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ClinicalTrials.gov public records Last synced Oct 26, 2026, 10:37 AM EDT

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Showing 1–24 of 44 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Infant Gut Microbiome Clear all
Recruiting Not applicable Interventional

Walnuts as an Infant Solid Food for Health

NCT07081698
View directory record Official record
Conditions
Gut -Microbiota, Inflammatory Markers, Infant Development
Interventions
Infant walnut intake
Other
Lead sponsor
Colorado State University
Other
Eligibility
5 Months to 5 Months
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 23, 2025 · Synced Oct 26, 2026, 10:37 AM EDT
Completed Phase 2 Interventional Results available

Antibiotic "Dysbiosis" in Preterm Infants

NCT02784821
View directory record Official record
Conditions
Enterocolitis, Necrotizing, Bacteremia, Bronchopulmonary Dysplasia, Intraventricular Hemorrhage, Periventricular Leukomalacia, Chronic Lung Disease, Ileal Perforation
Interventions
Antibiotic, Gastric fluid, Breast milk, Stool samples, Antibiotics
Drug · Other
Lead sponsor
University of Florida
Other
Eligibility
23 Weeks to 33 Weeks
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 5, 2024 · Synced Oct 26, 2026, 10:37 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Infant Restore: Efficacy of Microbiome Analysis and Education

NCT06424691
View directory record Official record
Conditions
Microbiota, Eczema, Microbiome, Gut Microbiome
Interventions
Tailored Recommendations, Consult Call, Email Series
Dietary Supplement · Behavioral
Lead sponsor
Seeding Inc
Industry
Eligibility
0 Months to 3 Months
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Fredericksburg, Texas
Source: ClinicalTrials.gov public record
Updated May 22, 2024 · Synced Oct 26, 2026, 10:37 AM EDT
Completed Not applicable Interventional

Probiotics in Infants With Cyanotic Congenital Heart Disease

NCT01018472
View directory record Official record
Conditions
Cyanotic Congenital Heart Disease
Interventions
Bifidobacterium infantis, Placebo
Dietary Supplement · Other
Lead sponsor
University of California, Davis
Other
Eligibility
Up to 4 Months
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Dec 2, 2014 · Synced Oct 26, 2026, 10:37 AM EDT
Active, not recruiting Not applicable Interventional Results available

Early Protein Supplementation in Extremely Preterm Infants Fed Human Milk

NCT04325308
View directory record Official record
Conditions
Prematurity; Extreme, Feeding Disorder Neonatal, Breast Milk Expression, Growth Failure, Microbial Colonization
Interventions
Protein-enriched human milk diet, Usual human milk diet
Procedure
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
1 Day to 4 Days
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Oct 26, 2026, 10:37 AM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Intestinal Microbiome Composition in Infants With Biliary Atresia (BA)

NCT03890536
View directory record Official record
Conditions
Biliary Atresia, Intrahepatic Cholestases, Normal Controls
Interventions
Not listed
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
1 Day to 2 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2032
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 9, 2025 · Synced Oct 26, 2026, 10:37 AM EDT
Completed Not applicable Interventional

Study of Probiotic Use After Childbirth in Relation to Emotional Well-Being

NCT04472065
View directory record Official record
Conditions
Mental Health Wellness
Interventions
Lactobacillus reuteri, Placebo
Dietary Supplement · Other
Lead sponsor
Elizabeth Austen Lawson
Other
Eligibility
18 Years and older · Female only
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 25, 2023 · Synced Oct 26, 2026, 10:37 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Developmental Impacts of Microplastics Exposure in Early Life

NCT06107933
View directory record Official record
Conditions
Infant Development, Breast Feeding, Environmental Exposure
Interventions
Observational only
Other
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Oct 26, 2026, 10:37 AM EDT
Recruiting No phase listed Observational

Celiac Disease Genomic Environmental Microbiome and Metabolomic Study

NCT02061306
View directory record Official record
Conditions
Celiac Disease
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
Up to 6 Months
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 17, 2026 · Synced Oct 26, 2026, 10:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The EFFECT Study: Probiotic and HMO Supplementation in Infants

NCT03994315
View directory record Official record
Conditions
Infant Gut Microbiome
Interventions
B. infantis EVC001, Lacto-N-tetraose (LNT)
Other
Lead sponsor
Evolve BioSystems, Inc.
Industry
Eligibility
Up to 60 Days
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jul 9, 2020 · Synced Oct 26, 2026, 10:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Complementary Feeding on Infant Growth and Gut Health

NCT05012930
View directory record Official record
Conditions
Gut Microbiome, Linear Growth
Interventions
Baby Foods - Meat, Baby Foods - Dairy, Baby Foods - Plant, Foods from the home
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
4 Months to 60 Months
Enrollment
267 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 26, 2026, 10:37 AM EDT
Completed Phase 4 Interventional Results available

Vitamin D and Prebiotics for Intestinal Health in Cystic Fibrosis

NCT04118010
View directory record Official record
Conditions
Cystic Fibrosis, Dysbiosis
Interventions
Vitamin D3, Placebo vitamin D3, Inulin, Placebo Inulin
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 7, 2024 · Synced Oct 26, 2026, 10:37 AM EDT
Active, not recruiting No phase listed Observational

A Cohort Study of the Intestinal Microbiota of Premature Infants

NCT03717584
View directory record Official record
Conditions
Necrotizing Enterocolitis, Bronchopulmonary Dysplasia, Growth Failure
Interventions
Not listed
Lead sponsor
University of California, Davis
Other
Eligibility
Up to 33 Weeks
Enrollment
300 participants
Timeline
2018 – 2027
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Apr 3, 2026 · Synced Oct 26, 2026, 10:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Randomized Controlled Trial Investigating if Antibiotic Use in the First 48 Hours of Life Adversely Impacts the Preterm Infant Microbiome

NCT02477423
View directory record Official record
Conditions
Premature Birth of Newborn, Enterocolitis, Necrotizing
Interventions
Ampicillin, Gentamicins, Placebo
Drug
Lead sponsor
University of Chicago
Other
Eligibility
Up to 6 Hours
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 8, 2020 · Synced Oct 26, 2026, 10:37 AM EDT
Completed No phase listed Observational

Microbiome, Antibiotics, and Growth Infant Cohort

NCT03001167
View directory record Official record
Conditions
Obesity, Childhood, Antibiotic Side Effect
Interventions
Not listed
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
Up to 96 Hours
Enrollment
509 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 12, 2024 · Synced Oct 26, 2026, 10:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of Lactobacillus Rhamnosus GG (LGG) on Infant Colic

NCT01279265
View directory record Official record
Conditions
Colic, Inflammation
Interventions
Nutramigen with Enflora, Nutramigen A+
Dietary Supplement
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
3 Weeks to 3 Months
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 11, 2015 · Synced Oct 26, 2026, 10:37 AM EDT
Completed No phase listed Observational Results available

Growth and Microbiome Development in Very Low Birth Weight Infants Fed Primarily Mother's Own Milk vs. Donor Human Milk

NCT02573779
View directory record Official record
Conditions
Infant, Very Low Birth Weight
Interventions
Observational - no intervention
Other
Lead sponsor
Baylor College of Medicine
Other
Eligibility
Up to 3 Days
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 25, 2025 · Synced Oct 26, 2026, 10:37 AM EDT
Completed Not applicable Interventional

Effect of Curcumin on Gut Microbiota in IBS

NCT03568513
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Curcumin, Placebo
Dietary Supplement
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
10 Years to 18 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 21, 2021 · Synced Oct 26, 2026, 10:37 AM EDT
Completed Not applicable Interventional

A Growth and Hypoallergenicity Study of a New Formula for Infants With Cow Milk Allergy

NCT00664768
View directory record Official record
Conditions
Cow Milk Allergy
Interventions
Neocate Infant, new Neocate
Dietary Supplement
Lead sponsor
Nutricia North America
Industry
Eligibility
1 Day to 8 Months
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
22
States / cities
Chandler, Arizona • Tucson, Arizona • Bentonville, Arkansas + 18 more
Source: ClinicalTrials.gov public record
Updated Dec 9, 2020 · Synced Oct 26, 2026, 10:37 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Early Avocado Exposure on Development and the Gut Microbiome in American Hispanic Infants

NCT06876935
View directory record Official record
Conditions
Gut Microbiome, Neurocognitive Correlates of Eating Habits, Infant Growth
Interventions
Daily avocado
Other
Lead sponsor
Arizona State University
Other
Eligibility
3 Months to 6 Months
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Aug 27, 2025 · Synced Oct 26, 2026, 10:37 AM EDT
Completed Not applicable Interventional Results available

Multisensory Early Oral Administration of Human Milk in Preterm Infants

NCT06230848
View directory record Official record
Conditions
Infant Development, Stress
Interventions
Multisensory Early Oral Administration of Human Milk (M-MILK)
Other
Lead sponsor
Loyola University
Other
Eligibility
0 Years to 1 Year
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Maywood, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 8, 2026 · Synced Oct 26, 2026, 10:37 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Alteration of Stool Microbiota in Preterm Infants With Anemia

NCT03554278
View directory record Official record
Conditions
Anemia, Neonatal, Necrotizing Enterocolitis, Dysbiosis
Interventions
Not listed
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
7 Days to 30 Days
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 5, 2025 · Synced Oct 26, 2026, 10:37 AM EDT
Completed No phase listed Observational

Vitamin A, Stool Microbiota and Vaccine Response in Bangladeshi Infants

NCT02027610
View directory record Official record
Conditions
Vitamin A Deficiency
Interventions
Not listed
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
12 Months to 24 Months
Enrollment
258 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
2
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Nov 18, 2015 · Synced Oct 26, 2026, 10:37 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

GI Tract Biomarkers in Infants With Different Diets

NCT03751137
View directory record Official record
Conditions
Obesity, Childhood
Interventions
Not listed
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
6 Weeks to 3 Months
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2025
U.S. locations
1
States / cities
Wilmington, Delaware
Source: ClinicalTrials.gov public record
Updated Jun 4, 2025 · Synced Oct 26, 2026, 10:37 AM EDT