Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 19, 2026, 2:04 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 90 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Levothyroxine Clear all
Terminated Phase 4 Interventional Accepts healthy volunteers

Comparison of Levothyroxine Formulation in Hypothyroid Patients With Enteral Feeding

NCT04878614
View directory record Official record
Conditions
Hypothyroidism
Interventions
Levothyroxine Tablet, Levothyroxine Sodium
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 10, 2023 · Synced Oct 19, 2026, 2:04 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Postpartum Thyroid Measures and Mood

NCT00565032
View directory record Official record
Conditions
Postpartum Depression
Interventions
Not listed
Lead sponsor
Oklahoma State University Center for Health Sciences
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2001
U.S. locations
1
States / cities
Tulsa, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jan 28, 2010 · Synced Oct 19, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Generic vs. Name-Brand Levothyroxine

NCT00403390
View directory record Official record
Conditions
Congenital Hypothyroidism, Hypothyroidism
Interventions
Brand Name Levothyroxine (Synthroid), Generic formulation of Levothyroxine
Drug
Lead sponsor
Boston Children's Hospital
Other
Eligibility
3 Years to 18 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 23, 2018 · Synced Oct 19, 2026, 2:04 PM EDT
Terminated Phase 4 Interventional Results available

Levothyroxine Replacement With Liquid Gel Capsules vs Tablets Post-thyroidectomy

NCT02946918
View directory record Official record
Conditions
Thyroid Cancer, Postsurgical Hypothyroidism
Interventions
Levothyroxine
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Dec 1, 2020 · Synced Oct 19, 2026, 2:04 PM EDT
Completed Phase 2 Interventional

A Study Evaluation the Safety and Efficacy of Hormone Replacement Therapy With North Star Compared to Levothyroxine in Patients With Primary Hypothyroidism

NCT05712421
View directory record Official record
Conditions
Hypothyroidism
Interventions
North Star, Levothyroxine
Drug
Lead sponsor
Neuvosyn Laboratories, LLC
Industry
Eligibility
18 Years to 75 Years
Enrollment
303 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
31
States / cities
Birmingham, Alabama • Canoga Park, California • Greenbrae, California + 23 more
Source: ClinicalTrials.gov public record
Updated Feb 18, 2026 · Synced Oct 19, 2026, 2:04 PM EDT
Completed Phase 2 Interventional Results available

A Phase II Trial of Valproic Acid in Patients With Advanced Thyroid Cancers of Follicular Cell Origin

NCT01182285
View directory record Official record
Conditions
Thyroid Neoplasm
Interventions
Valproic Acid, Liothyronine Sodium
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 100 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 16, 2018 · Synced Oct 19, 2026, 2:04 PM EDT
Recruiting Not applicable Interventional

A Randomized Controlled Trial of Thyroid Hormone Supplementation in Hemodialysis Patients

NCT03977207
View directory record Official record
Conditions
Thyroid; Functional Disturbance, Hypothyroidism, Hemodialysis
Interventions
Levothyroxine Sodium, Placebos
Drug
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 75 Years
Enrollment
336 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Sep 8, 2025 · Synced Oct 19, 2026, 2:04 PM EDT
Withdrawn Phase 4 Interventional

Levothyroxine in Pregnant SLE Patients

NCT01276782
View directory record Official record
Conditions
Systemic Lupus Erythematosus
Interventions
Levothyroxine
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 45 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 10, 2015 · Synced Oct 19, 2026, 2:04 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of Sustained-Release Liothyronine Sodium (T3) in Healthy Subjects

NCT01581463
View directory record Official record
Conditions
Healthy
Interventions
Liothyronine, Sodium
Drug
Lead sponsor
Ipe, LLC
Industry
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2012
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Aug 6, 2012 · Synced Oct 19, 2026, 2:04 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Hypothyroidism Treated With Calcitonin

NCT03342001
View directory record Official record
Conditions
Hypothyroidism
Interventions
Calcitonin
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 88 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 21, 2022 · Synced Oct 19, 2026, 2:04 PM EDT
Completed Phase 2Phase 3 Interventional

Supraphysiological Doses of Levothyroxine as Adjunctive Therapy in Bipolar Depression

NCT01528839
View directory record Official record
Conditions
Bipolar Disorder
Interventions
L-Thyroxine, Placebo
Drug
Lead sponsor
Charite University, Berlin, Germany
Other
Eligibility
18 Years to 65 Years
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 8, 2012 · Synced Oct 19, 2026, 2:04 PM EDT
Not yet recruiting Phase 2 Interventional

T4/T3 Therapy in Hypothyroidism

NCT07424183
View directory record Official record
Conditions
Hypothyroidism Primary
Interventions
Liothyronine (L-T3), Levothyroxine Sodium (LT4) Tablets, Liothyronine (LT3) placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Oct 19, 2026, 2:04 PM EDT
Completed No phase listed Observational

Acceleration and Relapse Prevention With Triiodothyronine (T3) as an Adjunct to Electroconvulsive Therapy (ECT)

NCT01299337
View directory record Official record
Conditions
Depression
Interventions
T3
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 64 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 11, 2012 · Synced Oct 19, 2026, 2:04 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Evaluate the Effect of IW-3718 on the Pharmacokinetics of Oral Contraceptive, Levothyroxine, Glyburide, and Digoxin in Healthy Adult Volunteers

NCT03856970
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Microgestin®, Levothyroxine, Glyburide, Digoxin, IW-3718
Drug
Lead sponsor
Ironwood Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jul 29, 2019 · Synced Oct 19, 2026, 2:04 PM EDT
Completed Phase 2 Interventional Results available

Sunitinib or Cediranib for Alveolar Soft Part Sarcoma

NCT01391962
View directory record Official record
Conditions
Sarcoma, Alveolar Soft Part
Interventions
Cediranib, Sunitinib, Prochlorperazine, Promethazine, Benzodiazepine, Filgrastim, Sargramostim, Lomotil, Loperamide, Vitamin B6, Aquaphor, Acetaminophen, Levothyroxine, Warfarin
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
16 Years to 120 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2026
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 2, 2026 · Synced Oct 19, 2026, 2:04 PM EDT
Withdrawn Phase 4 Interventional

Mean Percentage of Levothyroxine Dosage Increase in Patients With Hypothyroidism Started on Enteral Feeding

NCT02577367
View directory record Official record
Conditions
Hypothyroidism
Interventions
Levothyroxine
Drug
Lead sponsor
Jocelyne Karam
Other
Eligibility
18 Years to 100 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Sep 22, 2021 · Synced Oct 19, 2026, 2:04 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Thyroid Therapy for Mild Thyroid Deficiency in Pregnancy

NCT00388297
View directory record Official record
Conditions
Subclinical Hypothyroidism, Hypothyroxinemia, Pregnancy
Interventions
Levothyroxine, Placebo for Levothyroxine
Drug
Lead sponsor
The George Washington University Biostatistics Center
Other
Eligibility
Female only
Enrollment
1,203 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2015
U.S. locations
14
States / cities
Birmingham, Alabama • Chicago, Illinois • Detroit, Michigan + 11 more
Source: ClinicalTrials.gov public record
Updated Feb 21, 2019 · Synced Oct 19, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Biochemical Brain Changes Correlated With The Antidepressant Effect Of Thyroid Hormones

NCT00562367
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Cytomel (liothyronine)
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2004
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 22, 2007 · Synced Oct 19, 2026, 2:04 PM EDT
Completed Phase 4 Interventional Results available

Levothyroxine Sodium in Thyroidectomized Patients Taking Proton Pump Inhibitors

NCT03094416
View directory record Official record
Conditions
Hypothyroidism;Postablative
Interventions
levothyroxine sodium capsule, Proton pump inhibitor (PPI), Levothyroxine Sodium (LT4) Tablets
Drug
Lead sponsor
IBSA Institut Biochimique SA
Industry
Eligibility
18 Years to 65 Years
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
9
States / cities
La Jolla, California • Ventura, California • Washington D.C., District of Columbia + 6 more
Source: ClinicalTrials.gov public record
Updated Apr 5, 2022 · Synced Oct 19, 2026, 2:04 PM EDT
Completed Not applicable Interventional Results available

Thyroid Hormone Dose Adjustment in Pregnancy

NCT00230802
View directory record Official record
Conditions
Pregnancy, Hypothyroidism
Interventions
Anticipatory dose increase of levothyroxine, levothyroxine
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
Female only
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 23, 2016 · Synced Oct 19, 2026, 2:04 PM EDT
Withdrawn Not applicable Interventional

The Effect of Coffee on the Absorption of Thyroid Hormone in Patients With Thyroid Carcinoma

NCT01707056
View directory record Official record
Conditions
Thyroid Carcinoma, Hypothyroidism
Interventions
Black Coffee, Coffee with Milk, Black Tea, Water
Other
Lead sponsor
Medstar Health Research Institute
Other
Eligibility
18 Years to 60 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
3
States / cities
Washington D.C., District of Columbia • Leonardtown, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 17, 2021 · Synced Oct 19, 2026, 2:04 PM EDT
Not listed No phase listed Observational

The Effect of Thyroid Hormone Levels in Pregnant Women on the Intelligence Quotient (IQ) of Their Children

NCT00147433
View directory record Official record
Conditions
Child Development Disorders, Pregnancy, Subclinical Hypothyroidism
Interventions
Not listed
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
0 Years and older · Female only
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Scarborough, Maine
Source: ClinicalTrials.gov public record
Updated Mar 31, 2006 · Synced Oct 19, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Acute Pediatric Fracture Analgesia Study

NCT00520442
View directory record Official record
Conditions
Fracture
Interventions
ibuprofen, acetamin w codeine
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
4 Years to 18 Years
Enrollment
335 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2007
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 7, 2008 · Synced Oct 19, 2026, 2:04 PM EDT
Completed No phase listed Observational

Improving White Matter Integrity With Thyroid Hormone

NCT04098991
View directory record Official record
Conditions
Hypothyroidism
Interventions
Levothyroxine
Drug
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
21 Years to 60 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 10, 2020 · Synced Oct 19, 2026, 2:04 PM EDT