University
Other
Eligibility
18 Years to 35 Years · Male only
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Mar 9, 2015 · Synced Sep 24, 2026, 10:05 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Interstitial Cystitis: Examination of the Central Autonomic Network

NCT03008382
View directory record Official record
Conditions
Interstitial Cystitis/Painful Bladder Syndrome, Myofascial Pelvic Pain
Interventions
Metoprolol Tartrate Oral Tablet, Placebo Oral Tablet, No intervention- observational sub-study
Drug · Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years to 80 Years · Female only
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
2
States / cities
Evanston, Illinois • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 16, 2025 · Synced Sep 24, 2026, 10:05 PM EDT
Completed Phase 1 Interventional

Dual Sympathetic Blocks for Patients Experiencing Sympathetically-Mediated Symptoms From Long COVID

NCT05638620
View directory record Official record
Conditions
Post Acute COVID-19 Syndrome, Long COVID, Long Covid19, COVID-19 Recurrent, Post-Acute COVID-19, Post-Acute COVID-19 Infection, SARS-CoV2 Infection, Post Acute Sequelae of COVID-19, Dysautonomia, Dysautonomia Like Disorder, Dysautonomia Orthostatic Hypotension Syndrome, Post COVID-19 Condition, Post-COVID Syndrome, Post COVID-19 Condition, Unspecified, Post-COVID-19 Syndrome
Interventions
stellate ganglion block with 0.5% bupivacaine
Drug
Lead sponsor
Jonathann Kuo, MD
Other
Eligibility
18 Years to 100 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 12, 2025 · Synced Sep 24, 2026, 10:05 PM EDT
Completed Not applicable Interventional

Autonomic Effects of Stimulation in SCI

NCT05664646
View directory record Official record
Conditions
Spinal Cord Injury
Interventions
Transcutaneous Spinal Cord Stimulation (TSCS)
Device
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Sep 24, 2026, 10:05 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cutaneous Autonomic Pilomotor Testing to Unveil the Role of Neuropathy Progression in Early Parkinson's Disease

NCT03043768
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Not listed
Lead sponsor
GWT-TUD GmbH
Other
Eligibility
35 Years to 80 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 21, 2022 · Synced Sep 24, 2026, 10:05 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Cardiovascular and Neurovascular Regulation in GWI

NCT04586049
View directory record Official record
Conditions
Brain Blood Flow, Neurovascular Control
Interventions
MRI, Transcranial Doppler Ultrasound, Sympathetic Nerve Activity
Device · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
45 Years to 68 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 7, 2026 · Synced Sep 24, 2026, 10:05 PM EDT
Not yet recruiting Not applicable Interventional

The Impact of Improved Vagal Function on Periaqueductal Gray Connectivity

NCT05618067
View directory record Official record
Conditions
Postural Tachycardia Syndrome
Interventions
breathing exercise training
Behavioral
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2028
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Sep 15, 2026 · Synced Sep 24, 2026, 10:05 PM EDT
Terminated Phase 3 Interventional Results available

Phase 3 Clinical Effect Durability of TD-9855 for Treating Symptomatic nOH in Subjects With Primary Autonomic Failure

NCT03829657
View directory record Official record
Conditions
Symptomatic Neurogenic Orthostatic Hypotension, MSA, Parkinson's Disease (PD), Pure Autonomic Failure (PAF)
Interventions
ampreloxetine, Placebo
Drug
Lead sponsor
Theravance Biopharma
Industry
Eligibility
30 Years and older
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
20
States / cities
Sun City, Arizona • La Jolla, California • Palo Alto, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jan 19, 2023 · Synced Sep 24, 2026, 10:05 PM EDT
Completed Not applicable Interventional

VNS for Long-COVID-19

NCT05630040
View directory record Official record
Conditions
Post-COVID-19 Syndrome, Postural Tachycardia Syndrome, Dysautonomia
Interventions
Non-invasive vagus nerve stimulation, Sham Intervention
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 7, 2024 · Synced Sep 24, 2026, 10:05 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Chemoreflex and Baroreflex Alterations Causing Postural Tachycardia Syndrome With Orthostatic Hyperpnea and Hypocapnia

NCT05923840
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome, Hypocapnia, Hyperventilation
Interventions
Chemoreflex Testing, Baroreflex testing, Orthostatic stress testing
Diagnostic Test
Lead sponsor
New York Medical College
Other
Eligibility
15 Years to 39 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Hawthorne, New York
Source: ClinicalTrials.gov public record
Updated Jun 27, 2023 · Synced Sep 24, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Presyncope (Syncope) Prevention Study

NCT04772755
View directory record Official record
Conditions
Syncope, Vasovagal
Interventions
Buzzy® and Electronic Game
Device
Lead sponsor
Duke University
Other
Eligibility
10 Years to 14 Years
Enrollment
338 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
2
States / cities
Atlanta, Georgia • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 15, 2023 · Synced Sep 24, 2026, 10:05 PM EDT
Completed Not applicable Interventional

Heart Rate Variability Biofeedback for Female Sexual Arousal Disorder

NCT02958176
View directory record Official record
Conditions
Female Sexual Arousal Disorder
Interventions
HRV Biofeedback, Autogenic Training
Behavioral
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Oct 10, 2018 · Synced Sep 24, 2026, 10:05 PM EDT
Not yet recruiting Early Phase 1 Interventional

Guanfacine and Cromolyn Sodium for POTS: The DBPOTS Trial

NCT07757555
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome (POTS), Dysautonomia, Orthostatic Intolerance, Autonomic Nervous System Diseases
Interventions
Guanfacine (GFC), Cromolyn Sodium, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 100 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 24, 2026, 10:05 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Longitudinal Examination of Aging With a Spinal Cord Injury: Cardiovascular, Cerebrovascular and Cognitive Consequences

NCT03023163
View directory record Official record
Conditions
Spinal Cord Injury
Interventions
Longitudinal
Other
Lead sponsor
James J. Peters Veterans Affairs Medical Center
Federal
Eligibility
28 Years to 75 Years
Enrollment
92 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
1
States / cities
West Orange, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 25, 2023 · Synced Sep 24, 2026, 10:05 PM EDT