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Showing 1–24 of 154 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 2 Interventional Results available

Endothelial Function, Lipoproteins, and Inflammation With Low HDL Cholesterol in HIV: ER Niacin Versus Fenofibrate

NCT01426438
View directory record Official record
Conditions
HIV-1 Infection
Interventions
Niacin, Aspirin, Fenofibrate
Drug
Lead sponsor
Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections
Network
Eligibility
18 Years and older
Enrollment
99 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
14
States / cities
Birmingham, Alabama • Los Angeles, California • Torrance, California + 10 more
Source: ClinicalTrials.gov public record
Updated Feb 2, 2016 · Synced Sep 5, 2026, 10:54 PM EDT
Terminated Phase 3 Interventional Results available

Niacin Plus Statin to Prevent Vascular Events

NCT00120289
View directory record Official record
Conditions
Cardiovascular Diseases, Heart Diseases, Cerebrovascular Accident, Coronary Disease, Atherosclerosis, Myocardial Infarction
Interventions
Extended release niacin, Simvastatin
Drug
Lead sponsor
Axio Research. LLC
Industry
Eligibility
45 Years and older
Enrollment
3,414 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
68
States / cities
Birmingham, Alabama • Hoover, Alabama • Pheonix, Arizona + 52 more
Source: ClinicalTrials.gov public record
Updated Apr 5, 2016 · Synced Sep 5, 2026, 10:54 PM EDT
Completed No phase listed Observational

Carotid Plaque Characteristics by MRI in AIM-HIGH (Carotid MRI Substudy)

NCT01178320
View directory record Official record
Conditions
Coronary Artery Disease, Carotid Artery Diseases, Atherosclerosis
Interventions
Simvastatin, simvastatin plus extended-release niacin
Drug
Lead sponsor
University of Washington
Other
Eligibility
45 Years and older
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2015
U.S. locations
15
States / cities
Phoenix, Arizona • Long Beach, California • Los Angeles, California + 7 more
Source: ClinicalTrials.gov public record
Updated Feb 8, 2018 · Synced Sep 5, 2026, 10:54 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Regulation of Endogenous Glucose Production by Central KATP Channels

NCT03540758
View directory record Official record
Conditions
Diabetes Mellitus, Glucose Metabolism Disorders
Interventions
Diazoxide, Nicotinic acid, Placebo
Drug
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
21 Years to 70 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2027
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Sep 5, 2026, 10:54 PM EDT
Withdrawn Phase 1 Interventional

A Clinical Trial of Patients With Melanoma

NCT02915666
View directory record Official record
Conditions
Melanoma
Interventions
Digoxin Combination, Dabrafenib, Trametinib
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated May 14, 2018 · Synced Sep 5, 2026, 10:54 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Supplements for Controlling Resistance to Insulin

NCT00699413
View directory record Official record
Conditions
Obesity, Diabetes Mellitus, Type 2
Interventions
nutrition education plus active supplement, nutrition education plus inactive supplement
Drug
Lead sponsor
University of Southern California
Other
Eligibility
13 Years to 17 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 10, 2024 · Synced Sep 5, 2026, 10:54 PM EDT
Completed Phase 2 Interventional Results available

Gulf War Illness: Evaluation of an Innovative Detoxification Program

NCT01672710
View directory record Official record
Conditions
Gulf War Illness
Interventions
plain crystalline niacin, exercise, sauna
Drug
Lead sponsor
University at Albany
Other
Eligibility
Not listed
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Annapolis, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 12, 2020 · Synced Sep 5, 2026, 10:54 PM EDT
Completed Phase 4 Interventional

SLIM: Combined Effects of Slo-Niacin and Atorvastatin on Lipoproteins and Inflammatory Markers in Hyperlipidemia

NCT00194402
View directory record Official record
Conditions
Dyslipidemia
Interventions
Slo-Niacin, atorvastatin
Drug
Lead sponsor
University of Washington
Other
Eligibility
21 Years to 75 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 20, 2008 · Synced Sep 5, 2026, 10:54 PM EDT
Completed No phase listed Observational

Vitamins, Breastmilk HIV Shedding, and Child Health

NCT00197756
View directory record Official record
Conditions
Maternal and Child Health Outcomes
Interventions
Vitamin A alone, Multivitamins excluding vitamin A, multivitamins including vitamin A, Placebo
Dietary Supplement · Other
Lead sponsor
Harvard School of Public Health (HSPH)
Other
Eligibility
18 Years and older · Female only
Enrollment
771 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 20, 2009 · Synced Sep 5, 2026, 10:54 PM EDT
Completed Phase 3 Interventional

The Dose Response of Niacin ER/Lovastatin on Peak Walking Time (PWT) in Patients With Intermittent Claudication - TROPIC

NCT00071266
View directory record Official record
Conditions
Intermittent Claudication, Peripheral Vascular Disease
Interventions
Niacin Extended Release and Lovastatin Tablets
Drug
Lead sponsor
Kos Pharmaceuticals
Industry
Eligibility
40 Years and older
Enrollment
870 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2003
U.S. locations
26
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Palo Alto, California + 22 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2006 · Synced Sep 5, 2026, 10:54 PM EDT
Completed No phase listed Observational

Plaque Inflammation and Dysfunctional HDL in AIM-HIGH

NCT00880178
View directory record Official record
Conditions
Cardiovascular Diseases, Heart Diseases, Coronary Disease, Atherosclerosis, Myocardial Infarction
Interventions
Simvastatin and Extended-Release niacin, Simvastatin
Drug
Lead sponsor
University of Washington
Other
Eligibility
45 Years and older
Enrollment
324 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
24
States / cities
Birmingham, Alabama • Phoenix, Arizona • Long Beach, California + 13 more
Source: ClinicalTrials.gov public record
Updated May 13, 2018 · Synced Sep 5, 2026, 10:54 PM EDT
Completed Phase 4 Interventional

Benefit of Elevation of HDL-C in Women

NCT01921010
View directory record Official record
Conditions
Cardiovascular Outcomes
Interventions
Niaspan, Placebo
Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years to 100 Years · Female only
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 22, 2019 · Synced Sep 5, 2026, 10:54 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Open-label Study to Assess Increasing Levels of NAD+(Nicotinamide Adenine Dinucleotide)

NCT03707652
View directory record Official record
Conditions
Increase in Blood Levels of Nicotinamide Adenine Dinucleotide (NAD+)
Interventions
Oral supplement A, Oral supplement B, Oral supplement C, Oral supplement D, Oral Supplement D in combination with oral supplement C
Dietary Supplement
Lead sponsor
Supplement Formulators, Inc.
Industry
Eligibility
30 Years to 80 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Fort Lauderdale, Florida
Source: ClinicalTrials.gov public record
Updated Oct 17, 2018 · Synced Sep 5, 2026, 10:54 PM EDT
Active, not recruiting Not applicable Interventional

Mechanisms of Prediabetic States in Sleep Apnea

NCT04234217
View directory record Official record
Conditions
Sleep Apnea, Pre-diabetes
Interventions
Continuous positive airway pressure, Niacin
Device · Other
Lead sponsor
University of Chicago
Other
Eligibility
20 Years to 65 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Sep 5, 2026, 10:54 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

ACEs, SIRT1, and Premature Vascular Aging in Humans

NCT07073352
View directory record Official record
Conditions
Adverse Childhood Experiences, Endothelial Dysfunction
Interventions
Nicotinamide Riboside, Placebo
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 30 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
2
States / cities
Iowa City, Iowa • Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 5, 2026, 10:54 PM EDT
Completed Not applicable Interventional

A Study to Evaluate the Effects of a Fiber Supplement on Gut Health

NCT07755735
View directory record Official record
Conditions
Gut Health, Bloating, Irregular Bowel Movements, Gastrointestinal Symptoms
Interventions
Active Supplement, Placebo Comparator
Dietary Supplement
Lead sponsor
Belli Welli Inc.
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Aug 9, 2026 · Synced Sep 5, 2026, 10:54 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Study to Evaluate the Efficacy and Safety of Clear Skin Formula on Mitigating Mild to Moderate Non-cystic Acne

NCT05879406
View directory record Official record
Conditions
Non-Cystic Acne
Interventions
VitaMedica® Clear Skin Formula capsules, Placebo Capsules
Dietary Supplement · Other
Lead sponsor
Ablon Skin Institute Research Center
Other
Eligibility
18 Years to 40 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Manhattan Beach, California
Source: ClinicalTrials.gov public record
Updated Apr 5, 2025 · Synced Sep 5, 2026, 10:54 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Effects of Niacin on Intramyocellular Fatty Acid Trafficking in Upper Body Obesity and Type 2 Diabetes Mellitus

NCT03867500
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Obesity
Interventions
Niacin, Saline
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 55 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 16, 2025 · Synced Sep 5, 2026, 10:54 PM EDT
Not yet recruiting Early Phase 1 Interventional

Psilocybin-Assisted Psychotherapy in Treating Irritable Bowel Syndrome (IBS)

NCT06760533
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome
Interventions
Psilocybin 25 mg, Psychotherapy Treatment Session, Niacin 100 mg
Drug · Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 75 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 4, 2026 · Synced Sep 5, 2026, 10:54 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

The Kidney's Response to Exercise in Heat, and the Impact of Vitamin B3 on This Response

NCT06983730
View directory record Official record
Conditions
Heat Strain, Healthy Volunteer Study, Kidney Dysfunction
Interventions
Vitamin B3
Dietary Supplement
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 45 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 4, 2026 · Synced Sep 5, 2026, 10:54 PM EDT
Completed Phase 2 Interventional Results available

Study of Safety and Efficacy of PF-04991532 in Subjects With Type 2 Diabetes

NCT01338870
View directory record Official record
Conditions
Diabetes Mellitus, Type 2
Interventions
Placebo, 25 mg PF-04991532, 75 mg PF-04991532, 150 mg PF-04991532, 300 mg PF-04991532, Sitagliptin 100 mg
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 70 Years
Enrollment
301 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
25
States / cities
Little Rock, Arkansas • Roseville, California • Denver, Colorado + 22 more
Source: ClinicalTrials.gov public record
Updated Apr 22, 2013 · Synced Sep 5, 2026, 10:54 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nutritional Supplements and Performance During Visual Field Testing (B3 Vitamin)

NCT03797469
View directory record Official record
Conditions
Visual Field Defect, Peripheral, Glaucoma, Open-Angle
Interventions
Vitamin B3, Pyruvate, Placebo
Dietary Supplement
Lead sponsor
Columbia University
Other
Eligibility
40 Years to 80 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 10, 2021 · Synced Sep 5, 2026, 10:54 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Assessing the Effects of a Topically Applied Cream to Clitoral Blood Flow

NCT01085981
View directory record Official record
Conditions
Female Sexual Dysfunction
Interventions
arginine 20%, nicotinamide .01%, niacin.1%, in LipodermPG 50%, Topical study cream, GRAS cream
Drug
Lead sponsor
East Suburban Ob Gyn
Other
Eligibility
25 Years to 60 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Monroeville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 11, 2010 · Synced Sep 5, 2026, 10:54 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Clinical Trial to Evaluate the Effects of a Supplement on Supporting Signs of a Healthy Metabolism

NCT07765407
View directory record Official record
Conditions
Poor Energy Levels, Poor Metabolism, Difficulty With Weight Management, Bloating
Interventions
Love Wellness Energize
Dietary Supplement
Lead sponsor
Love Wellness
Industry
Eligibility
25 Years to 45 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 5, 2026, 10:54 PM EDT