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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 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 25, 2026, 1:26 AM 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 25, 2026, 1:26 AM EDT
Completed Phase 2 Interventional

Novel Evaluation With QGC001 in Hypertensive Overweight Patients of Multiple Ethnic Origins

NCT03198793
View directory record Official record
Conditions
Hypertension
Interventions
QGC001
Drug
Lead sponsor
Quantum Genomics SA
Industry
Eligibility
18 Years and older
Enrollment
256 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Port Orange, Florida
Source: ClinicalTrials.gov public record
Updated Dec 10, 2018 · Synced Sep 25, 2026, 1:26 AM 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 25, 2026, 1:26 AM EDT
Completed Phase 3 Interventional

A Clinical Study to Evaluate Safety & Efficacy of the Combination of Aliskiren, Valsartan & Hydrochlorothiazide in Diabetic Hypertensive Nonresponder Patients

NCT00219102
View directory record Official record
Conditions
Hypertension, Diabetes
Interventions
aliskiren
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
336 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Salisbury, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 10, 2020 · Synced Sep 25, 2026, 1:26 AM EDT
Completed Phase 3 Interventional

A Safety and Efficacy Trial of the Combination of Aliskiren / Hydrochlorothiazide (HCTZ)(300/12.5 mg and 300/25 mg) Compared to Aliskiren 300 mg in Hypertensive Patients

NCT00386139
View directory record Official record
Conditions
Hypertension
Interventions
Aliskiren/HCTZ
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
881 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Feb 6, 2017 · Synced Sep 25, 2026, 1:26 AM EDT
Completed Phase 3 Interventional

A Clinical Study to Compare Combination of Aliskiren+ HCTZ to Irbesartan+ HCTZ or Amlodipine+ HCTZ or HCTZ Alone in Obese Hypertensive Not Responsive to HCTZ 25 mg

NCT00219115
View directory record Official record
Conditions
Hypertension
Interventions
aliskiren
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
493 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Feb 6, 2017 · Synced Sep 25, 2026, 1:26 AM 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 25, 2026, 1:26 AM 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 25, 2026, 1:26 AM 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 25, 2026, 1:26 AM EDT
Completed Not applicable Interventional Results available

Role of Mineralocorticoid Receptor in Diabetic Cardiovascular Disease

NCT00865124
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Vascular Disease
Interventions
Spironolactone, Hydrochlorothiazide + potassium, Placebo
Drug · Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 13, 2017 · Synced Sep 25, 2026, 1:26 AM EDT
Completed Phase 4 Interventional Results available

Blood Pressure Lowering of Aliskiren Hydrochlorothiazide (HCTZ) Versus Amlodipine in Stage 2 Hypertension in African Americans

NCT00739596
View directory record Official record
Conditions
Hypertension
Interventions
Aliskiren Hydrochlorothiazide (HCTZ): 8 weeks, Amlodipine: 8 weeks
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
332 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 Oct 26, 2016 · Synced Sep 25, 2026, 1:26 AM EDT
Completed Phase 4 Interventional

SMOOTH - Blood Pressure Control in Diabetic/Obese Patients

NCT00239538
View directory record Official record
Conditions
Hypertension, Diabetes Mellitus, Type 2
Interventions
telmisartan combined with hydrochlorothiazide (80/12.5 mg), valsartan combined with hydrochlorothiazide (160/12.5mg)
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
30 Years and older
Enrollment
840 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
60
States / cities
Birmingham, Alabama • Huntsville, Alabama • Mobile, Alabama + 47 more
Source: ClinicalTrials.gov public record
Updated Nov 7, 2013 · Synced Sep 25, 2026, 1:26 AM EDT
Completed Not applicable Interventional

Night Time Use of Thiazide Diuretics for Improved Reduction in Stone Risk in Stone Formers With Elevated Urine Calcium

NCT02711670
View directory record Official record
Conditions
Kidney Stones
Interventions
chlorthalidone, Hydrochlorothiazide
Drug
Lead sponsor
VA New York Harbor Healthcare System
Federal
Eligibility
18 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 Apr 26, 2023 · Synced Sep 25, 2026, 1:26 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

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

NCT01019590
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 25, 2026, 1:26 AM EDT
Completed Phase 3 Interventional

A Clinical Study to Evaluate the Long-term Safety (12 Months) of the Combination of Aliskiren 300 mg and Hydrochlorothiazide 25 mg

NCT00171405
View directory record Official record
Conditions
Hypertension
Interventions
aliskiren
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 17, 2016 · Synced Sep 25, 2026, 1:26 AM EDT
Completed Phase 3 Interventional Results available

A Long Term Safety Study to Test the Combination of Aliskiren/ Amlodipine / Hydrochlorothiazide in Participants With Essential Hypertension

NCT00667719
View directory record Official record
Conditions
Essential Hypertension
Interventions
Aliskiren, Amlodipine, Hydrochlorothiazide
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
564 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 6, 2021 · Synced Sep 25, 2026, 1:26 AM 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 25, 2026, 1:26 AM EDT
Completed Phase 3 Interventional

Ramipril and Hydrochlorothiazide Alone and in Combination for the Treatment of Essential Hypertension

NCT00355589
View directory record Official record
Conditions
Hypertension, Blood Pressure, High
Interventions
Ramipril and hydrochlorothiazide
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
60
States / cities
Birmingham, Alabama • Huntsville, Alabama • Glendale, Arizona + 51 more
Source: ClinicalTrials.gov public record
Updated Oct 9, 2012 · Synced Sep 25, 2026, 1:26 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Losartan Potassium/Hydrochlorothiazide 100/25 mg Tablets in Healthy Subjects Under Non-Fasting Conditions

NCT01149473
View directory record Official record
Conditions
Healthy
Interventions
Losartan potassium/Hydrochlorothiazide
Drug
Lead sponsor
Teva Pharmaceuticals USA
Industry
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Aug 19, 2024 · Synced Sep 25, 2026, 1:26 AM EDT
Completed Phase 4 Interventional

Efficacy and Safety of Valsartan/Hydrochlorothiazide Combination Therapy in Patients With Hypertension

NCT00277472
View directory record Official record
Conditions
Hypertension
Interventions
Valsartan/Hydrochlorothiazide, HCTZ
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2005
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 6, 2011 · Synced Sep 25, 2026, 1:26 AM 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 25, 2026, 1:26 AM 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 25, 2026, 1:26 AM 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 25, 2026, 1:26 AM EDT