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Showing 1–24 of 79 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Ferrous sulfate tablets Clear all
Completed Phase 2 Interventional Results available

Anemia Studies in CKD: Erythropoiesis Via a Novel Prolyl Hydroxylase Inhibitor (PHI) Daprodustat- Iron (ASCEND: Fe)

NCT03457701
View directory record Official record
Conditions
Anaemia
Interventions
Daprodustat, rhEPO, Ferrous sulfate containing the stable iron isotope (57Fe), Ferrous sulfate containing the stable iron isotope (58Fe)
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
3
States / cities
Fort Worth, Texas • Lufkin, Texas • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Mar 26, 2024 · Synced Sep 8, 2026, 9:22 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Intravenous Iron vs. Oral Iron Supplementation for Postpartum Anemia

NCT05047211
View directory record Official record
Conditions
Anemia, Iron Deficiency, Delivery Complication
Interventions
Ferrous sulfate, Iron dextran
Drug
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 28, 2023 · Synced Sep 8, 2026, 9:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Iron Supplementation and Side Effects

NCT04018300
View directory record Official record
Conditions
Iron Deficiency Anemia, Iron Overload
Interventions
Ferrous sulfate, Aspiron, Placebo
Dietary Supplement · Other
Lead sponsor
Iowa State University
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Ames, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 11, 2019 · Synced Sep 8, 2026, 9:22 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 8, 2026, 9:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Relative Bioavailability of Two Formulations of AKB-6548 and the Food Effect of a New Tablet in Healthy Adult Subjects

NCT02412449
View directory record Official record
Conditions
Healthy
Interventions
AKB-6548 tablet, reference formulation given in the fasted state, AKB-6548 tablet, test formulation given in the fasted state., AKB-6548 tablet, test formulation given in the fed state
Drug
Lead sponsor
Akebia Therapeutics
Industry
Eligibility
18 Years to 55 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Kalamazoo, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 13, 2018 · Synced Sep 8, 2026, 9:22 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 8, 2026, 9:22 PM EDT
Withdrawn Not applicable Interventional

Capsule Endoscopy Versus Conservative Therapy for Obscure Gastrointestinal Bleeding

NCT01837030
View directory record Official record
Conditions
Hemorrhage, Anemia
Interventions
Ferrous sulfate, Capsule Endoscopy
Dietary Supplement · Device
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jun 13, 2018 · Synced Sep 8, 2026, 9:22 PM EDT
Completed Phase 3 Interventional Results available

Oral Iron Versus Oral Iron Plus a Web-based Behavioral Intervention in Young Children (IRONCHILD)

NCT04371536
View directory record Official record
Conditions
Iron Deficiency Anemia, Iron-deficiency
Interventions
Ferrous Sulfate, IRONCHILD
Drug · Behavioral
Lead sponsor
Baylor College of Medicine
Other
Eligibility
12 Months to 48 Months
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 5, 2023 · Synced Sep 8, 2026, 9:22 PM EDT
Completed Not applicable Interventional Results available

Impact of Ferric Citrate vs Ferrous Sulfate on Iron Parameters and Hemoglobin in Individuals With CKD and Iron Deficiency

NCT02888171
View directory record Official record
Conditions
Chronic Kidney Disease, Iron Deficiency, Anemia
Interventions
ferric citrate, ferrous sulfate
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Mar 23, 2020 · Synced Sep 8, 2026, 9:22 PM EDT
Completed Phase 2 Interventional Results available

Efficacy of Enteral Iron Supplementation in Critical Illness

NCT00450177
View directory record Official record
Conditions
Anemic, Critically Ill Patients
Interventions
Ferrous Sulfate, Placebo Oral Tablet
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 17, 2019 · Synced Sep 8, 2026, 9:22 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Pilot Trial Investigating Every Other Day Dosing of Oral Iron in Premature Infants (IQONic)

NCT06555315
View directory record Official record
Conditions
Very Low Birth Weight Infant, Premature Infants, Anemia of Prematurity, Iron Deficiency, Anaemia in Children, Extremely Low Birth Weight
Interventions
6 mg/kg of oral iron as ferrous sulfate administered every other day., 6 mg/kg of oral iron as ferrous sulfate administered every day.
Dietary Supplement
Lead sponsor
CHRISTUS Health
Other
Eligibility
26 Weeks to 32 Weeks
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Aug 14, 2024 · Synced Sep 8, 2026, 9:22 PM EDT
Withdrawn Phase 2 Interventional

IV Iron Sucrose vs Oral FeSO4 in Treating IDA in Pediatric IBD

NCT01438372
View directory record Official record
Conditions
Iron Deficiency Anemia, Inflammatory Bowel Disease
Interventions
Intravenous iron sucrose, Oral ferrous sulfate
Drug
Lead sponsor
Wayne State University
Other
Eligibility
12 Years to 17 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 6, 2014 · Synced Sep 8, 2026, 9:22 PM EDT
Completed Phase 3 Interventional Results available

Comparison of Safety and Efficacy of Intravenous Iron Versus Oral Iron in Chronic Renal Failure Subjects With Anemia

NCT00236977
View directory record Official record
Conditions
Anemia
Interventions
Venofer, Ferrous Sulfate
Drug
Lead sponsor
American Regent, Inc.
Industry
Eligibility
18 Years and older
Enrollment
182 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
1
States / cities
Valley Forge, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 5, 2020 · Synced Sep 8, 2026, 9:22 PM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

Intravenous Iron Versus Oral Iron for the Treatment of Iron Deficiency Anemia

NCT06366698
View directory record Official record
Conditions
Iron Deficiency Anemia of Pregnancy
Interventions
Venofer 200 MG Per 10 ML Injection, Ferrous sulfate
Drug
Lead sponsor
Arrowhead Regional Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Colton, California
Source: ClinicalTrials.gov public record
Updated Apr 15, 2024 · Synced Sep 8, 2026, 9:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Host Iron Status and Iron Supplement Use on Erythrocytic Stage of Plasmodium Falciparum

NCT01027663
View directory record Official record
Conditions
Iron Deficiency Anemia, Malaria
Interventions
Iron Supplement
Dietary Supplement
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 70 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2015
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 7, 2016 · Synced Sep 8, 2026, 9:22 PM EDT
Completed No phase listed Observational

Impact of Iron Supplementation Treatment on Brain Iron Concentrations

NCT04144790
View directory record Official record
Conditions
ADHD, Iron-deficiency, Restless Legs Syndrome, Periodic Limb Movement Sleep Disorder
Interventions
ferrous sulfate
Dietary Supplement
Lead sponsor
Hugo W. Moser Research Institute at Kennedy Krieger, Inc.
Other
Eligibility
5 Years to 18 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 13, 2025 · Synced Sep 8, 2026, 9:22 PM EDT
Completed Phase 2Phase 3 Interventional Results available

2 Doses of Ferrlecit Versus Oral Iron to Treat Iron-deficiency Anemia in Peritoneal Dialysis Patients.

NCT00223977
View directory record Official record
Conditions
Iron Deficiency Anemia
Interventions
Sodium Ferric Gluconate Complex, Oral Iron
Drug
Lead sponsor
Watson Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
146 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
19
States / cities
Birmingham, Alabama • Mesa, Arizona • Los Angeles, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jul 7, 2013 · Synced Sep 8, 2026, 9:22 PM EDT
Completed Not applicable Interventional

Oral Iron Supplementation in Pulmonary Hypertension

NCT01446848
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
iron supplement
Dietary Supplement
Lead sponsor
The Cleveland Clinic
Other
Eligibility
21 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 11, 2014 · Synced Sep 8, 2026, 9:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Iron Supplements on the Growth of Enteric Pathogens

NCT05762380
View directory record Official record
Conditions
Iron-deficiency, Iron Deficiency Anaemia Due to Dietary Causes, Iron Deficiency Anemia Treatment, Iron Deficiency Anemia
Interventions
Ferrous sulfate, Ferrous sulfate-enriched Aspergillus oryzae (Ao iron)
Dietary Supplement
Lead sponsor
Iowa State University
Other
Eligibility
18 Years to 44 Years · Female only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Ames, Iowa
Source: ClinicalTrials.gov public record
Updated Mar 8, 2023 · Synced Sep 8, 2026, 9:22 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 8, 2026, 9:22 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

How Does Perimenopausal Menorrhagia Affect Women's Quality of Life and Cognitive Function?

NCT06798584
View directory record Official record
Conditions
Iron Deficiency Anemia Treatment, Iron Deficiency, Iron Deficiency (Without Anemia)
Interventions
FeoSol Original Iron Supplement Tablets, 21st Century Gelatin Capsules
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
18 Years and older · Female only
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Feb 12, 2025 · Synced Sep 8, 2026, 9:22 PM EDT
Not yet recruiting Phase 1Phase 2 Interventional

A Clinical Trial of Iron Supplementation for Youth With ADHD and Restless Sleep

NCT07061470
View directory record Official record
Conditions
ADHD, Sleep Problems
Interventions
Ferrous Sulfate, Placebo
Dietary Supplement · Other
Lead sponsor
Hugo W. Moser Research Institute at Kennedy Krieger, Inc.
Other
Eligibility
8 Years to 18 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Sep 8, 2026, 9:22 PM EDT
Recruiting Phase 3 Interventional

Intravenous Versus Oral Iron for Treating Iron-Deficiency Anemia in Pregnancy

NCT05462704
View directory record Official record
Conditions
Iron Deficiency Anemia, Pregnancy
Interventions
Ferric derisomaltose, Ferrous sulfate
Drug
Lead sponsor
Women and Infants Hospital of Rhode Island
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
8
States / cities
Birmingham, Alabama • Miami, Florida • Ann Arbor, Michigan + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2025 · Synced Sep 8, 2026, 9:22 PM EDT
Withdrawn Not applicable Interventional

Iron Prophylaxis for Anemia in Infants With Cyanotic Congenital Heart Disease

NCT00459225
View directory record Official record
Conditions
Anemia
Interventions
Iron (ferrous sulfate)
Drug
Lead sponsor
Emory University
Other
Eligibility
Up to 2 Months
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 8, 2014 · Synced Sep 8, 2026, 9:22 PM EDT