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Showing 1–24 of 442 matching trials from the live ClinicalTrials.gov search.
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Completed Not applicable Interventional

Evaluating the Feasibility, Acceptability, and Preliminary Outcomes of Heart Rate Variability Biofeedback for Individuals With Opioid Use Disorder.

NCT07361731
View directory record Official record
Conditions
Autonomic Nervous System Imbalance, Heart Rate Variability (HRV), Opioid Use Disorder, Breathing Techniques, Opioid Craving, Recovery, Emotional Regulation, Positive and Negative Affect, Stress, Biofeedback
Interventions
Heart rate variability biofeedback
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
18 Years to 65 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Jun 25, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cobalamin Absorption From Fortified Food

NCT01399164
View directory record Official record
Conditions
Vitamin B-12 Deficiency, Achlorhydria
Interventions
14C-B12 fortified bread
Other
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
60 Years and older
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Oct 21, 2013 · Synced Jun 25, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dehydration Cognition

NCT05916183
View directory record Official record
Conditions
Dehydration
Interventions
Fluid loss and consumption
Behavioral
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
18 Years to 26 Years · Male only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Jun 25, 2026, 10:05 PM EDT
Terminated Phase 3 Interventional Results available

Study of the Effect of SZC on Serum Potassium and Serum Bicarbonate in Patients With Hyperkalemia and Metabolic Acidosis Associated With Chronic Kidney Disease

NCT04727528
View directory record Official record
Conditions
Hyperkalaemia, Metabolic Acidosis, Chronic Kidney Disease
Interventions
Sodium zirconium cyclosilicate, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
29
States / cities
Florence, Alabama • Chula Vista, California • Downey, California + 25 more
Source: ClinicalTrials.gov public record
Updated Oct 5, 2023 · Synced Jun 25, 2026, 10:05 PM EDT
Recruiting Phase 2Phase 3 Interventional Accepts healthy volunteers

Effects of Ketone Supplement and Alcohol on Brain Metabolism

NCT06815237
View directory record Official record
Conditions
Ketosis, Alcohol Drinking, MRI
Interventions
Kenetik, Alcohol beverage
Dietary Supplement · Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
21 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 24, 2026 · Synced Jun 25, 2026, 10:05 PM EDT
Withdrawn Phase 1 Interventional

Thiamine Supplementation in Patients With Septic Shock

NCT03122678
View directory record Official record
Conditions
Septic Shock, Shock, Septic, Lactic Acidosis, Thiamine Deficiency
Interventions
Thiamine, Placebos
Drug
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Weston, Florida
Source: ClinicalTrials.gov public record
Updated Mar 14, 2019 · Synced Jun 25, 2026, 10:05 PM EDT
Completed Phase 3 Interventional Results available

Extension Study of Etelcalcetide in the Treatment of Secondary Hyperparathyroidism (SHPT) in Patients With Chronic Kidney Disease (CKD) on Hemodialysis

NCT01785875
View directory record Official record
Conditions
Hyperparathyroidism, Secondary
Interventions
Etelcalcetide
Drug
Lead sponsor
Amgen
Industry
Eligibility
18 Years to 100 Years
Enrollment
891 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
101
States / cities
Birmingham, Alabama • Pine Bluff, Arkansas • Azusa, California + 86 more
Source: ClinicalTrials.gov public record
Updated Apr 9, 2019 · Synced Jun 25, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Enhanced vs. Routine Clear Liquid Intake in Labor

NCT02524002
View directory record Official record
Conditions
Abnormal Labor, Failed Induction of Labor, Ketosis
Interventions
Accel Gel, Usual clear diet
Dietary Supplement
Lead sponsor
Temple University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 11, 2018 · Synced Jun 25, 2026, 10:05 PM EDT
Recruiting Phase 1Phase 2 Interventional

Open-Label Study of mRNA-3927 in Participants With Propionic Acidemia

NCT04159103
View directory record Official record
Conditions
Propionic Acidemia
Interventions
mRNA-3927
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
Not listed
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
15
States / cities
Los Angeles, California • Stanford, California • Miami, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Jan 21, 2026 · Synced Jun 25, 2026, 10:05 PM EDT
Completed Not applicable Interventional

DRIHNC - Dehydration Reduction in Head & Neck Cancer

NCT03799380
View directory record Official record
Conditions
Dehydration, Head & Neck Cancer, Esophageal Cancer
Interventions
Gatorade G2, Standard of care nutritional support
Dietary Supplement
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 2, 2021 · Synced Jun 25, 2026, 10:05 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Characterization of a Portable Solid-State Breath Acetone Testing Device for Real-Time Ketosis Status

NCT04130724
View directory record Official record
Conditions
Ketogenic Dieting, Ketosis
Interventions
Blood ketone testing, Breath ketone testing
Diagnostic Test
Lead sponsor
Readout, Inc.
Industry
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 16, 2019 · Synced Jun 25, 2026, 10:05 PM EDT
Completed Not applicable Interventional

Post-Operative Water Load Following Transsphenoidal Pituitary Surgery

NCT02727686
View directory record Official record
Conditions
Hyponatremia, Pituitary Adenoma
Interventions
Water Load (WL) Post-Operative Day 1
Other
Lead sponsor
St. Joseph's Hospital and Medical Center, Phoenix
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 24, 2019 · Synced Jun 25, 2026, 10:05 PM EDT
Completed No phase listed Observational

Citrate Effects and Bone Density in Long-Term Apheresis Donors

NCT00073060
View directory record Official record
Conditions
Healthy Apheresis Donors
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 80 Years
Enrollment
273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 3, 2023 · Synced Jun 25, 2026, 10:05 PM EDT
Completed Not applicable Interventional Results available

HIRREM for Stage 1 Primary Hypertension

NCT03479697
View directory record Official record
Conditions
Hypertension, Blood Pressure, Cardiovascular Diseases, Cardiovascular Risk Factor, Autonomic Nervous System Imbalance
Interventions
HIRREM, Continued Current Care
Device · Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 19, 2023 · Synced Jun 25, 2026, 10:05 PM EDT
Terminated Phase 4 Interventional Results available

The Impact of Neut During Potassium Chloride Replacement on Pain and Incidence of Phlebitis

NCT02082717
View directory record Official record
Conditions
Hypokalemia
Interventions
potassium chloride replacement, Experimental - 4% Sodium Bicarbonate
Drug
Lead sponsor
Baptist Health South Florida
Other
Eligibility
21 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Mar 31, 2021 · Synced Jun 25, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Exogenous Ketones on Indices of Keto-Adaptation in Obese Subjects on Weight Reducing Diets.

NCT06449287
View directory record Official record
Conditions
Ketogenic Diet, Weight Loss
Interventions
Diet, Blood Draw, Ketone/Glucose Monitoring, Body Composition, Urine Analysis, Neuropsychological Measures - ANAM
Other · Biological · Behavioral
Lead sponsor
Ohio State University
Other
Eligibility
21 Years to 65 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 18, 2024 · Synced Jun 25, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Does Preoperative Calcium and Calcitriol Decrease Rates of Post Thyroidectomy Hypocalcemia?

NCT03869398
View directory record Official record
Conditions
Hypocalcemia, Thyroid Diseases
Interventions
Tums, Calcitriol
Dietary Supplement
Lead sponsor
Lahey Clinic
Other
Eligibility
18 Years and older
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Burlington, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 8, 2019 · Synced Jun 25, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluating the Effect of a Supplement on Symptoms of Hormonal Imbalance.

NCT06535698
View directory record Official record
Conditions
Women's Health
Interventions
Perelel Health Hormonal Balance Support
Dietary Supplement
Lead sponsor
Perelel Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Aug 1, 2024 · Synced Jun 25, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Using Urine Color as a Marker of Hydration Status

NCT05174793
View directory record Official record
Conditions
Dehydration
Interventions
dehydration and rehydration
Other
Lead sponsor
San Diego State University
Other
Eligibility
18 Years to 35 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 2, 2022 · Synced Jun 25, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Family Supportive Supervisor Training and Workplace Assessment Tool

NCT05080426
View directory record Official record
Conditions
Psychosocial Deprivation, Work-Related Stress, Life-work Imbalance
Interventions
Family Supportive Supervisor Training 2.0
Behavioral
Lead sponsor
Work Life Help
Industry
Eligibility
18 Years and older
Enrollment
1,175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 7, 2024 · Synced Jun 25, 2026, 10:05 PM EDT
Terminated Phase 3 Interventional Results available

VA NEPHRON-D: Diabetes iN Nephropathy Study

NCT00555217
View directory record Official record
Conditions
Kidney Disease, Nephropathy, Type 2 Diabetes
Interventions
losartan, lisinopril
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years and older
Enrollment
1,448 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
30
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Loma Linda, California + 27 more
Source: ClinicalTrials.gov public record
Updated May 28, 2015 · Synced Jun 25, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Clinical Experiment of Helicobacter Pylori Transmission

NCT00550368
View directory record Official record
Conditions
Infection, Achlorhydria
Interventions
Biological intervention: Enteropathogenic E. coli
Biological
Lead sponsor
Stanford University
Other
Eligibility
35 Years to 59 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 5, 2016 · Synced Jun 25, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Firefighter Thermoregulatory Responses in Active Fire with Betaine Supplementation

NCT06042270
View directory record Official record
Conditions
Body Temperature Changes, Body Water Dehydration, Inflammation
Interventions
Betaine, Placebo
Dietary Supplement
Lead sponsor
Michael J. Ormsbee
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Oct 16, 2024 · Synced Jun 25, 2026, 10:05 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Alkali Therapy in Chronic Kidney Disease

NCT01452412
View directory record Official record
Conditions
Chronic Kidney Disease, Metabolic Acidosis
Interventions
Sodium bicarbonate, Placebo
Drug
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
19 Years and older
Enrollment
149 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
2
States / cities
The Bronx, New York • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 6, 2020 · Synced Jun 25, 2026, 10:05 PM EDT