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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: hydrochlorothiazide Clear all
Completed No phase listed Observational Results available

Data Analysis for Drug Repurposing for Effective Alzheimer's Medicines (DREAM)- Dihydropyridine Calcium Channel Blockers Versus Hydrochlorothiazide

NCT05125224
View directory record Official record
Conditions
Hypertension
Interventions
Dihydropyridine calcium channel blocker, Hydrochlorothiazide
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
65 Years and older
Enrollment
163,720 participants
Timeline
2021 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 5, 2025 · Synced Sep 23, 2026, 11:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bioequivalence Study of Benazepril HCl / Hydrochlorothiazide 20 mg/ 25 mg Tablets Under Fed Conditions

NCT00778674
View directory record Official record
Conditions
Healthy
Interventions
Benazepril HCl/ Hydrochlorothiazide 20 mg/ 25 mg Tablets
Drug
Lead sponsor
Ranbaxy Laboratories Limited
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 22, 2008 · Synced Sep 23, 2026, 11:55 PM EDT
Completed Phase 4 Interventional Results available

The Effects of Renin Inhibition on Fibrinolytic Balance and Endothelial Function

NCT03115853
View directory record Official record
Conditions
High Blood Pressure
Interventions
Aliskiren 150 mg, Placebo, HCTZ, Aliskiren 300 mg
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 24, 2017 · Synced Sep 23, 2026, 11:55 PM EDT
Completed Phase 4 Interventional Results available

18 Week Study Evaluating Safety and Efficacy of Olmesartan, Amlodipine, and Hydrochlorothiazide, in Type 2 Diabetics

NCT00654745
View directory record Official record
Conditions
Type 2 Diabetes, Hypertension
Interventions
Amlodipine, amlodipine / olmesartan medoxomil combination, Hydrochlorothiazide
Drug
Lead sponsor
Daiichi Sankyo
Industry
Eligibility
18 Years to 80 Years
Enrollment
207 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
21
States / cities
Los Angeles, California • Sylmar, California • Tustin, California + 18 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2010 · Synced Sep 23, 2026, 11:55 PM EDT
Completed Phase 4 Interventional Results available

N-of-1 Trials In Children With Hypertension

NCT03461003
View directory record Official record
Conditions
Pediatric Hypertension
Interventions
NICHE method, Usual care, Amlodipine, Lisinopril, Hydrochlorothiazide, Losartan
Other · Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
10 Years to 22 Years
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 8, 2022 · Synced Sep 23, 2026, 11:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Food Study of Metoprolol Tartrate/Hydrochlorothiazide Tablets 100/50 mg to Lopressor HCT® Tablets 100/50 mg

NCT00649233
View directory record Official record
Conditions
Healthy
Interventions
Metoprolol Tartrate/Hydrochlorothiazide Tablets 100/50 mg, Lopressor HCT® Tablets 100/50 mg
Drug
Lead sponsor
Mylan Pharmaceuticals Inc
Industry
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Apr 23, 2024 · Synced Sep 23, 2026, 11:55 PM 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 23, 2026, 11:55 PM EDT
Completed Phase 2 Interventional Results available

Effects of Dapagliflozin on Kidney Function (Glomerular Filtration Rate) in Subjects With Type 2 Diabetes

NCT00976495
View directory record Official record
Conditions
Type 2 Diabetes Mellitus
Interventions
Dapagliflozin, Placebo, Hydrochlorothiazide
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 70 Years
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
9
States / cities
Anaheim, California • Lomita, California • Miami, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Mar 7, 2017 · Synced Sep 23, 2026, 11:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Fasting Study of Olmesartan Medoxomil and Hydrochlorothiazide Tablets 40 mg/25 mg and Benicar HCT® Tablets 40 mg/25 mg

NCT01020214
View directory record Official record
Conditions
Healthy
Interventions
Olmesartan Medoxomil and Hydrochlorothiazide Tablets 40 mg/25 mg, Benicar HCT® Tablets 40 mg/25 mg
Drug
Lead sponsor
Mylan Pharmaceuticals Inc
Industry
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Apr 22, 2024 · Synced Sep 23, 2026, 11:55 PM EDT
Terminated Early Phase 1 Interventional Accepts healthy volunteers Results available

Mechanisms of Ramipril Reduction in the Onset of Type 2 Diabetes

NCT00574834
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
Ramipril, HCTZ-hydrochlorothiazide, Ramipril+HCTZ
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
20 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2014
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 11, 2019 · Synced Sep 23, 2026, 11:55 PM EDT
Terminated Phase 3 Interventional Results available

Study to Evaluate Symptoms in Patients Treated With Nebivolol or Metoprolol Extended-release (ER) for Hypertension

NCT00547300
View directory record Official record
Conditions
Hypertension
Interventions
Metoprolol ER, Nebivolol
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
18 Years to 80 Years
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
24
States / cities
Birmingham, Alabama • Beverly Hills, California • Encinitas, California + 21 more
Source: ClinicalTrials.gov public record
Updated May 20, 2019 · Synced Sep 23, 2026, 11:55 PM EDT
Completed Phase 4 Interventional Results available

Oral Combined Hydrochlorothiazide/Lisinopril Versus Oral Nifedipine for Postpartum Hypertension

NCT05049616
View directory record Official record
Conditions
Hypertension in Pregnancy, Postpartum Preeclampsia
Interventions
ACE Inhibitors and Diuretics, NIFEdipine ER
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older · Female only
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Sep 23, 2026, 11:55 PM EDT
Completed Phase 1 Interventional

Treatment of Supine Hypertension in Autonomic Failure

NCT00223717
View directory record Official record
Conditions
Hypertension
Interventions
Clonidine, Nitroglycerin transdermal, Dipyridamole/ Aspirin (Aggrenox), Desmopressin (DDAVP), Sildenafil, Nifedipine, Hydralazine, Hydrochlorothiazide, Placebo, Bosentan, Diltiazem, Eplerenone, guanfacine, L-arginine, captopril, carbidopa, losartan, metoprolol tartrate, nebivolol hydrochloride, prazosin hydrochloride, tamsulosin hydrochloride, Head-up tilt., aliskiren, Local heat stress
Drug · Dietary Supplement · Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 80 Years
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 12, 2017 · Synced Sep 23, 2026, 11:55 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Sympathetic Regulation of Large Artery Stiffness in Humans With ISH

NCT04423627
View directory record Official record
Conditions
Hypertension, Systolic, Stiffness, Aortic
Interventions
Clonidine, Hydrochlorothiazide, Placebo
Drug
Lead sponsor
University of Iowa
Other
Eligibility
60 Years to 85 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
2
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Aug 7, 2025 · Synced Sep 23, 2026, 11:55 PM EDT
Completed Not applicable Interventional Results available

A Pilot Study of Plasma Renin Activity Guided vs Generic Combination Therapy for Hypertension

NCT01658657
View directory record Official record
Conditions
Hypertension, Plasma Renin Activity
Interventions
Hydrochlorothiazide, Lisinopril, Amlodipine, metoprolol, lisinopril/hydrochlorothiazide
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 26, 2015 · Synced Sep 23, 2026, 11:55 PM EDT
Completed Not applicable Interventional

Aldosterone and Vascular Disease in Diabetes Mellitus

NCT00214825
View directory record Official record
Conditions
Diabetes Mellitus, Endothelial Dysfunction, Albuminuria
Interventions
eplerenone, Hydrochlorothiazide
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
21 Years to 64 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 2, 2008 · Synced Sep 23, 2026, 11:55 PM EDT
Completed Phase 3 Interventional Results available

Action to Control Cardiovascular Risk in Diabetes (ACCORD)

NCT00000620
View directory record Official record
Conditions
Atherosclerosis, Cardiovascular Diseases, Hypercholesterolemia, Hypertension, Diabetes Mellitus, Type 2, Diabetes Mellitus, Coronary Disease
Interventions
Anti-hyperglycemic Agents, Anti-hypertensive Agents, Blinded fenofibrate or placebo plus simvastatin
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
40 Years to 79 Years
Enrollment
10,251 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2012
U.S. locations
6
States / cities
Minneapolis, Minnesota • New York, New York • Winston-Salem, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated Nov 21, 2016 · Synced Sep 23, 2026, 11:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study to Determine the Effects of Nebivolol and Hydrochlorothiazide in African Americans With Hypertension

NCT00999752
View directory record Official record
Conditions
Hypertension
Interventions
Nebivolol, Hydrochlorothiazide
Drug
Lead sponsor
InVasc Therapeutics, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Tucker, Georgia
Source: ClinicalTrials.gov public record
Updated May 4, 2011 · Synced Sep 23, 2026, 11:55 PM EDT
Completed Not applicable Interventional

Hypertensive Ambulatory Trial to Compare the Efficacy of HCTZ and Lisinopril

NCT01258764
View directory record Official record
Conditions
Hypertension, Grade 1, Hypertension Treatment, N of 1 Study Design, Hypertension
Interventions
Lisinopril, Hydrochlorothiazide
Drug
Lead sponsor
Scripps Translational Science Institute
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated May 19, 2015 · Synced Sep 23, 2026, 11:55 PM 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 23, 2026, 11:55 PM EDT
Completed Phase 4 Interventional Results available

Blood Pressure Lowering of Aliskiren HCTZ Compared to HCTZ in Stage 2 Systolic Hypertension in Older Population

NCT00760266
View directory record Official record
Conditions
Hypertension
Interventions
Aliskiren, Hydrochlorothiazide
Drug
Lead sponsor
Novartis
Industry
Eligibility
55 Years and older
Enrollment
451 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 3, 2011 · Synced Sep 23, 2026, 11:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Fasting Study of Benazepril HCl and Hydrochlorothiazide Tablets 20 mg/25 mg to Lotensin HCT® Tablets 20 mg/25 mg

NCT00649597
View directory record Official record
Conditions
Healthy
Interventions
Benazepril HCl and Hydrochlorothiazide Tablets 20 mg/25 mg, Lotensin HCT® Tablets 20 mg/25 mg
Drug
Lead sponsor
Mylan Pharmaceuticals Inc
Industry
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Apr 23, 2024 · Synced Sep 23, 2026, 11:55 PM EDT
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 23, 2026, 11:55 PM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Changes in Endothelial Function and Biomarkers in African Americans (AA) With Metabolic Syndrome

NCT01271374
View directory record Official record
Conditions
Hypertension
Interventions
amlodipine and olmesartan, losartan and HCTZ
Drug
Lead sponsor
InVasc Therapeutics, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Tucker, Georgia
Source: ClinicalTrials.gov public record
Updated May 4, 2011 · Synced Sep 23, 2026, 11:55 PM EDT