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ClinicalTrials.gov public records Last synced Oct 3, 2026, 10:16 PM EDT

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Showing 49–66 of 66 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Beetroot juice placebo Clear all
Completed Not applicable Interventional Results available

Dietary Nitrate Supplementation and Thermoregulation

NCT03506646
View directory record Official record
Conditions
Peripheral Arterial Disease, Peripheral Artery Disease
Interventions
Placebo, Beet root juice
Dietary Supplement
Lead sponsor
University of Nebraska
Other
Eligibility
50 Years to 85 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Nov 22, 2024 · Synced Oct 3, 2026, 10:16 PM EDT
Completed Not applicable Interventional

Strength Testing After Nitrate Delivery (STAND) in ICU Patients

NCT02293616
View directory record Official record
Conditions
Respiratory Failure
Interventions
Nitrate Rich Beetroot Juice, Placebo
Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
56 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 18, 2018 · Synced Oct 3, 2026, 10:16 PM EDT
Completed Not applicable Interventional

Cardiovascular Function in Cancer Survivors

NCT03776149
View directory record Official record
Conditions
Cancer Survivor With History of Anthracycline Chemotherapy
Interventions
Beetroot juice, Black currant juice
Dietary Supplement
Lead sponsor
Kansas State University
Other
Eligibility
21 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Manhattan, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 31, 2022 · Synced Oct 3, 2026, 10:16 PM EDT
Not listed Phase 1 Interventional

The Effects of Oral Inorganic Nitrate Supplementation on Lower Limb Perfusion During Exercise in Patients With PAD

NCT05036213
View directory record Official record
Conditions
Peripheral Arterial Disease, Peripheral Vascular Diseases
Interventions
BEET IT - Concentrate Beet root juice, BEET IT - Concentrate Beet root juice (nitrate depleted)
Drug
Lead sponsor
University of Virginia
Other
Eligibility
40 Years to 80 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Nov 29, 2023 · Synced Oct 3, 2026, 10:16 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Inorganic Nitrate Supplementation on Cerebrovascular Aging and Arterial Stiffness Study

NCT03617302
View directory record Official record
Conditions
Aging, Arterial Stiffness, Endothelial Dysfunction, Hypertension, Cognitive Decline
Interventions
Experimental: Nitrate-containing, Placebo: Nitrate-depleted
Drug
Lead sponsor
Gary L. Pierce, PhD
Other
Eligibility
50 Years to 79 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Mar 4, 2026 · Synced Oct 3, 2026, 10:16 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Exercise Fatiguability in Older Adults: The Protective Effects of Dietary Nitrate Supplementation

NCT05313490
View directory record Official record
Conditions
Aging
Interventions
Beetroot Juice, Placebo Beetroot Juice
Dietary Supplement · Other
Lead sponsor
Marquette University
Other
Eligibility
60 Years to 90 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 24, 2022 · Synced Oct 3, 2026, 10:16 PM EDT
Completed Phase 2 Interventional Results available

Dietary Nitrate and Exercise to Augment Exercise Training Benefits in Subjects With DM+PAD

NCT01785524
View directory record Official record
Conditions
Peripheral Arterial Disease, Type II Diabetes Mellitus
Interventions
Beetroot Juice (Beet-It Stamina Shot) and Exercise Training, Placebo Comparator Beverage (Beet-It Stamina Shot) & Exercise Training
Drug · Other
Lead sponsor
Duke University
Other
Eligibility
50 Years to 80 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 27, 2017 · Synced Oct 3, 2026, 10:16 PM EDT
Completed Phase 2 Interventional Results available

Nitrite Supplementation in Long COVID Patients

NCT05618574
View directory record Official record
Conditions
Long COVID, Cardiorespiratory Fitness
Interventions
140 ml per day of Beet-It nitrate beverage (James White Drinks Ltd., Ipswich, UK), 210 ml of nitrate-depleted placebo
Dietary Supplement
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 3, 2026, 10:16 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Beetroot Juice and Sleep

NCT05864521
View directory record Official record
Conditions
Healthy
Interventions
Active Beetroot Juice Supplement (aBRJ), Placebo Beetroot Juice Supplement (pBRJ)
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Oct 3, 2026, 10:16 PM EDT
Recruiting Phase 3 Interventional

SMART Exercise for PAD

NCT06032065
View directory record Official record
Conditions
Peripheral Arterial Disease, Aging, Peripheral Vascular Diseases, Walking, Difficulty
Interventions
Supervised Treadmill Exercise, Home-Based Exercise, Nitrate-rich beetroot Juice
Behavioral · Dietary Supplement
Lead sponsor
Northwestern University
Other
Eligibility
50 Years and older
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
3
States / cities
Chicago, Illinois • Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Oct 3, 2026, 10:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Efficacy Long-term Dietary Nitrate Consumption to Plasma Nitrite Conversion

NCT05380167
View directory record Official record
Conditions
Cardiovascular Diseases in Old Age
Interventions
BRJ Nitrate, BRJ Placebo
Dietary Supplement
Lead sponsor
Wake Forest University
Other
Eligibility
40 Years to 80 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated May 25, 2022 · Synced Oct 3, 2026, 10:16 PM EDT
Not yet recruiting Not applicable Interventional

Inorganic Nitrate as a Treatment for ANOCA: NO-ANOCA

NCT06948201
View directory record Official record
Conditions
Coronary Microvascular Dysfunction (CMD), Angina Patients With Non-obstructive Coronary Artery Disease
Interventions
70mL Nitrate Rich Beetroot Juice followed by placebo (Nitrate depleted beetroot juice), Placebo (70 mL Nitrate depleted beetroot juice) followed by 70mL Nitrate Rich Beetroot Juice
Dietary Supplement
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older · Female only
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 29, 2025 · Synced Oct 3, 2026, 10:16 PM EDT
Completed Not applicable Interventional

Betaine, Exercise Performance, and Gut Permeability

NCT06392360
View directory record Official record
Conditions
Metabolic Disturbance, Permeability; Increased
Interventions
Betaine, Placebo
Dietary Supplement
Lead sponsor
Appalachian State University
Other
Eligibility
18 Years to 65 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
2
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 11, 2025 · Synced Oct 3, 2026, 10:16 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 10, 2026 · Synced Oct 3, 2026, 10:16 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Acute Effects of Beet Juice Consumption on Exercise Capacity in Heart Failure

NCT01946542
View directory record Official record
Conditions
Heart Failure
Interventions
beet juice concentrate, placebo
Drug · Other
Lead sponsor
Jason Allen, Ph.D.
Other
Eligibility
55 Years to 90 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 14, 2015 · Synced Oct 3, 2026, 10:16 PM EDT
Terminated Not applicable Interventional

Effects of Dietary Nitrate in Women With Secondary Amenorrhea

NCT07019129
View directory record Official record
Conditions
Secondary Amenorrhea
Interventions
Beetroot Juice - Active, Placebo Beetroot Juice Without Nitrate
Dietary Supplement
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 44 Years · Female only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Jun 12, 2026 · Synced Oct 3, 2026, 10:16 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Acute Nitrate Supplementation on Vascular Function in Hispanic, Black and White Population

NCT05188079
View directory record Official record
Conditions
Healthy Adults
Interventions
Beetroot juice, Placebo drink
Dietary Supplement
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years to 65 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2028
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jan 16, 2025 · Synced Oct 3, 2026, 10:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Beet Supplementation, Exercise, Inflammation

NCT05907135
View directory record Official record
Conditions
Inflammatory Response, Metabolic Disturbance, Immune Suppression
Interventions
Beet, Placebo
Dietary Supplement
Lead sponsor
Appalachian State University
Other
Eligibility
18 Years to 60 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 20, 2023 · Synced Oct 3, 2026, 10:16 PM EDT