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Showing 1–24 of 98 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Iron (ferrous sulfate) Clear all
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 28, 2026, 2:12 AM EDT
Completed Phase 2 Interventional Results available

Pilot Study: Randomized, Placebo-controlled Comparator Trial of IV vs Oral Iron Treatment of RLS With IDA. (IVOR-IDA)

NCT02499354
View directory record Official record
Conditions
Restless Legs Syndrome, Iron Deficiency Anemia
Interventions
Ferumoxytol intravenous, Ferrous sulfate
Drug
Lead sponsor
Auerbach Hematology Oncology Associates P C
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2022
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 29, 2024 · Synced Sep 28, 2026, 2:12 AM 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Withdrawn Phase 2 Interventional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 28, 2026, 2:12 AM EDT
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 28, 2026, 2:12 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 28, 2026, 2:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

How Does Iron Supplementation Affect Training and Performance in Female Collegiate Rowers?

NCT01383798
View directory record Official record
Conditions
Iron Deficiency (Without Anemia)
Interventions
Placebo, Ferrous sulfate
Dietary Supplement
Lead sponsor
Cornell University
Other
Eligibility
18 Years to 30 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Ithaca, New York
Source: ClinicalTrials.gov public record
Updated Mar 13, 2014 · Synced Sep 28, 2026, 2:12 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 28, 2026, 2:12 AM EDT
Completed Not applicable Interventional Results available

Does a Daily Iron Tablet Improve Anemia in Cystic Fibrosis

NCT01755455
View directory record Official record
Conditions
Cystic Fibrosis, Anemia, Iron-Deficiency
Interventions
Ferrous sulfate 325mg, Placebo
Drug
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years to 70 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
2
States / cities
Portland, Maine • Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Mar 15, 2017 · Synced Sep 28, 2026, 2:12 AM EDT
Completed Phase 3 Interventional Results available

Multicenter Randomized Active-controlled Study to Investigate Efficacy & Safety of IV FCM in Pediatric Patients With IDA

NCT03523117
View directory record Official record
Conditions
Iron Deficiency Anemia
Interventions
Ferric carboxymaltose, Ferrous Sulfate
Drug
Lead sponsor
American Regent, Inc.
Industry
Eligibility
1 Year to 17 Years
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
16
States / cities
Little Rock, Arkansas • Doral, Florida • Miami, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Jun 21, 2022 · Synced Sep 28, 2026, 2:12 AM EDT
Terminated Phase 2 Interventional Results available

Erythropoietin to Prevent Unnecessary Transfusions In Patients With Cyanotic CHD - A Prospective Control Trial

NCT02564796
View directory record Official record
Conditions
Cyanotic Congenital Heart Disease, Anemia, Cyanosis, Congenital Heart Disease
Interventions
Epoetin Alfa and Iron, Iron
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
Up to 8 Weeks
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Dec 1, 2021 · Synced Sep 28, 2026, 2:12 AM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

A Pilot Study Comparing Tolerance of Oral Heme Iron Polypeptide With Oral Ionic Iron

NCT01865175
View directory record Official record
Conditions
Iron Deficiency
Interventions
ionic iron, heme iron polypeptide
Drug
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
7 Years to 70 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 13, 2016 · Synced Sep 28, 2026, 2:12 AM 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 28, 2026, 2:12 AM EDT
Completed Phase 4 Interventional Results available

Effect of Ferrlecit® Versus Oral Iron on Iron Deficient Chronic Kidney Disease (CKD) Patients Receiving Erythropoietic Agents

NCT00224042
View directory record Official record
Conditions
Anemia, Iron-Deficiency, Kidney Failure, Chronic
Interventions
Sodium Ferric Gluconate complex in sucrose, Ferrous sulfate tablets
Drug
Lead sponsor
Watson Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2003
U.S. locations
23
States / cities
Birmingham, Alabama • Tucson, Arizona • Los Angeles, California + 20 more
Source: ClinicalTrials.gov public record
Updated Mar 28, 2012 · Synced Sep 28, 2026, 2:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Trial Comparing Iron Supplementation Versus Routine Iron Intake in Very Low Birth Weight Infants

NCT01125163
View directory record Official record
Conditions
Iron Deficiency Anemia
Interventions
Iron Supplement, multivitamin
Dietary Supplement
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
24 Weeks to 32 Weeks
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 3, 2019 · Synced Sep 28, 2026, 2:12 AM EDT
Completed Phase 3 Interventional Results available

Safety and Tolerability of a Single Dose of FCM vs. Standard of Care in Treating Iron Deficiency Anemia

NCT00704353
View directory record Official record
Conditions
Anemia
Interventions
Ferric Carboxymaltose, Standard Medical Care (SMC)
Drug
Lead sponsor
American Regent, Inc.
Industry
Eligibility
18 Years and older
Enrollment
735 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Norristown, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 19, 2018 · Synced Sep 28, 2026, 2:12 AM EDT
Completed Phase 2 Interventional Results available

Autoimmunity-blocking Antibody for Tolerance in Recently Diagnosed Type 1 Diabetes

NCT00129259
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
Anti-CD3 mAb, Diabetes Standard of Care Treatment, Iron supplementation
Biological · Other · Dietary Supplement
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
8 Years to 30 Years
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
7
States / cities
San Francisco, California • Denver, Colorado • New Haven, Connecticut + 3 more
Source: ClinicalTrials.gov public record
Updated May 21, 2017 · Synced Sep 28, 2026, 2:12 AM 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 28, 2026, 2:12 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 28, 2026, 2:12 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Helicobacter Pylori Eradication Trial to Reduce Iron Deficiency in Children

NCT00364104
View directory record Official record
Conditions
Iron Deficiency
Interventions
Quadruple sequential Helicobacter pylori eradication + iron sulfate, Quadruple sequential Helicobacter pylori eradication therapy, Ferrous sulfate, Placebo
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
36 Months to 120 Months
Enrollment
125 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated Jun 29, 2009 · Synced Sep 28, 2026, 2:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Meals to Improve Absorption of Iron Supplements

NCT04793906
View directory record Official record
Conditions
Iron-deficiency, Iron Deficiency Anemia, Iron Deficiency Anemia Treatment
Interventions
Iron supplement with a lunch meal containing beef, Iron supplement with a lunch meal containing plant-based alternative
Other
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Feb 6, 2025 · Synced Sep 28, 2026, 2:12 AM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy of a Hematinic Agent in the Treatment of Postpartum Patients

NCT00354484
View directory record Official record
Conditions
Postpartum Anemia
Interventions
Ferric Carboxymaltose (FCM), Ferrous Sulfate tablets
Drug
Lead sponsor
American Regent, Inc.
Industry
Eligibility
Female only
Enrollment
291 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Norristown, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 19, 2018 · Synced Sep 28, 2026, 2:12 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 28, 2026, 2:12 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 28, 2026, 2:12 AM EDT
Completed Phase 2 Interventional

Iron Treatment of Sleep Disorders in Children With Autism Spectrum Disorder

NCT01745497
View directory record Official record
Conditions
Autism Spectrum Disorder, Insomnia
Interventions
Ferrous sulfate, Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
2 Years to 10 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
3
States / cities
Aurora, Colorado • Rochester, New York • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 2, 2020 · Synced Sep 28, 2026, 2:12 AM EDT