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Showing 1–24 of 160 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: HCTZ Clear all
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Salt Loading and Thiazide Intervention Study

NCT00896389
View directory record Official record
Conditions
Hypertension
Interventions
Salt loading, Hydrochlorothiazide (HCTZ)
Procedure · Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 65 Years
Enrollment
124 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
Lancaster, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 24, 2022 · Synced Sep 3, 2026, 3:50 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 3, 2026, 3:50 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 3, 2026, 3:50 AM EDT
Completed Phase 4 Interventional Results available

An Examination of the Blood Pressure Lowering Ability and Safety of Olmesartan Medoxomil in Patients With Type II Diabetes

NCT00403481
View directory record Official record
Conditions
Hypertension
Interventions
olmesartan medoxomil, Olmesartan medoxomil plus Hydrochlorothiazide
Drug
Lead sponsor
Daiichi Sankyo
Industry
Eligibility
18 Years and older
Enrollment
192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
27
States / cities
Birmingham, Alabama • Mesa, Arizona • Searcy, Arkansas + 24 more
Source: ClinicalTrials.gov public record
Updated Nov 2, 2016 · Synced Sep 3, 2026, 3:50 AM EDT
Completed Not applicable Interventional

Renin Profiling in Selection of Initial Antihypertensive Drug

NCT00834600
View directory record Official record
Conditions
Hypertension
Interventions
olmesartan, hydrochlorothiazide, amlodipine, hydrochlorothiazide (HCTZ) or olmesartan
Drug
Lead sponsor
The Louis & Rachel Rudin Foundation
Other
Eligibility
40 Years to 85 Years
Enrollment
185 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
5
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Apr 18, 2012 · Synced Sep 3, 2026, 3:50 AM EDT
Completed Phase 3 Interventional Results available

A Safety and Efficacy Trial of Aliskiren 150mg , 300 mg Compared to Ramipril 5mg, 10mg in the Elderly

NCT00368277
View directory record Official record
Conditions
Hypertension
Interventions
Aliskiren, Ramipril, Hydrochlorothiazide, Amlodipine
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
65 Years and older
Enrollment
901 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Mar 24, 2011 · Synced Sep 3, 2026, 3:50 AM EDT
Completed Phase 3 Interventional Results available

An Assessment of Long Term Safety of the Combination of Aliskiren / Amlodipine in Patients With High Blood Pressure

NCT00402103
View directory record Official record
Conditions
Hypertension
Interventions
Aliskiren, Amlodipine, Hydrochlorothiazide
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
556 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Santa Fe, New Mexico
Source: ClinicalTrials.gov public record
Updated Mar 9, 2011 · Synced Sep 3, 2026, 3:50 AM 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 3, 2026, 3:50 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 3, 2026, 3:50 AM EDT
Completed Phase 2 Interventional Results available

ACES - ACE Inhibitors Combined With Exercise for Seniors With Hypertension

NCT03295734
View directory record Official record
Conditions
Hypertension, Aging, Sedentary Lifestyle
Interventions
Aerobic exercise, Perindopril, Losartan, HCTZ
Behavioral · Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
60 Years and older
Enrollment
223 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
2
States / cities
Birmingham, Alabama • Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Jul 21, 2025 · Synced Sep 3, 2026, 3:50 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 3, 2026, 3:50 AM 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 3, 2026, 3:50 AM 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 3, 2026, 3:50 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 3, 2026, 3:50 AM EDT
Completed Phase 4 Interventional Results available

An Examination of the Blood Pressure Lowering Ability and Safety of Olmesartan Medoxomil in Elderly Patients With Hypertension

NCT00412932
View directory record Official record
Conditions
Hypertension
Interventions
Olmesartan medoxomil, Olmesartan medoxomil/hydrochlorothiazide
Drug
Lead sponsor
Daiichi Sankyo
Industry
Eligibility
65 Years and older
Enrollment
178 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
29
States / cities
Birmingham, Alabama • Mesa, Arizona • Long Beach, California + 26 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2009 · Synced Sep 3, 2026, 3:50 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 3, 2026, 3:50 AM 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 3, 2026, 3:50 AM EDT
Completed Phase 3 Interventional

Safety/Efficacy of Combo Therapy With Aliskiren & Hydrochlorothiazide vs Therapy With Hydrochlorothiazide Alone in Patients With Hypertension

NCT00387517
View directory record Official record
Conditions
Hypertension
Interventions
Aliskiren/HCTZ
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
726 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 3, 2026, 3:50 AM 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 3, 2026, 3:50 AM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

The Study of Novel Dual Renin Angiotensin Aldosterone System (RAAS) Blockade; Valsartan/Aliskiren in African American Patients With Hypertension and the Metabolic Syndrome

NCT01432106
View directory record Official record
Conditions
Hypertension, Metabolic Syndrome
Interventions
Aliskerin/Valsartan and Rampiril
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 80 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 17, 2013 · Synced Sep 3, 2026, 3:50 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 3, 2026, 3:50 AM 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 3, 2026, 3:50 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 3, 2026, 3:50 AM EDT
Completed Phase 4 Interventional Results available

Study of the Efficacy and Safety of Aliskiren HCTZ vs Ramipril in Obese Patients (BMI ≥ 30) With Stage 2 Hypertension

NCT00772577
View directory record Official record
Conditions
Hypertension
Interventions
Aliskiren Hydrochlorothiazide, Ramipril
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
386 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
6
States / cities
Beverly Hills, California • Santa Ana, California • Conyers, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 10, 2011 · Synced Sep 3, 2026, 3:50 AM EDT