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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Chlorothiazide Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

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

NCT00649038
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
24 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 10, 2026, 9:48 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Drug to Drug Interaction Study of Sotagliflozin With Hydrochlorothiazide

NCT03387657
View directory record Official record
Conditions
Type 2 Diabetes Mellitus
Interventions
Sotagliflozin (SAR439954), Hydrochlorothiazide
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years to 55 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Apr 24, 2022 · Synced Sep 10, 2026, 9:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Crossover Bioequivalence Study of Irbesartan Hydrochlorothiazide 300/25 mg Tablets Under Fed Conditions

NCT01712126
View directory record Official record
Conditions
Hypertension
Interventions
Irbesartan and Hydrochlorothiazide, Avalide
Drug
Lead sponsor
Roxane Laboratories
Industry
Eligibility
18 Years to 45 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jan 22, 2018 · Synced Sep 10, 2026, 9:48 PM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Aliskiren/Amlodipine/Hydrochlorothiazide in Patients With Moderate-severe Hypertension

NCT00765674
View directory record Official record
Conditions
Hypertension
Interventions
Aliskiren, Amlodipine, Hydrochlorothiazide (HCTZ), Placebo
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
1,191 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated May 8, 2011 · Synced Sep 10, 2026, 9:48 PM EDT
Completed Phase 4 Interventional

Randomized, Double-Blind, Placebo-Controlled, Forced-Titration, Comparing Telmisartan vs Valsartan. Taken Orally for Eight Weeks in Patients With Stage 1 and Stage 2 Hypertension

NCT00168779
View directory record Official record
Conditions
Hypertension
Interventions
telmisartan 80 mg / hydrochlorothiazide 25 mg, valsartan 160 mg / hydrochlorothiazide 25 mg, placebo
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years and older
Enrollment
1,185 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
113
States / cities
Athens, Alabama • Birmingham, Alabama • Huntsville, Alabama + 90 more
Source: ClinicalTrials.gov public record
Updated Dec 27, 2017 · Synced Sep 10, 2026, 9:48 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

8-week Study to Evaluate Safety and Efficacy of Various Combinations of Valsartan, HCTZ, and Amlodipine in Patients With Moderate to Severe Hypertension

NCT00327587
View directory record Official record
Conditions
Hypertension
Interventions
Valsartan + amlodipine, Valsartan + HCTZ, Amlodipine + HCTZ, Valsartan + amlodipine + HCTZ
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years to 85 Years
Enrollment
2,279 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 7, 2011 · Synced Sep 10, 2026, 9:48 PM EDT
Withdrawn Phase 4 Interventional

Combination Diuretic Therapy for Acute Decompensated Heart Failure

NCT05840536
View directory record Official record
Conditions
Acute Decompensated Heart Failure
Interventions
Furosemide plus Chlorothiazide, Furosemide
Drug
Lead sponsor
Ochsner Health System
Other
Eligibility
18 Years to 99 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated May 2, 2023 · Synced Sep 10, 2026, 9:48 PM EDT
Completed Phase 4 Interventional

An Examination of the Safety and Blood Pressure Lowering Effect of Increasing Doses of Benicar® and Benicar® HCT in Patients With Hypertension

NCT00185068
View directory record Official record
Conditions
Hypertension
Interventions
Olmesartan medoxomil, Olmesartan medoxomil/hydrochlorothiazide, Hydrochlorothiazide
Drug
Lead sponsor
Daiichi Sankyo
Industry
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004
U.S. locations
16
States / cities
Fort Lauderdale, California • Long Beach, California • Roseville, California + 13 more
Source: ClinicalTrials.gov public record
Updated Sep 15, 2005 · Synced Sep 10, 2026, 9:48 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 10, 2026, 9:48 PM EDT
Recruiting No phase listed Observational

Pharmacokinetics and Safety of Commonly Used Drugs in Lactating Women and Breastfed Infants

NCT03511118
View directory record Official record
Conditions
Lactating Women on Select DOI, Breastfed Infants of Mothers on Select DOI
Interventions
Tranexamic acid (TXA), labetalol, metformin, nifedipine, clindamycin, oxycodone, azithromycin, escitalopram, sertraline, ondansetron, Ciprofloxacin, Doxycycline, Levofloxacin, Methylphenidate, Sumatriptan, Citalopram, Cyclobenzaprine, Furosemide, Gabapentin, Hydrochlorothiazide, Hydroxyurea, Rosuvastatin, Topiramate, Trazodone, Valganciclovir, Venlafaxine, Verapamil, Remdesivir, Anakinra, Tocilizumab, Fluvoxamine, Amoxicillin, Bupropion, Duloxetine, Hydrocodone, Levetiracetam, Paroxetine, Buprenorphine
Drug
Lead sponsor
Duke University
Other
Eligibility
Not listed
Enrollment
1,600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2028
U.S. locations
20
States / cities
La Jolla, California • Loma Linda, California • Chicago, Illinois + 15 more
Source: ClinicalTrials.gov public record
Updated Jul 28, 2026 · Synced Sep 10, 2026, 9:48 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 10, 2026, 9:48 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Anxiety-mediated Impairments in Large Elastic Artery Function and the Autonomic Nervous System

NCT03109795
View directory record Official record
Conditions
Anxiety, Hypertension
Interventions
Clonidine Pill, Hydrochlorothiazide
Drug
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 79 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2023
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 28, 2024 · Synced Sep 10, 2026, 9:48 PM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of the Combination Aliskiren (300 mg) and Hydrochlorothiazide (25mg) to Aliskiren (300mg) Monotherapy in Patients With Staged II Hypertension

NCT00705575
View directory record Official record
Conditions
Hypertension
Interventions
Aliskiren/hydrochlorothiazide (HCTZ) (300/25 mg), Aliskiren (300 mg)
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
688 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 May 29, 2011 · Synced Sep 10, 2026, 9:48 PM EDT
Completed Phase 4 Interventional

Vascular Improvement With Olmesartan Medoxomil Study

NCT00772499
View directory record Official record
Conditions
Hypertension
Interventions
olmesartan medoxomil + hydrochlorothiazide + amlodipine + hydralazine if necessary to control blood pressure, atenolol+ hydrochlorothiazide + amlodipine + hydralazine if necessary to control blood pressure
Drug
Lead sponsor
Daiichi Sankyo
Industry
Eligibility
18 Years to 75 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2005
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 14, 2008 · Synced Sep 10, 2026, 9:48 PM EDT
Completed Phase 2 Interventional Results available

The Antihypertensives and Vascular, Endothelial and Cognitive Function Trial

NCT00605072
View directory record Official record
Conditions
Cognitive Impairment, Hypertension, Aging
Interventions
candesartan, lisinopril, hydrochlorothiazide, nifedipine, long acting, metoprolol, long-acting
Drug
Lead sponsor
University of Southern California
Other
Eligibility
60 Years and older
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
2
States / cities
Los Angeles, California • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 14, 2013 · Synced Sep 10, 2026, 9:48 PM EDT
Completed Phase 4 Interventional Results available

Valsartan Intensified Primary Care Reduction of Blood Pressure Study

NCT00902304
View directory record Official record
Conditions
Hypertension
Interventions
Valsartan and hydrochlorothiazide (HCTZ) - monotherapy, Valsartan and amlodipine, Usual care, Valsartan, Valsartan and hydrochlorothiazide (HCTZ) - combination arm
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
2,337 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Dec 3, 2012 · Synced Sep 10, 2026, 9:48 PM EDT
Completed Early Phase 1 Interventional

N-of-1 Trials for Blood Pressure Medications in Adults

NCT02744456
View directory record Official record
Conditions
Hypertension, High Blood Pressure
Interventions
Losartan, Amlodipine, Hydrochlorothiazide
Drug
Lead sponsor
Columbia University
Other
Eligibility
21 Years to 80 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 25, 2019 · Synced Sep 10, 2026, 9:48 PM EDT
Terminated Phase 3 Interventional Results available

Postpartum Management of Hypertension in Pregnancy With Hydrochlorothiazide

NCT03298802
View directory record Official record
Conditions
Pre-Eclampsia, Gestational Hypertension, Superimposed Pre-Eclampsia, Hypertension, Pregnancy-Induced, Postpartum Pregnancy-Induced Hypertension, Postpartum Preeclampsia
Interventions
Hydrochlorothiazide 50mg Tablet, Placebo Tablet
Drug
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
453 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2025
U.S. locations
2
States / cities
Austin, Texas • Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Sep 10, 2026, 9:48 PM EDT
Withdrawn Phase 4 Interventional

Chlorthalidone Compared to Hydrochlorothiazide on Endothelial Function

NCT01822860
View directory record Official record
Conditions
Hypertension
Interventions
Chlorthalidone 12.5 mg, Hydrochlorothiazide 25 mg, Placebo
Drug
Lead sponsor
Creighton University
Other
Eligibility
19 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Mar 24, 2015 · Synced Sep 10, 2026, 9:48 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

A 16 Week Study to Evaluate the Effect on Insulin Sensitivity of Valsartan (320 mg) and Hydrochlorothiazide (25 mg) Combined and Alone, in Patients With Metabolic Syndrome

NCT00170937
View directory record Official record
Conditions
METABOLIC SYNDROME, HYPERTENSION, PRE-HYPERTENSION
Interventions
valsartan plus hydrochlorothiazide
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years to 75 Years
Enrollment
507 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2004
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 17, 2016 · Synced Sep 10, 2026, 9:48 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 10, 2026, 9:48 PM EDT
Completed Phase 4 Interventional Results available

Aliskiren/Amlodipine/Hydrochlorothiazide (HCTZ) Versus Aliskiren/Amlodipine in US Minority Patients With Stage II Systolic Hypertension

NCT00942994
View directory record Official record
Conditions
Hypertension
Interventions
Aliskiren/Amlodipine, Aliskiren/Amlodipine and Hydrochlorothiazide (HCTZ)
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
412 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2009
U.S. locations
5
States / cities
Little Rock, Arkansas • South Miami, Florida • Mattapan, Massachusetts + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 7, 2011 · Synced Sep 10, 2026, 9:48 PM EDT
Completed Phase 4 Interventional Results available

Black Education and Treatment of Hypertension (BEAT HTN)

NCT00661895
View directory record Official record
Conditions
Hypertension
Interventions
Hydrochlorothiazide, Lisinopril, Lisinopril and Hydrochlorothiazide, Nifedipine XL, Metoprolol tartrate, Atenolol, Valsartan, Doxazosin, Clonidine, Hydralazine, Metoprolol succinate, Amlodipine
Drug
Lead sponsor
Creighton University
Other
Eligibility
25 Years to 80 Years
Enrollment
99 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Dec 3, 2012 · Synced Sep 10, 2026, 9:48 PM EDT
Completed Phase 4 Interventional Results available

Pharmacogenomic Evaluation of Antihypertensive Responses

NCT00246519
View directory record Official record
Conditions
Hypertension
Interventions
Hydrochlorothiazide, Atenolol
Drug
Lead sponsor
University of Florida
Other
Eligibility
17 Years to 65 Years
Enrollment
1,701 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
3
States / cities
Gainesville, Florida • Atlanta, Georgia • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 6, 2018 · Synced Sep 10, 2026, 9:48 PM EDT