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Showing 1–24 of 100 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Sympathetic Nervous System Clear all
Completed Phase 1Phase 2 Interventional Results available

Safety Study of Suprachoroidal Triamcinolone Acetonide Via Microneedle to Treat Uveitis

NCT01789320
View directory record Official record
Conditions
Uveitis, Intermediate Uveitis, Posterior Uveitis, Panuveitis, Noninfectious Uveitis
Interventions
triamcinolone acetonide (Triesence®)
Drug
Lead sponsor
Clearside Biomedical, Inc.
Industry
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
3
States / cities
Chicago, Illinois • Omaha, Nebraska • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 20, 2021 · Synced Sep 10, 2026, 10:05 AM EDT
Terminated Phase 2 Interventional Results available

Neurotropin to Treat Chronic Neuropathic Pain

NCT00006289
View directory record Official record
Conditions
Complex Regional Pain Syndrome Type I, Complex Regional Pain Syndrome Type II
Interventions
Placebo, Neurotropin
Drug
Lead sponsor
National Institute of Nursing Research (NINR)
NIH
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2012
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 21, 2017 · Synced Sep 10, 2026, 10:05 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Fat Tissue Microperfusion to Measure Leptin Secretion and Its Relations With Fat Breakdown in Humans

NCT00001722
View directory record Official record
Conditions
Healthy, Obesity
Interventions
Not listed
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
Not listed
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1998 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 10, 2026, 10:05 AM EDT
Completed Phase 1 Interventional

Effect of Stellate Ganglion Block on ME/CFS

NCT05664711
View directory record Official record
Conditions
Encephalomyelitis, Myalgic, Chronic Fatigue Syndrome, Chronic Fatigue Disorder, Chronic Fatigue and Immune Dysfunction Syndrome, Myalgic Encephalomyelitis, Postviral Fatigue Syndrome, Systemic Exertion Intolerance Disease, Infectious Mononucleosis-Like Syndrome, Chronic, Chronic Fatigue-Fibromyalgia Syndrome
Interventions
Bupivacaine Injection
Drug
Lead sponsor
Neuroversion, Inc.
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Anchorage, Alaska
Source: ClinicalTrials.gov public record
Updated Dec 5, 2024 · Synced Sep 10, 2026, 10:05 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Pathophysiology of Orthostatic Intolerance

NCT00608725
View directory record Official record
Conditions
Tachycardia, Postural Orthostatic Tachycardia Syndrome
Interventions
DAXOR, QSweat, Intrinsic Heart Rate
Radiation · Procedure · Drug
Lead sponsor
Satish R. Raj
Other
Eligibility
18 Years to 80 Years
Enrollment
260 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1996 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 7, 2025 · Synced Sep 10, 2026, 10:05 AM EDT
Not listed Phase 3 Interventional

CREATE-1: A Study to Assess the Efficacy and Safety of AXS-02 in Patients With CRPS-1

NCT02504008
View directory record Official record
Conditions
Complex Regional Pain Syndrome, Reflex Sympathetic Dystrophy
Interventions
AXS-02 (oral zoledronate), Placebo
Drug
Lead sponsor
Axsome Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
190 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
29
States / cities
Tucson, Arizona • Hot Springs, Arkansas • Encinitas, California + 26 more
Source: ClinicalTrials.gov public record
Updated Mar 22, 2018 · Synced Sep 10, 2026, 10:05 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Intravenous Norepinephrine for Orthostatic Hypotension

NCT01285908
View directory record Official record
Conditions
Orthostatic Hypertension
Interventions
Intravenous Norepinephrine Infusion
Drug
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 9, 2014 · Synced Sep 10, 2026, 10:05 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Inflammation Inhibition in Prediabetic Humans

NCT01977417
View directory record Official record
Conditions
Prediabetes, Obese
Interventions
Salsalate, Placebo
Drug
Lead sponsor
Gary L. Pierce
Other
Eligibility
18 Years to 79 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2021
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Sep 10, 2023 · Synced Sep 10, 2026, 10:05 AM EDT
Completed Phase 4 Interventional Results available

Statin Therapy in Heart Failure: Potential Mechanisms of Benefit

NCT00233480
View directory record Official record
Conditions
Heart Failure, Congestive
Interventions
atorvastatin, placebo
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 19, 2020 · Synced Sep 10, 2026, 10:05 AM EDT
Recruiting Early Phase 1 Interventional

SGLT2i, Hepatic Glucose Production, and SNS

NCT07053293
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Empagliflozin 25 MG
Drug
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
30 Years to 75 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Sep 10, 2026, 10:05 AM EDT
Completed Phase 2Phase 3 Interventional

Efficacy and Safety of Intravenous Neridronic Acid in CRPS-I

NCT02402530
View directory record Official record
Conditions
Complex Regional Pain Syndrome, Type I
Interventions
Placebo, Neridronic acid 62.5 mg
Drug
Lead sponsor
Grünenthal GmbH
Industry
Eligibility
18 Years to 80 Years
Enrollment
459 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
49
States / cities
Foley, Alabama • Scottsdale, Arizona • Tucson, Arizona + 42 more
Source: ClinicalTrials.gov public record
Updated May 8, 2018 · Synced Sep 10, 2026, 10:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Role of the Sympathetic Nervous System in Rosacea

NCT03989492
View directory record Official record
Conditions
Rosacea
Interventions
systemic and local stressors
Other
Lead sponsor
Kristen Metzler-Wilson
Other
Eligibility
18 Years to 45 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
2
States / cities
Indianapolis, Indiana • Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Sep 22, 2025 · Synced Sep 10, 2026, 10:05 AM EDT
Completed No phase listed Observational

Plasma Exchange for Autoimmune Autonomic Failure

NCT00359346
View directory record Official record
Conditions
Plasma Exchange, Autonomic Failure
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years to 99 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 10, 2026, 10:05 AM EDT
Completed Not applicable Interventional

Autonomic Recalibration

NCT06603168
View directory record Official record
Conditions
Chronic Pain (Back / Neck), Autonomic Dysregulation
Interventions
Autonomic Recalibration Treatment
Other
Lead sponsor
Edward Via Virginia College of Osteopathic Medicine
Other
Eligibility
21 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Auburn, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 10, 2026, 10:05 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Autonomic Nervous System and Obesity

NCT00179023
View directory record Official record
Conditions
OBESITY, HYPERTENSION, PURE AUTONOMIC FAILURE, SHY-DRAGER SYNDROME
Interventions
Trimethaphan, Pseudoephedrine
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 80 Years
Enrollment
128 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 28, 2018 · Synced Sep 10, 2026, 10:05 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Early Neurovascular Adaptations in Aging Women

NCT06520982
View directory record Official record
Conditions
Women, Sympathetic Nervous System, Aging, Blood Flow
Interventions
Norepinephrine, Isoproterenol, Acetylcholine, Nitroprusside, Estrogen
Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Nov 25, 2025 · Synced Sep 10, 2026, 10:05 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cardiovascular, Cerebrovascular, and Cognitive Function in Spinal Cord Injury

NCT02122991
View directory record Official record
Conditions
Spinal Cord Injury
Interventions
Not listed
Lead sponsor
James J. Peters Veterans Affairs Medical Center
Federal
Eligibility
30 Years to 64 Years
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Feb 18, 2018 · Synced Sep 10, 2026, 10:05 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Sympathetic and Parasympathetic Responses to Specific Chiropractic Adjustments

NCT00632164
View directory record Official record
Conditions
Autonomic Nervous System
Interventions
Not listed
Lead sponsor
Sherman College of Straight Chiropractic
Other
Eligibility
25 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Spartanburg, South Carolina
Source: ClinicalTrials.gov public record
Updated Mar 9, 2008 · Synced Sep 10, 2026, 10:05 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Study to Analyze the Role of Sympathetic Nervous System in Spontaneous Coronary Artery Dissection

NCT05699200
View directory record Official record
Conditions
Spontaneous Coronary Artery Dissection, Healthy
Interventions
Arterial Tonometry, Echocardiogram, Carotid Ultrasounds, Elastography, Ankle-Brachial Index, Microneurography with sympathoexcitatory maneuvers
Other · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Sep 10, 2026, 10:05 AM EDT
Terminated Phase 3 Interventional Results available

Efficacy and Safety of Intravenous Neridronic Acid in Complex Regional Pain Syndrome (CRPS)

NCT03560986
View directory record Official record
Conditions
Complex Regional Pain Syndrome (CRPS)
Interventions
Neridronic acid 100 mg, Placebo
Drug
Lead sponsor
Grünenthal GmbH
Industry
Eligibility
18 Years and older
Enrollment
267 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
41
States / cities
Cottonwood, Arizona • Tempe, Arizona • Tucson, Arizona + 34 more
Source: ClinicalTrials.gov public record
Updated Aug 4, 2020 · Synced Sep 10, 2026, 10:05 AM EDT
Completed Phase 4 Interventional Results available

Bromocriptine-QR Therapy on Sympathetic Tone and Vascular Biology in Type 2 Diabetes Subjects

NCT02682901
View directory record Official record
Conditions
Diabetic Autonomic Neuropathy
Interventions
Cycloset, Placebo
Drug
Lead sponsor
Eastern Virginia Medical School
Other
Eligibility
30 Years to 80 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Dec 9, 2021 · Synced Sep 10, 2026, 10:05 AM EDT
Completed Early Phase 1 Interventional

Effects of Antihypertensive Drug Treatment on Brain Blood Flow, Cognition, and Regulation of Nervous System in Older Adults With Hypertension.

NCT06287580
View directory record Official record
Conditions
Essential Hypertension, Older Adults
Interventions
chlorthalidone, Placebo
Drug · Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
60 Years to 85 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Sep 10, 2026, 10:05 AM EDT
Suspended Early Phase 1 Interventional Accepts healthy volunteers

Impact of Intranasal Insulin on Sympathetic Activity and Cerebral Vasodilation

NCT05153395
View directory record Official record
Conditions
Healthy, Vasodilation, Insulin Resistance, Autonomic Dysfunction, Obesity
Interventions
Carbon dioxide breathing, Neurovascular Coupling, Human insulin
Other · Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 45 Years
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 18, 2025 · Synced Sep 10, 2026, 10:05 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Vascular Dysfunction in Human Obesity Hypertension

NCT01983462
View directory record Official record
Conditions
Obesity, Prehypertension, Hypertension
Interventions
Clonidine, Hydrochlorothiazide, Placebo
Drug
Lead sponsor
Gary L. Pierce
Other
Eligibility
18 Years to 79 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2020
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Apr 13, 2023 · Synced Sep 10, 2026, 10:05 AM EDT