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Showing 1–19 of 19 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: Chlorthalidone 25 mg daily Clear all
Not listed Phase 4 Interventional Accepts healthy volunteers

Chlorthalidone and HCTZ Impacts on Platelet Activation

NCT02100462
View directory record Official record
Conditions
Hypertension
Interventions
Chlorthalidone 12.5 mg, Hydrochlorothiazide 25 mg, Aspirin 81 mg
Drug
Lead sponsor
Creighton University
Other
Eligibility
19 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Dec 13, 2015 · Synced Sep 29, 2026, 10:57 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Azilsartan Medoxomil and Chlorthalidone Compared to Olmesartan Medoxomil and Hydrochlorothiazide in Participants With Moderate to Severe Hypertension.

NCT01033071
View directory record Official record
Conditions
Essential Hypertension
Interventions
Azilsartan medoxomil and chlorthalidone, Olmesartan medoxomil and hydrochlorothiazide
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
1,071 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
84
States / cities
Gulf Shores, Alabama • Litchfield Park, Arizona • Mesa, Arizona + 81 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2012 · Synced Sep 29, 2026, 10:57 AM EDT
Completed Phase 4 Interventional Results available

Effects of Thiazide Diuretics on Sympathetic Nervous System in Hypertension

NCT00353652
View directory record Official record
Conditions
Hypertension
Interventions
Study#1: chlorthalidone (CTD), titrated dose, Study #1: spironolactone (SP), titrated dose, Study# 2 chlorthalidone (CTD), fixed dose, Study# 2 spironolactone (SP), fixed dose, Study# 2 irbsesartan (IR), fixed dose
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
166 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2013
U.S. locations
2
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 5, 2019 · Synced Sep 29, 2026, 10:57 AM EDT
Completed Phase 3 Interventional Results available

Diuretic Comparison Project

NCT02185417
View directory record Official record
Conditions
Hypertension
Interventions
Hydrochlorothiazide (HCTZ), Chlorthalidone (CTD)
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
65 Years and older
Enrollment
20,723 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
69
States / cities
Birmingham, Alabama • Anchorage, Alaska • Fayetteville, Arkansas + 64 more
Source: ClinicalTrials.gov public record
Updated May 21, 2024 · Synced Sep 29, 2026, 10:57 AM EDT
Completed Phase 3 Interventional Results available

A Safety and Tolerability Study of Azilsartan Medoxomil in Participants With Essential Hypertension

NCT00696384
View directory record Official record
Conditions
Hypertension
Interventions
Azilsartan medoxomil, Azilsartan medoxomil, with or without chlorthalidone and other non-angiotensin II receptor blocker antihypertensive medications., Placebo
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
418 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
33
States / cities
Huntsville, Alabama • Chandler, Arizona • Mesa, Arizona + 30 more
Source: ClinicalTrials.gov public record
Updated Jan 3, 2012 · Synced Sep 29, 2026, 10:57 AM EDT
Recruiting Phase 2 Interventional

Cardiac Effects of Mineralocorticoid Receptor Antagonism After Preeclampsia

NCT07238400
View directory record Official record
Conditions
Hypertension
Interventions
Eplerenone 100 mg daily, Chlorthalidone 25 mg daily, Potassium Placebo, Potassium Chloride
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Sep 29, 2026, 10:57 AM EDT
Terminated Phase 2 Interventional Results available

Treatment of Resistant Hypertension by Prevention of T-Cell Co-Stimulation

NCT02232880
View directory record Official record
Conditions
Hypertension
Interventions
Abatacept, Placebo
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 6, 2017 · Synced Sep 29, 2026, 10:57 AM EDT
Completed Phase 3 Interventional Results available

One-Year Safety and Tolerability Study of Azilsartan Medoxomil in Participants With Essential Hypertension

NCT00695955
View directory record Official record
Conditions
Hypertension
Interventions
Azilsartan medoxomil with or without add-on chlorthalidone, Azilsartan medoxomil with or without add-on hydrochlorothiazide
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
669 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
39
States / cities
Ozark, Alabama • Tallassee, Alabama • Long Beach, California + 36 more
Source: ClinicalTrials.gov public record
Updated Apr 18, 2011 · Synced Sep 29, 2026, 10:57 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Tissue Sodium in Pre-hypertensive Patients

NCT02236520
View directory record Official record
Conditions
Hypertension
Interventions
Spironolactone, Chlorthalidone, Diet, Placebo
Drug · Dietary Supplement
Lead sponsor
Vanderbilt University
Other
Eligibility
50 Years to 80 Years
Enrollment
71 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 21, 2019 · Synced Sep 29, 2026, 10:57 AM EDT
Not listed Phase 2 Interventional

Spironolactone in CKD Enabled by Chlorthalidone: PILOT

NCT05222191
View directory record Official record
Conditions
Renal Insufficiency, Chronic Hypertension
Interventions
Spironolactone, Chlorthalidone, Placebo
Drug
Lead sponsor
Indiana Institute for Medical Research
Other
Eligibility
19 Years to 110 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 13, 2023 · Synced Sep 29, 2026, 10:57 AM EDT
Recruiting Not applicable Interventional

OPtimizing Technology to Improve Medication Adherence and BP Control (OPTIMA-BP)

NCT05293756
View directory record Official record
Conditions
Hypertension, Self-Management, Technology, Quality of Life
Interventions
OPTIMA-BP Intervention
Behavioral
Lead sponsor
Case Western Reserve University
Other
Eligibility
50 Years and older
Enrollment
208 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Sep 29, 2026, 10:57 AM EDT
Completed Early Phase 1 Interventional

Effects of Antihypertensive Drug Treatment on Brain Blood Flow, Cognition, and Regulation of Nervous System in Older Adults With Hypertension.

NCT06287580
View directory record Official record
Conditions
Essential Hypertension, Older Adults
Interventions
chlorthalidone, Placebo
Drug · Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
60 Years to 85 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Sep 29, 2026, 10:57 AM EDT
Withdrawn Phase 4 Interventional

The Management of Resistant Hypertension in Kidney Transplant Patients Using Chlorthalidone

NCT02030314
View directory record Official record
Conditions
Resistant Hypertension in Kidney Transplant Patients
Interventions
Chlorthalidone
Drug
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 14, 2017 · Synced Sep 29, 2026, 10:57 AM EDT
Completed Phase 3 Interventional Results available

Uric Acid and Hypertension in African Americans

NCT00241839
View directory record Official record
Conditions
Cardiovascular Diseases, Heart Diseases, Hypertension
Interventions
Allopurinol, Placebo, Chlorthalidone, Potassium chloride
Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 65 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jul 25, 2013 · Synced Sep 29, 2026, 10:57 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Azilsartan Medoxomil Combined With Chlorthalidone in Participants With Moderate to Severe Hypertension

NCT00847626
View directory record Official record
Conditions
Hypertension
Interventions
Azilsartan medoxomil and chlorthalidone, Chlorthalidone, Azilsartan medoxomil
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
1,711 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
84
States / cities
Birmingham, Alabama • Columbiana, Alabama • Tuscaloosa, Alabama + 81 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2012 · Synced Sep 29, 2026, 10:57 AM EDT
Recruiting Phase 4 Interventional

CaOx Stone Prevention

NCT07225764
View directory record Official record
Conditions
Kidney Stones
Interventions
Chlorthalidone, Low oxalate diet
Drug · Behavioral
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 29, 2026, 10:57 AM EDT
Completed Phase 4 Interventional Results available

Pharmacogenomic Evaluation of Antihypertensive Responses 2

NCT01203852
View directory record Official record
Conditions
Hypertension
Interventions
Metoprolol, Chlorthalidone
Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 65 Years
Enrollment
839 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
3
States / cities
Gainesville, Florida • Atlanta, Georgia • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 5, 2018 · Synced Sep 29, 2026, 10:57 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Azilsartan Medoxomil Co-Administered With Chlorthalidone in Participants With Essential Hypertension

NCT00591773
View directory record Official record
Conditions
Hypertension
Interventions
Azilsartan medoxomil and chlorthalidone, Chlorthalidone
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
551 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
46
States / cities
Huntsville, Alabama • Montgomery, Alabama • Buena Park, California + 43 more
Source: ClinicalTrials.gov public record
Updated Apr 18, 2011 · Synced Sep 29, 2026, 10:57 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Azilsartan Medoxomil Plus Chlorthalidone in Participants With Moderate to Severe Hypertension

NCT00846365
View directory record Official record
Conditions
Essential Hypertension
Interventions
Azilsartan medoxomil and chlorthalidone, Olmesartan medoxomil-hydrochlorothiazide
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
1,085 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
70
States / cities
Birmingham, Alabama • Haleyville, Alabama • Hueytown, Alabama + 67 more
Source: ClinicalTrials.gov public record
Updated Mar 12, 2012 · Synced Sep 29, 2026, 10:57 AM EDT