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Showing 1–24 of 97 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Ferrous Sulfate Clear all
Recruiting Phase 3 Interventional

Trial of IV vs Oral Iron Treatment of Iron Deficiency Anemia in the Post-Operative Bariatric Surgical Patient

NCT04268849
View directory record Official record
Conditions
Iron Deficiency Anemia
Interventions
Ferumoxytol, Saline, Ferrous sulfate tablets, Vitamin C
Drug
Lead sponsor
Auerbach Hematology Oncology Associates P C
Other
Eligibility
18 Years and older
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 2, 2025 · Synced Sep 2, 2026, 8:21 AM EDT
Completed Phase 4 Interventional

Effect of Iron Therapy as an Adjunct to Epoetin Alfa in the Anemia of Cancer Chemotherapy

NCT00224068
View directory record Official record
Conditions
Anemia
Interventions
Sodium ferric gluconate, ferrous sulfate, standard of care
Drug
Lead sponsor
Watson Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2003
U.S. locations
32
States / cities
Bakersfield, California • Chula Vista, California • Long Beach, California + 29 more
Source: ClinicalTrials.gov public record
Updated Mar 1, 2012 · Synced Sep 2, 2026, 8:21 AM 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 2, 2026, 8:21 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Intravenous Ferric Carboxymaltose (FCM) in Patients With Iron Deficiency Anemia (IDA)

NCT00982007
View directory record Official record
Conditions
Iron Deficiency Anemia
Interventions
Ferric Carboxymaltose (FCM), Ferrous Sulfate Tablets, IV Iron (standard of care)
Drug
Lead sponsor
American Regent, Inc.
Industry
Eligibility
18 Years and older
Enrollment
997 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Norristown, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 19, 2018 · Synced Sep 2, 2026, 8:21 AM EDT
Completed Not applicable Interventional

Iron Supplement to Improve Iron Status Following Bariatric Surgery

NCT02404012
View directory record Official record
Conditions
Anemia, Iron Deficiency
Interventions
Oral iron supplementation
Dietary Supplement
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 4, 2022 · Synced Sep 2, 2026, 8:21 AM 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 2, 2026, 8:21 AM 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 2, 2026, 8:21 AM EDT
Terminated Phase 4 Interventional

Study of the Efficacy and Safety of Ferrlecit in the Maintenance Dosing in Hemodialysis Patients.

NCT00223938
View directory record Official record
Conditions
Anemia
Interventions
Oral Iron, sodium ferric gluconate
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
8
States / cities
Hot Springs, Arkansas • Orange County, California • Simi Valley, California + 5 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2021 · Synced Sep 2, 2026, 8:21 AM EDT
Completed Phase 3 Interventional Results available

Comparison of the Safety and Efficacy of Intravenous Iron Versus Oral Iron in Subjects Who Display Postpartum Anemia

NCT00396292
View directory record Official record
Conditions
Anemia
Interventions
Oral iron tablets, VIT-45
Drug
Lead sponsor
American Regent, Inc.
Industry
Eligibility
Female only
Enrollment
361 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 4, 2018 · Synced Sep 2, 2026, 8:21 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Enhancing Treatment of Iron Deficiency and Iron Deficiency Anemia With an Antioxidant, Vitamin E

NCT01700426
View directory record Official record
Conditions
Iron Deficiency, Iron Deficiency Anemia
Interventions
Vitamin E, Placebo
Drug · Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
9 Months to 2 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 26, 2014 · Synced Sep 2, 2026, 8:21 AM EDT
Completed Phase 4 Interventional Results available

Intravenous Iron for Iron-deficiency Anemia in Pregnancy: a Randomized Controlled Trial

NCT03438227
View directory record Official record
Conditions
Iron Deficiency Anemia of Pregnancy, Iron Malabsorption
Interventions
Iron dextran, Ferrous sulfate 325mg
Drug
Lead sponsor
Indiana University
Other
Eligibility
Female only
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
2
States / cities
Indianapolis, Indiana • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 10, 2024 · Synced Sep 2, 2026, 8:21 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Randomized Trial of Iron Supplementation to Prevent Anemia in Very-low-birth-weight Infants

NCT01224236
View directory record Official record
Conditions
Anemia
Interventions
Iron Supplement, control
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
Up to 8 Weeks
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 18, 2015 · Synced Sep 2, 2026, 8:21 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Community Trial of Zinc Supplementation on Preschool Child Mortality and Morbidity in Southern Nepal

NCT00109551
View directory record Official record
Conditions
Nutrition
Interventions
zinc sulphate dietary supplement, iron sulphate-folic acid dietary supplement
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
1 Month to 36 Months
Enrollment
58,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2006
U.S. locations
2
States / cities
Baltimore, Maryland • Ithaca, New York
Source: ClinicalTrials.gov public record
Updated Apr 30, 2013 · Synced Sep 2, 2026, 8:21 AM EDT
Terminated Phase 4 Interventional Results available

Daily Versus Alternate Day Iron Supplementation for the Treatment of Iron Deficiency Anemia in Pregnancy

NCT04594070
View directory record Official record
Conditions
Pregnancy Related, Iron Deficiency Anemia of Pregnancy
Interventions
Ferrous sulfate
Drug
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 23, 2024 · Synced Sep 2, 2026, 8:21 AM EDT
Completed Phase 3 Interventional Results available

Evaluate the Safety and Efficacy of Ferric Maltol Oral Suspension vs. Ferrous Sulfate Oral Liquid in Children and Adolescents Aged 2 to 17 Years With Iron-deficiency Anaemia, With a Single Arm Study in Infants Aged 1 Month to Less Than 2 Years

NCT05126901
View directory record Official record
Conditions
Anemia, Iron-deficiency
Interventions
Ferric Maltol, Ferrous sulfate
Drug
Lead sponsor
Shield Therapeutics
Industry
Eligibility
1 Month to 17 Years
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
14
States / cities
Saraland, Alabama • Homestead, Florida • Kissimmee, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Sep 2, 2026, 8:21 AM 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 2, 2026, 8:21 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Once Versus Twice Daily Iron Supplementation in Pregnant Women

NCT02839096
View directory record Official record
Conditions
Anemia in Pregnancy
Interventions
Placebo, Ferrous Sulfate
Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years and older · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 2, 2026, 8:21 AM 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 2, 2026, 8:21 AM 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 2, 2026, 8:21 AM 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 2, 2026, 8:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Taking Prenatal Vitamin-mineral Supplements During Lactation on Iron Status and Markers of Oxidation

NCT01047098
View directory record Official record
Conditions
Iron Overload, Oxidative Stress, Iron-deficiency Anemia
Interventions
Iron, Placebo
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years and older · Female only
Enrollment
114 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced Sep 2, 2026, 8:21 AM EDT
Withdrawn Phase 3 Interventional

Efficacy and Safety Study of Ulipristal Acetate in Females With Anemia Associated With Uterine Leiomyoma

NCT01553123
View directory record Official record
Conditions
Leiomyomas
Interventions
Ulipristal Acetate, Iron
Drug
Lead sponsor
Watson Pharmaceuticals
Industry
Eligibility
18 Years to 50 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
47
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 41 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2013 · Synced Sep 2, 2026, 8:21 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Early Iron Exposure on the Gut Microbiota in Young Infants

NCT03828708
View directory record Official record
Conditions
Infant Development
Interventions
Iron in infant formula
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
1 Day to 4 Months
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 1, 2023 · Synced Sep 2, 2026, 8:21 AM 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 2, 2026, 8:21 AM EDT