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ClinicalTrials.gov public records Last synced Sep 30, 2026, 5:43 PM EDT

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Showing 25–48 of 180 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Vitamin A Palmitate Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin A Kinetics and Mathematical Modeling in American Women

NCT03248700
View directory record Official record
Conditions
Vitamin A Kinetics
Interventions
Vitamin A tracer
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
19 Years to 30 Years · Female only
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2016
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 31, 2019 · Synced Sep 30, 2026, 5:43 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Trial of Antibody Responses by Vitamin Supplementation

NCT03859687
View directory record Official record
Conditions
Healthy Participants
Interventions
Vitamin A supplementation, No vitamin A supplementation
Biological
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
1 Year to 4 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2025
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 5, 2025 · Synced Sep 30, 2026, 5:43 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 21, 2009 · Synced Sep 30, 2026, 5:43 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Study That Evaluates the Decrease in Irritation When Using Additional Acne Treatment Products

NCT01313728
View directory record Official record
Conditions
Acne Vulgaris
Interventions
Dapsone plus Tretinoin Gel, Tretinoin Gel
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 40 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Broomall, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 15, 2012 · Synced Sep 30, 2026, 5:43 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study Comparing Tretinoin Gel Microsphere, 0.04% and RETIN-A MICRO ® Gel Microsphere, 0.04% in the Treatment of Acne Vulgaris

NCT07469228
View directory record Official record
Conditions
Acne Vulgaris
Interventions
Tretinoin Gel Microsphere, 0.04%, RETIN-A MICRO® (Tretinoin) Gel Microsphere, 0.04%, Placebo Control
Drug
Lead sponsor
Sun Pharmaceutical Industries, Inc.
Industry
Eligibility
12 Years to 40 Years
Enrollment
1,043 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Hawthorne, New York
Source: ClinicalTrials.gov public record
Updated Mar 13, 2026 · Synced Sep 30, 2026, 5:43 PM EDT
Active, not recruiting Not applicable Interventional

Virtual Reality and Computerized Cognitive Intervention for Mild Cognitive Impairment in Heart Failure

NCT05601817
View directory record Official record
Conditions
Heart Failure, Mild Cognitive Impairment
Interventions
Vita, Com, Vita+Com
Behavioral
Lead sponsor
Indiana University
Other
Eligibility
55 Years and older
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Mar 23, 2026 · Synced Sep 30, 2026, 5:43 PM EDT
Completed Phase 4 Interventional Results available

Adherence to Study Medication Compared to Generic Topical Clindamycin Plus Generic Topical Tretinoin in Subjects With Mild to Moderate Acne Vulgaris

NCT01047189
View directory record Official record
Conditions
Acne Vulgaris
Interventions
clindamycin phosphate 1.2% and tretinoin 0.025%, clindamycin 1% gel, tretinoin 0.025% cream
Drug
Lead sponsor
Wake Forest University
Other
Eligibility
12 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 10, 2018 · Synced Sep 30, 2026, 5:43 PM EDT
Not yet recruiting Not applicable Interventional

Vitamin A Supplementation and Breast Milk Vitamin A Levels in Mothers of Preterm Infants

NCT07736768
View directory record Official record
Conditions
Premature, Preterm Infant Health, Vitamin A Deficiency, Human Milk, Breastfeeding
Interventions
Oral multivitamin containing vitamin A
Dietary Supplement
Lead sponsor
University of Mississippi Medical Center
Other
Eligibility
18 Years to 45 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Jackson, Mississippi
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Sep 30, 2026, 5:43 PM EDT
Completed Phase 3 Interventional

Trial of Vitamins in HIV Progression and Transmission

NCT00197743
View directory record Official record
Conditions
HIV Infections, Disease Transmission, Vertical
Interventions
Vitamin A + Beta Carotene, Multivitamins, Placebo
Dietary Supplement · Other
Lead sponsor
Harvard School of Public Health (HSPH)
Other
Eligibility
18 Years and older · Female only
Enrollment
1,085 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1995 – 2003
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 11, 2010 · Synced Sep 30, 2026, 5:43 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effects of EED on Zn Absorption and Retention in Children From a Standard Dose

NCT02760095
View directory record Official record
Conditions
Environmental Enteric Dysfunction, Zinc Deficiency, Vitamin A Deficiency
Interventions
3 mg zinc sulfate supplement, 0.5 mg of 13C10-retinyl-acetate
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Months to 24 Months
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 1, 2019 · Synced Sep 30, 2026, 5:43 PM EDT
Completed Phase 1Phase 2 Interventional

Combination Therapy in Amyotrophic Lateral Sclerosis (ALS)

NCT00919555
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis
Interventions
Pioglitazone and Tretinoin, Tretinoin and Pioglitazone HCL, Placebo
Drug
Lead sponsor
Phoenix Neurological Associates, LTD
Other
Eligibility
18 Years to 85 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 30, 2012 · Synced Sep 30, 2026, 5:43 PM EDT
Completed Phase 1 Interventional

Vorinostat and Isotretinoin in Treating Patients With High-Risk Refractory or Recurrent Neuroblastoma

NCT01208454
View directory record Official record
Conditions
Localized Unresectable Neuroblastoma, Recurrent Neuroblastoma, Regional Neuroblastoma, Stage 4 Neuroblastoma, Stage 4S Neuroblastoma
Interventions
Isotretinoin, Laboratory Biomarker Analysis, Pharmacological Study, Vorinostat
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Up to 30 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2010
U.S. locations
12
States / cities
Los Angeles, California • Palo Alto, California • San Francisco, California + 9 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2015 · Synced Sep 30, 2026, 5:43 PM EDT
Completed Phase 1 Interventional

ATRA, Celecoxib, and Itraconazole as Maintenance

NCT02401295
View directory record Official record
Conditions
Relapsed Multiple Myeloma
Interventions
ATRA, Celecoxib, Itraconazole
Drug
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 75 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Feb 23, 2017 · Synced Sep 30, 2026, 5:43 PM EDT
Recruiting Early Phase 1 Interventional

Pilot Trial of Supplemental Vitamin A and Nicotinamide

NCT05702398
View directory record Official record
Conditions
Skin Cancer, Kidney Transplant Recipients
Interventions
Vitamin A, Nicotinamide, Other: Placebo
Drug · Other
Lead sponsor
Rhode Island Hospital
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Mar 20, 2026 · Synced Sep 30, 2026, 5:43 PM EDT
Completed Phase 1 Interventional

A Phase I Trial of Tamoxifen and 9-Cis-Retinoic Acid in Breast Cancer Patients

NCT00001504
View directory record Official record
Conditions
Breast Cancer, Breast Neoplasm
Interventions
9-cis-Retinoic Acid
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Not listed
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2002
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Sep 30, 2026, 5:43 PM EDT
Not listed Phase 2 Interventional

Bexarotene, Tretinoin, and Combination Chemotherapy in Treating Patients With Stage III or Stage IV Non-Small Cell Lung Cancer

NCT00514293
View directory record Official record
Conditions
Lung Cancer
Interventions
bexarotene, capecitabine, carboplatin, cisplatin, docetaxel, tretinoin
Drug
Lead sponsor
Raghu Nandan, M.D., Inc
Other
Eligibility
18 Years and older
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2007
U.S. locations
1
States / cities
Lakewood, California
Source: ClinicalTrials.gov public record
Updated Jan 10, 2014 · Synced Sep 30, 2026, 5:43 PM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Vitamin A, Its Receptors and Asthma

NCT00628329
View directory record Official record
Conditions
Asthma
Interventions
Not listed
Lead sponsor
University of Kansas
Other
Eligibility
18 Years to 64 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated May 7, 2012 · Synced Sep 30, 2026, 5:43 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Vitamin A and Zinc: Prevention of Pneumonia (VAZPOP) Study

NCT00228254
View directory record Official record
Conditions
Pneumonia, Diarrhea, Acute Upper Respiratory Tract Infections
Interventions
Zinc (12.5 mg/day), vitamin A 10,000 IU per week
Drug
Lead sponsor
Tufts University
Other
Eligibility
6 Months to 36 Months
Enrollment
2,582 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2004
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 28, 2005 · Synced Sep 30, 2026, 5:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Provitamin A Absorption and Conversion With Avocados

NCT01432210
View directory record Official record
Conditions
Healthy
Interventions
Post-prandial Feeding Study
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 70 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 30, 2016 · Synced Sep 30, 2026, 5:43 PM EDT
Terminated Phase 1Phase 2 Interventional

Arsenic Trioxide With or Without Tretinoin in Treating Patients With Hematologic Cancer That Has Not Responded to Previous Therapy

NCT00006220
View directory record Official record
Conditions
Leukemia, Lymphoma, Multiple Myeloma and Plasma Cell Neoplasm, Myelodysplastic Syndromes
Interventions
arsenic trioxide, tretinoin
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
15 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2002
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 6, 2013 · Synced Sep 30, 2026, 5:43 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Evaluation of Irritation by Two Facial Gels Applied to Opposite Sides of the Face

NCT00919191
View directory record Official record
Conditions
Acne Vulgaris
Interventions
Tretinoin gel, Adapalene and Benzoyl peroxide
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Broomall, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 15, 2012 · Synced Sep 30, 2026, 5:43 PM EDT
Completed Not applicable Interventional

Prevention of Malnutrition in Children With Sickle Cell Disease

NCT06397118
View directory record Official record
Conditions
Sickle Cell Disease, Malnutrition
Interventions
Maternal Nutrition Education, Standard Care
Behavioral
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
6 Months to 18 Months
Enrollment
146 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 17, 2026 · Synced Sep 30, 2026, 5:43 PM EDT
Active, not recruiting Phase 1 Interventional

Lenalidomide and Dinutuximab With or Without Isotretinoin in Treating Younger Patients With Refractory or Recurrent Neuroblastoma

NCT01711554
View directory record Official record
Conditions
Recurrent Neuroblastoma, Refractory Neuroblastoma
Interventions
Dinutuximab, Isotretinoin, Laboratory Biomarker Analysis, Lenalidomide, Pharmacological Study
Biological · Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Up to 21 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2027
U.S. locations
14
States / cities
Los Angeles, California • Palo Alto, California • San Francisco, California + 10 more
Source: ClinicalTrials.gov public record
Updated Sep 4, 2026 · Synced Sep 30, 2026, 5:43 PM EDT
Completed Phase 3 Interventional

Tretinoin, Cytarabine, and Daunorubicin Hydrochloride With or Without Arsenic Trioxide Followed by Tretinoin With or Without Mercaptopurine and Methotrexate in Treating Patients With Acute Promyelocytic Leukemia

NCT00003934
View directory record Official record
Conditions
Adult Acute Myeloid Leukemia With t(15;17)(q22;q12), Adult Acute Promyelocytic Leukemia (M3), Childhood Acute Promyelocytic Leukemia (M3), Untreated Adult Acute Myeloid Leukemia, Untreated Childhood Acute Myeloid Leukemia and Other Myeloid Malignancies
Interventions
tretinoin, daunorubicin hydrochloride, cytarabine, mercaptopurine, methotrexate, arsenic trioxide
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Not listed
Enrollment
420 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1999
U.S. locations
2
States / cities
Chicago, Illinois • Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 5, 2013 · Synced Sep 30, 2026, 5:43 PM EDT