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ClinicalTrials.gov public records Last synced Oct 27, 2026, 10:22 PM EDT

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Showing 1–24 of 59 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Diltiazem HCl Clear all
Not listed Phase 1 Interventional

Atrial Fibrillation: Chronic Beta-blocker Use Versus As-needed Rate Control Guided by Implantable Cardiac Monitor

NCT05745337
View directory record Official record
Conditions
Atrial Fibrillation, Diastolic Dysfunction, HFpEF - Heart Failure With Preserved Ejection Fraction
Interventions
As needed pharmacological rate control with beta-blocker (metoprolol tartrate, metoprolol succinate) or calcium channel blocker (diltiazem, verapamil)
Drug
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Mar 3, 2023 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Phase 4 Interventional Results available

Comparison of Diltiazem and Metoprolol in the Management of Acute Atrial Fibrillation or Atrial Flutter

NCT01914926
View directory record Official record
Conditions
Heart Rate and Rhythm Disorders
Interventions
Metoprolol, Diltiazem
Drug
Lead sponsor
Antonios Likourezos
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated May 15, 2014 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Treatment of Preclinical Hypertrophic Cardiomyopathy With Diltiazem

NCT00319982
View directory record Official record
Conditions
Hypertrophic Cardiomyopathy
Interventions
Diltiazem, Placebo
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
5 Years to 39 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2013
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 7, 2015 · Synced Oct 27, 2026, 10:22 PM EDT
Terminated Phase 3 Interventional Results available

AV Node Ablation and Pacemaker Therapy Compared to Drug Therapy for Atrial Fibrillation - Pilot Study

NCT00589303
View directory record Official record
Conditions
Atrial Fibrillation, Heart Failure
Interventions
FDA approved rate and rhythm control drugs, AV Node ablation and device implant
Drug · Device
Lead sponsor
Mayo Clinic
Other
Eligibility
65 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
5
States / cities
Scottsdale, Arizona • Evansville, Indiana • Rochester, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 4, 2013 · Synced Oct 27, 2026, 10:22 PM EDT
Withdrawn Phase 4 Interventional

Assessment of Intravenous Rate Control Response in Atrial Fibrillation Trial (AIRCRAFT)

NCT04234477
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Beta-blocker strategy, Calcium channel blocker strategy, Physician preference strategy
Drug
Lead sponsor
Boston University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 15, 2021 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Clinical Study of MK-4318 and Diltiazem in Healthy People (MK-4318-003)

NCT06692647
View directory record Official record
Conditions
Healthy, Pain
Interventions
MK-4318, Diltiazem
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 55 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 18, 2024 · Synced Oct 27, 2026, 10:22 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 22, 2016 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study in Healthy Volunteers to Investigate the Effects of Diltiazem on the Pharmacokinetics of Naloxegol

NCT01594619
View directory record Official record
Conditions
Drug Induced Constipation
Interventions
Naloxegol, Diltiazem XR
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 55 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Oct 15, 2014 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Not applicable Interventional Results available

The Effects of Ranolazine on Exercise Capacity in Patients With Heart Failure With Preserved Ejection Fraction

NCT01505179
View directory record Official record
Conditions
Heart Failure With Preserved Ejection Fraction
Interventions
Ranolazine, Placebo
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 18, 2020 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Not applicable Interventional Results available

Ablation vs Drug Therapy for Atrial Fibrillation - Pilot Trial

NCT00578617
View directory record Official record
Conditions
Atrial Fibrillation, Arrhythmia
Interventions
Rate Control, Ablation Therapy, Rhythm control
Drug · Device
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 90 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
10
States / cities
Birminham, Alabama • Los Angeles, California • Maywood, Illinois + 7 more
Source: ClinicalTrials.gov public record
Updated Jan 4, 2013 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Phase 1 Interventional

Drug Discrimination in Methadone-Maintained Humans Study 2

NCT00733239
View directory record Official record
Conditions
Opioid Dependence
Interventions
2-4 of the drugs listed below
Drug
Lead sponsor
University of Arkansas
Other
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Apr 18, 2012 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Interactions Between HIV Protease Inhibitors and Calcium Channel Blockers

NCT00039975
View directory record Official record
Conditions
HIV Infections, Cardiovascular Diseases, Hypertension
Interventions
Indinavir sulfate, Ritonavir, Amlodipine, Diltiazem HCl
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 60 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 2004
U.S. locations
9
States / cities
San Francisco, California • Stanford, California • Denver, Colorado + 6 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2021 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Phase 4 Interventional Results available

Diltiazem in the Treatment of Atrial Fibrillation or Atrial Flutter With Rapid Ventricular Rate

NCT05661942
View directory record Official record
Conditions
Atrial Fibrillation With Rapid Ventricular Response, Hypotension Drug-Induced
Interventions
Calcium pre-treatment, Placebo
Drug · Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Oak Lawn, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 10, 2025 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study of LY2623091 in Healthy Participants

NCT02300259
View directory record Official record
Conditions
Healthy Volunteers
Interventions
LY2623091, Itraconazole, Simvastatin, Tadalafil, Diltiazem
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Daytona Beach, Florida
Source: ClinicalTrials.gov public record
Updated Jun 26, 2020 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Phase 2Phase 3 Interventional

African American Study of Kidney Disease and Hypertension ABPM Pilot Study

NCT00582777
View directory record Official record
Conditions
Hypertensive Renal Disease
Interventions
USUAL - take your BP Meds as you usually do, HS DOSING, ADD On Dosing
Behavioral · Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
16
States / cities
Birmingham, Alabama • Los Angeles, California • San Diego, California + 12 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2012 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Phase 3 Interventional Results available

HALT Progression of Polycystic Kidney Disease Study A

NCT00283686
View directory record Official record
Conditions
Kidney, Polycystic
Interventions
Lisinopril, Telmisartan, Placebo, Standard Blood Pressure Control, Low Blood Pressure Control
Drug · Other
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
15 Years to 64 Years
Enrollment
558 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2014
U.S. locations
7
States / cities
Aurora, Colorado • Atlanta, Georgia • Kansas City, Kansas + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 21, 2020 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Evaluate the Effect of Diltiazem Extended Release on the Pharmacokinetics of E2027 in Healthy Subjects

NCT02947711
View directory record Official record
Conditions
Healthy Subjects
Interventions
E2027, Diltiazem ER
Drug
Lead sponsor
Eisai Co., Ltd.
Industry
Eligibility
18 Years to 50 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Mar 7, 2017 · Synced Oct 27, 2026, 10:22 PM EDT
Not yet recruiting No phase listed Observational

Assessing the Neurological Outcomes After Atrial Fibrillation Ablation for Rhythm Control

NCT06783868
View directory record Official record
Conditions
Atrial Fibrillation, Stroke
Interventions
Catheter Ablation, Market-approved AVNB, OAC and AAD
Device · Drug
Lead sponsor
Kansas City Heart Rhythm Research Foundation
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
7
States / cities
Overland Park, Kansas • Independence, Missouri • Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 28, 2025 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Not applicable Interventional Results available

Catheter Ablation vs Anti-arrhythmic Drug Therapy for Atrial Fibrillation Trial

NCT00911508
View directory record Official record
Conditions
Atrial Fibrillation, Arrhythmia
Interventions
Left atrial ablation, Rate or Rhythm Control Therapy
Device · Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 90 Years
Enrollment
2,204 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2017
U.S. locations
76
States / cities
Little Rock, Arkansas • Los Angeles, California • Sacramento, California + 66 more
Source: ClinicalTrials.gov public record
Updated Apr 21, 2021 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Phase 4 Interventional Results available

Ranolazine and Microvascular Angina by PET in the Emergency Department

NCT02052011
View directory record Official record
Conditions
Microvascular Angina
Interventions
Ranolazine, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
30 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 16, 2017 · Synced Oct 27, 2026, 10:22 PM EDT
Recruiting Phase 1Phase 2 Interventional

Vasodilator Therapy With Isosorbide Mononitrate or Diltiazem to Reduce Vasotoxicity in Patients With Gastrointestinal Cancer Receiving Fluoropyrimidine Therapy

NCT07456852
View directory record Official record
Conditions
Malignant Digestive System Neoplasm
Interventions
Biospecimen Collection, Capecitabine, Diltiazem Hydrochloride, Electrocardiogram, Fluorouracil, Holter Monitoring, Isosorbide Mononitrate, Medical Device Usage and Evaluation, Placebo Administration, Questionnaire Administration
Procedure · Drug · Device + 1 more
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Oct 27, 2026, 10:22 PM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

A 21-Day Topical Safety Study of Diltiazem Hydrochloride Using a Cumulative Irritant Patch Test Design

NCT01821274
View directory record Official record
Conditions
Skin Irritation
Interventions
Diltiazem Hydrochloride 2% Cream, Vehicle Cream, 0.1% solution o sodium lauryl sulfate (SLS), Saline 0.9%
Drug
Lead sponsor
Ventrus Biosciences, Inc
Industry
Eligibility
18 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Paramus, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 21, 2013 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of the Effect of Multiple Doses of Diltiazem on the Plasma Levels of MK-6916 in Healthy Participants (MK-6916-005)

NCT06818968
View directory record Official record
Conditions
Healthy
Interventions
MK-6916, Diltiazem
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 55 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 26, 2025 · Synced Oct 27, 2026, 10:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Determine the Effect of Repeated Administration of Diltiazem on the Pharmacokinetics of Darapladib (Sb-480848).

NCT01852565
View directory record Official record
Conditions
Atherosclerosis
Interventions
Darapladib, Diltiazem
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 13, 2017 · Synced Oct 27, 2026, 10:22 PM EDT