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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: ferrous sulfate Clear all
Terminated Phase 4 Interventional Results available

Oral Iron Frequency for Childhood Restless Leg Syndrome/Periodic Limb Movement Disorder

NCT04610827
View directory record Official record
Conditions
Sleep Disorder, Restless Legs Syndrome, Periodic Limb Movement Sleep Disorder, Iron-deficiency
Interventions
Ferrous sulfate
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
2 Years to 10 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 21, 2024 · Synced Sep 25, 2026, 11:17 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Kids With Iron Deficiency and Scoliosis

NCT06042699
View directory record Official record
Conditions
Adolescent Idiopathic Scoliosis, Neuromuscular Scoliosis, Perioperative/Postoperative Complications, Iron Deficiencies, Anemia, Spinal Fusion, Postoperative Cognitive Dysfunction
Interventions
Oral ferrous sulfate, Oral placebo tablet
Dietary Supplement
Lead sponsor
Columbia University
Other
Eligibility
10 Years to 26 Years
Enrollment
275 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Sep 25, 2026, 11:17 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Prevention of Iron Deficiency in Breastfed Infants

NCT01444261
View directory record Official record
Conditions
Iron Deficiency, Anemia
Interventions
Fer-in-Sol, control
Dietary Supplement · Other
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
4 Weeks to 9 Months
Enrollment
219 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Mar 30, 2017 · Synced Sep 25, 2026, 11:17 PM EDT
Recruiting Phase 4 Interventional

Oral Iron Supplementation on Alternate vs. Consecutive Days for Iron Deficiency Anemia in Pregnancy

NCT06492512
View directory record Official record
Conditions
Iron-deficiency Anemia (IDA), Pregnancy
Interventions
daily ferrous sulfate with an equivalent elemental iron dose of 65 mg per pill, alternate day ferrous sulfate with an equivalent elemental iron dose of 65 mg per pill
Drug
Lead sponsor
Southern Illinois University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Springfield, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Sep 25, 2026, 11:17 PM EDT
Completed Phase 3 Interventional Results available

Comparison of Oral Ferrous Sulfate to Intravenous Ferumoxytol in Antepartum Iron Deficiency Anemia

NCT04253626
View directory record Official record
Conditions
Pregnancy Related, Anemia, Iron Deficiency
Interventions
Ferumoxytol Injection [Feraheme], Ferrous Sulfate
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older · Female only
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Sep 25, 2026, 11:17 PM EDT
Recruiting Phase 4 Interventional

Oral Iron in Children With Chronic Kidney Disease

NCT03991169
View directory record Official record
Conditions
Chronic Kidney Insufficiency, Chronic Kidney Diseases
Interventions
Ferrous Sulfate
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
1 Year to 21 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2028
U.S. locations
2
States / cities
New York, New York • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 10, 2025 · Synced Sep 25, 2026, 11:17 PM EDT
Completed Phase 3 Interventional Results available

Darbepoetin Alfa With or Without Iron in Treating Anemia Caused By Chemotherapy in Patients With Cancer

NCT00661999
View directory record Official record
Conditions
Anemia, Leukemia, Lymphoma, Lymphoproliferative Disorder, Multiple Myeloma and Plasma Cell Neoplasm, Precancerous Condition, Unspecified Adult Solid Tumor, Protocol Specific
Interventions
darbepoetin alfa, ferrous sulfate, sodium ferric gluconate complex in sucrose, placebo
Biological · Dietary Supplement · Drug + 1 more
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
502 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
2
States / cities
Scottsdale, Arizona • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 16, 2011 · Synced Sep 25, 2026, 11:17 PM EDT
Completed Phase 3 Interventional Results available

Comparison of the Safety and Efficacy of Intravenous Iron Versus Oral Iron in the Treatment of Anemia Secondary to Heavy Uterine Bleeding

NCT00395993
View directory record Official record
Conditions
Anemia
Interventions
Ferric Carboxymaltose (FCM), Ferrous Sulfate tablets
Drug
Lead sponsor
American Regent, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
456 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Norristown, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 19, 2018 · Synced Sep 25, 2026, 11:17 PM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

IV Iron vs Oral Iron for Treatment of Anemia in Women With Abnormal Uterine Bleeding

NCT04205266
View directory record Official record
Conditions
Anemia, Iron Deficiency, Heavy Menstrual Bleeding
Interventions
Ferumoxytol, Ferrous Sulfate
Drug
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 20, 2023 · Synced Sep 25, 2026, 11:17 PM EDT
Completed Not applicable Interventional

Iron Therapy for Autosomal Dominant Hypophosphatemic Rickets: A Pilot Project.

NCT02233322
View directory record Official record
Conditions
Autosomal Dominant Hypophosphatemic Rickets
Interventions
Iron
Dietary Supplement
Lead sponsor
Indiana University
Other
Eligibility
25 Months and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Nov 13, 2019 · Synced Sep 25, 2026, 11:17 PM EDT
Recruiting Phase 2 Interventional

Darbe Plus IV Iron to Decrease Transfusions While Maintaining Iron Sufficiency in Preterm Infants

NCT05340465
View directory record Official record
Conditions
Prematurity, Iron-deficiency, Iron Deficiency Anemia, Iron Malabsorption
Interventions
Darbepoetin Alfa, Low Molecular Weight Iron Dextran, Ferumoxytol injection, Oral iron supplements
Drug
Lead sponsor
University of Washington
Other
Eligibility
Up to 3 Days
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 25, 2026 · Synced Sep 25, 2026, 11:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Iron and the Breast-Fed Infant: Iron Status and Two Regimens of Iron Supplementation

NCT00760890
View directory record Official record
Conditions
Iron Deficiency
Interventions
Fer-In-Sol (ferrous sulfate), Iron fortified cereal
Dietary Supplement
Lead sponsor
National Institutes of Health (NIH)
NIH
Eligibility
1 Month to 24 Months
Enrollment
171 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2005
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Sep 25, 2008 · Synced Sep 25, 2026, 11:17 PM EDT
Terminated Phase 2 Interventional Results available

Efficacy of Ferric Carboxymaltose in Gastrointestinal Stromal Tumor (GIST) Patients With Iron Deficiency Anemia (IDA) Receiving Systemic Therapy

NCT02949947
View directory record Official record
Conditions
Malignant Neoplasms of Mesothelial and Soft Tissue, Gastrointestinal Stromal Tumor With Neurogenic Differentiation
Interventions
Ferric Carboxymaltose, Iron Supplements, Questionnaire
Drug · Dietary Supplement · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 5, 2020 · Synced Sep 25, 2026, 11:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Daily vs Intermittent Iron Therapy in Pregnancy

NCT03706638
View directory record Official record
Conditions
Iron Deficiency Anemia of Pregnancy
Interventions
Ferrous Sulfate
Dietary Supplement
Lead sponsor
UConn Health
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 20, 2020 · Synced Sep 25, 2026, 11:17 PM EDT
Terminated Phase 4 Interventional Results available

A Clinical Trial of Oral Versus IV Iron in Patients With Chronic Kidney Disease

NCT00830037
View directory record Official record
Conditions
Chronic Kidney Disease, Iron-deficiency Anemia
Interventions
IV Iron, Ferrous Sulfate
Drug
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
136 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2008
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Jul 20, 2016 · Synced Sep 25, 2026, 11:17 PM EDT
Completed Phase 2 Interventional

Hemoglobin and Iron Recovery Study

NCT01555060
View directory record Official record
Conditions
Recovery of Hemoglobin and Iron Stores After Blood Donation
Interventions
ferrous gluconate
Dietary Supplement
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years and older
Enrollment
215 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
4
States / cities
San Francisco, California • Farmington, Connecticut • Pittsburgh, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 22, 2014 · Synced Sep 25, 2026, 11:17 PM EDT
Completed Phase 3 Interventional Results available

Ferric Carboxymaltose (FCM) Assessment in Subjects With Iron Deficiency Anaemia and Non-dialysis-dependent Chronic Kidney Disease (NDD-CKD)

NCT00994318
View directory record Official record
Conditions
Iron Deficiency Anaemia, Chronic Kidney Disease
Interventions
FCM (Ferric carboxymaltose) high ferritin target, FCM (Ferric carboxymaltose) low ferritin target, Oral Iron (Ferrous sulphate)
Drug
Lead sponsor
Vifor Pharma
Industry
Eligibility
18 Years and older
Enrollment
626 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Wilmington, North Carolina
Source: ClinicalTrials.gov public record
Updated May 19, 2014 · Synced Sep 25, 2026, 11:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Treatment of Non-Anemic Iron Deficiency in Pregnancy

NCT05423249
View directory record Official record
Conditions
Non-anemic Iron Deficiency
Interventions
Ferrous sulfate, Prenatal, Docusate Sodium, Ascorbic Acid 500Mg Tab, Placebo
Drug
Lead sponsor
Stony Brook University
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
3
States / cities
Bohemia, New York • Commack, New York • East Setauket, New York
Source: ClinicalTrials.gov public record
Updated Nov 28, 2024 · Synced Sep 25, 2026, 11:17 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Iron Bioavailability From Cereal-based Foods

NCT05061290
View directory record Official record
Conditions
Iron Bioavailability
Interventions
Control Porridge, Reference Porridge A, Test Porridge B, Test Porridge C, Test Porridge D
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Sep 27, 2022 · Synced Sep 25, 2026, 11:17 PM EDT
Terminated Phase 4 Interventional

IRONICA: IRON Repletion In Heart Failure - A Comparison of Oral and IV Approaches

NCT07053475
View directory record Official record
Conditions
Heart Failure, Heart Failure With Reduced Ejection Fraction (HFrEF), Heart Failure With Preserved Ejection Fraction (HFPEF), Iron Deficiency, Iron-deficiency Anemia (IDA)
Interventions
Ferric Carboxymaltose, Ferrous Sulfate
Drug
Lead sponsor
Syed Hamza Mufarrih
Other
Eligibility
18 Years to 100 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Bowling Green, Kentucky
Source: ClinicalTrials.gov public record
Updated Jul 19, 2026 · Synced Sep 25, 2026, 11:17 PM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Iron Supplementation and Intestinal Health

NCT04497012
View directory record Official record
Conditions
Anemia of Prematurity, Very Low Birth Weight Infant
Interventions
2mg/kg/day Iron Sulfate, 6 mg/kg/day Iron Sulfate
Drug
Lead sponsor
University of South Florida
Other
Eligibility
1 Day to 6 Months
Enrollment
183 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jan 21, 2025 · Synced Sep 25, 2026, 11:17 PM EDT
Completed Not applicable Interventional

Daily vs Alternate Day Iron Supplementation for Pregnant Women With Iron Deficiency Anemia

NCT03562143
View directory record Official record
Conditions
Iron Deficiency Anemia
Interventions
Ferrous Sulfate
Dietary Supplement
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 64 Years · Female only
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 17, 2020 · Synced Sep 25, 2026, 11:17 PM EDT
Completed Phase 3 Interventional Results available

VIT45 Versus Oral Iron in the Treatment of Anemia in Non-Dialysis Dependent Chronic Kidney Disease

NCT00317239
View directory record Official record
Conditions
Anemia
Interventions
Ferrous Sulfate tablets, Ferric Carboxymaltose (FCM)
Drug
Lead sponsor
American Regent, Inc.
Industry
Eligibility
12 Years and older
Enrollment
255 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Norristown, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 19, 2018 · Synced Sep 25, 2026, 11:17 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Adherence With Iron Sprinkles Among High-Risk Infants

NCT00136266
View directory record Official record
Conditions
Anemia, Iron Deficiency
Interventions
Ferrous sulphate drops with vitamins A, D, and C, Ferrous fumarate sprinkles with vitamins and minerals
Drug
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
5 Months to 7 Months
Enrollment
128 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 2, 2016 · Synced Sep 25, 2026, 11:17 PM EDT