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Showing 1–17 of 17 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Crystal light Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Branched Chain Amino Acid Plus Glucose Supplement Reduces Exercise-Induced Delayed Onset Muscle Soreness in College Females

NCT01781910
View directory record Official record
Conditions
Exercise-induced Delayed Onset Muscle Soreness
Interventions
Branched Chain Amino Acid drink supplement, Placebo
Dietary Supplement
Lead sponsor
University of Vermont
Other
Eligibility
18 Years to 25 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2011
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Jan 31, 2013 · Synced Sep 2, 2026, 9:19 PM EDT
Completed Phase 2 Interventional Results available

COMbination of Bipolar Androgen Therapy and Nivolumab

NCT03554317
View directory record Official record
Conditions
Castration-resistant Prostate Cancer, Metastatic Prostate Cancer, Prostate Cancer
Interventions
Testosterone cypionate, Nivolumab
Drug
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
18 Years and older · Male only
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
3
States / cities
San Francisco, California • Baltimore, Maryland • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 19, 2024 · Synced Sep 2, 2026, 9:19 PM EDT
Not listed Not applicable Interventional

Floatation-REST in Methamphetamine Use Disorder: A Pilot Study

NCT05799209
View directory record Official record
Conditions
Amphetamine-Type Substance Use Disorder
Interventions
Float Pool, Float Chair
Device
Lead sponsor
Laureate Institute for Brain Research, Inc.
Other
Eligibility
18 Years to 55 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Tulsa, Oklahoma
Source: ClinicalTrials.gov public record
Updated Oct 5, 2023 · Synced Sep 2, 2026, 9:19 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

A Three-part Study to Determine the Safety, Tolerability and Pharmacokinetics of GSK1322322 in Healthy Volunteers and Healthy Male Japanese Subjects

NCT01818011
View directory record Official record
Conditions
Infections, Bacterial
Interventions
GSK1322322 Initial fit for purpose tablets, GSK1322322 over granulated tablets, GSK1322322 intended commercial tablets, Placebo tablets, 13C-GSK1322322 stable isotope powder, GSK1322322 for injection, Placebo injection
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Jan 14, 2019 · Synced Sep 2, 2026, 9:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Consumption of 4D Dietary Supplement on Perceptual-Cognitive and Visual-Motor Performance

NCT04988919
View directory record Official record
Conditions
Dietary Supplementation
Interventions
4D, placebo
Dietary Supplement
Lead sponsor
University of Central Florida
Other
Eligibility
18 Years to 40 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Oct 7, 2021 · Synced Sep 2, 2026, 9:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Supplements on Stress Markers

NCT05592561
View directory record Official record
Conditions
Physiological Stress
Interventions
mental stress task
Other
Lead sponsor
Texas State University
Other
Eligibility
18 Years to 40 Years
Enrollment
109 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
San Marcos, Texas
Source: ClinicalTrials.gov public record
Updated Apr 11, 2023 · Synced Sep 2, 2026, 9:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Pre-workout Supplement Versus Caffeine on Energy Expenditure.

NCT04539054
View directory record Official record
Conditions
Healthy
Interventions
ENGN Shred, Nutricost caffeine powder, Crystal Light
Dietary Supplement
Lead sponsor
Northern Illinois University
Other
Eligibility
19 Years to 29 Years · Male only
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
DeKalb, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 3, 2020 · Synced Sep 2, 2026, 9:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Safety and Tolerability of a Novel Amino-acid Based Hydration Drink in Healthy Volunteers

NCT05592951
View directory record Official record
Conditions
Safety, Tolerance
Interventions
Crystal Light (once serving), Liquid IV with amino acids (one serving), Liquid IV with amino acids (two servings), Liquid IV with amino acids (three servings)
Dietary Supplement
Lead sponsor
University of Memphis
Other
Eligibility
18 Years to 50 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 25, 2023 · Synced Sep 2, 2026, 9:19 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Observational Study of Lyzme5 Impact on Cholesterol and Body Weight in Man

NCT01634646
View directory record Official record
Conditions
Overweight, Elevated Cholesterol
Interventions
Lyzme5
Dietary Supplement
Lead sponsor
Jeff Golini
Industry
Eligibility
21 Years and older
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Billings, Montana
Source: ClinicalTrials.gov public record
Updated Jul 15, 2013 · Synced Sep 2, 2026, 9:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Litebook EDGE™ Phototherapy on Academic Performance and Brain Activity

NCT05383690
View directory record Official record
Conditions
Sleepiness, Daytime
Interventions
LED bright light treatment device
Device
Lead sponsor
Mclean Hospital
Other
Eligibility
13 Years to 18 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 19, 2022 · Synced Sep 2, 2026, 9:19 PM EDT
Withdrawn Not applicable Interventional

A Cataract Surgery Clinical Trial

NCT07044674
View directory record Official record
Conditions
Cataract
Interventions
UNITY Vitreoretinal Cataract System, CENTURION Vision System with Active Sentry, Anterior segment ophthalmic surgery
Device · Procedure
Lead sponsor
Alcon Research
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
5
States / cities
West Des Moines, Iowa • Sioux Falls, South Dakota • Spring, Texas + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 11, 2025 · Synced Sep 2, 2026, 9:19 PM EDT
Active, not recruiting Not applicable Interventional

Potassium Citrate and Crystal Light Lemonade

NCT05389995
View directory record Official record
Conditions
Kidney Stone
Interventions
Potassium citrate, Crystal light, Potassium citrate + crystal light
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 80 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 20, 2026 · Synced Sep 2, 2026, 9:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

To Investigate the Effect of Arabinogalactan on the Gut Microbiome in Adults

NCT04351841
View directory record Official record
Conditions
Gut Microbiota
Interventions
arabinogalactan, maltodextrin
Other
Lead sponsor
Biofortis, Merieux NutriSciences
Industry
Eligibility
18 Years to 60 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 21, 2020 · Synced Sep 2, 2026, 9:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Effects of Leucine on Body Weight

NCT00683826
View directory record Official record
Conditions
Overweight, Obesity
Interventions
L-Leucine 8gr, Liquid meal, L-Leucine 4g
Dietary Supplement · Other
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 4, 2013 · Synced Sep 2, 2026, 9:19 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Accuracy for Predicting Deep Submucosal Invasion

NCT03748667
View directory record Official record
Conditions
Colorectal Cancer, Colorectal Polyp
Interventions
White light endoscopy (WLE), NBI/BLI +/- chromoendoscopy (NBIBLI +/- CE)
Diagnostic Test
Lead sponsor
Althaia Xarxa Assistencial Universitària de Manresa
Other
Eligibility
18 Years and older
Enrollment
426 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
2
States / cities
San Francisco, California • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 20, 2023 · Synced Sep 2, 2026, 9:19 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Dynamic Light Scattering to Study Crystalline Proteins in Young Normal Lenses

NCT00304967
View directory record Official record
Conditions
Healthy
Interventions
Not listed
Lead sponsor
National Eye Institute (NEI)
NIH
Eligibility
5 Years to 21 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 2, 2026, 9:19 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers

Cerebrovascular Reactivity Assessed With fNIRS as a Biomarker of TCVI After Acute Traumatic Brain Injury in Military

NCT04058132
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
Sildenafil Citrate 50Mg Tab, functional Near-infrared Spectroscopy (fNIRS), Carbon Dioxide (CO2) 5%, Neuropsychological Assessments, Gadolinium contrast infusion, Blood sample collection for research purposes, Structural brain Magnetic Resonance Imaging (MRI
Drug · Device · Other + 1 more
Lead sponsor
Uniformed Services University of the Health Sciences
Federal
Eligibility
18 Years to 55 Years
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 27, 2024 · Synced Sep 2, 2026, 9:19 PM EDT