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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Clopidogrel Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

PACT (Platelet Activity After Clopidogrel Termination)

NCT00619073
View directory record Official record
Conditions
Blood Platelets, Clopidogrel
Interventions
clopidogrel + aspirin, placebo, Aspirin
Drug
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
21 Years to 70 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 30, 2018 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Hybrid Effectiveness-Implementation Study to Improve Clopidogrel Adherence

NCT01609842
View directory record Official record
Conditions
Cardiovascular Disease, Acute Coronary Syndrome
Interventions
Multifaceted Intervention with pharmacist and IVR
Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 91 Years
Enrollment
14,573 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2022
U.S. locations
15
States / cities
Aurora, Colorado • Washington D.C., District of Columbia • Gainesville, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Jul 20, 2023 · Synced Sep 22, 2026, 10:05 PM EDT
Terminated Phase 3 Interventional

Clopidogrel and the Optimization of Gastrointestinal Events (COGENT-1)

NCT00557921
View directory record Official record
Conditions
Acute Coronary Syndrome, Myocardial Infarction, Coronary Artery Disease, Percutaneous Coronary Intervention
Interventions
CGT-2168 (clopidogrel 75 mg/omeprazole 20 mg) and aspirin, Plavix (clopidogrel 75 mg) and aspirin
Drug
Lead sponsor
Cogentus Pharmaceuticals
Industry
Eligibility
21 Years and older
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
247
States / cities
Alexander City, Alabama • Birmingham, Alabama • Geneva, Alabama + 205 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2009 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 2 Interventional Results available

Third Optimizing Anti-Platelet Therapy in Diabetes MellitUS (OPTIMUS-3)

NCT00642174
View directory record Official record
Conditions
Diabetes Mellitus, Coronary Artery Disease
Interventions
prasugrel, Clopidogrel
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 74 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
4
States / cities
Jacksonville, Florida • Worcester, Massachusetts • New York, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 22, 2010 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study Evaluating Effect of Esomeprazole, Omeprazole or Lansoprazole on the Pharmacodynamics (PD) and Pharmacokinetics (PK) of Clopidogrel

NCT01147588
View directory record Official record
Conditions
Healthy
Interventions
lansoprazole, omeprazole, esomeprazole, clopidogrel
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 55 Years
Enrollment
149 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Jun 27, 2011 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

The Impact of Grapefruit Juice on the Response to Clopidogrel

NCT00817999
View directory record Official record
Conditions
Healthy
Interventions
Grapefruit juice, Clopidogrel 75 mg/day, Clopidogrel 300 mg
Dietary Supplement · Drug
Lead sponsor
Creighton University
Other
Eligibility
19 Years to 40 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 30, 2012 · Synced Sep 22, 2026, 10:05 PM EDT
Terminated Phase 2 Interventional Results available

Testing Platelet Reactivity In Patients Undergoing Elective Stent Placement on Clopidogrel to Guide Alternative Therapy With Prasugrel (TRIGGER-PCI)

NCT00910299
View directory record Official record
Conditions
Coronary Artery Disease (CAD)
Interventions
Prasugrel, Clopidogrel
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 80 Years
Enrollment
423 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
9
States / cities
Clearwater, Florida • Jacksonville, Florida • Rome, Georgia + 6 more
Source: ClinicalTrials.gov public record
Updated Jun 7, 2012 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 3 Interventional Results available

A Study Comparing Cardiovascular Effects of Ticagrelor and Clopidogrel in Patients With Peripheral Artery Disease

NCT01732822
View directory record Official record
Conditions
Peripheral Artery Disease
Interventions
Ticagrelor, Clopidogrel
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
50 Years to 130 Years
Enrollment
13,885 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
290
States / cities
Alexander City, Alabama • Auburn, Alabama • Birmingham, Alabama + 239 more
Source: ClinicalTrials.gov public record
Updated Oct 29, 2017 · Synced Sep 22, 2026, 10:05 PM EDT
Recruiting No phase listed Observational

A Precision Medicine Approach to Identify Patients Undergoing Elective PCI at Risk of Peri-PCI Myocardial Infarction

NCT05332262
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
Assessment of platelet reactivity, Troponin measurement
Diagnostic Test
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 19, 2026 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 2 Interventional Results available

A Study of the Onset and Offset of Antiplatelet Effects Comparing Ticagrelor, Clopidogrel, and Placebo With Aspirin

NCT00528411
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
Ticagrelor Tablets, Clopidogrel (over encapsulated) capsule, Aspirin Tablets
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
123 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
8
States / cities
Baton Rouge, Louisiana • Baltimore, Maryland • Towson, Maryland + 5 more
Source: ClinicalTrials.gov public record
Updated Jan 12, 2012 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of a High-fat Meal on Assessment of Clopidogrel-induced Platelet Inhibition in Healthy Subjects

NCT01307657
View directory record Official record
Conditions
Healthy
Interventions
high fat meal
Other
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Aug 31, 2023 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 4 Interventional Results available

Impact of Evolocumab on the Effects of Clopidogrel in Patients With High On-Treatment Platelet Reactivity

NCT03096288
View directory record Official record
Conditions
Atherosclerotic Cardiovascular Disease
Interventions
Evolocumab, Placebo
Drug · Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
259 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 16, 2022 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 4 Interventional Results available

Prasugrel/Clopidogrel Maintenance Dose Washout Study

NCT01014624
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
Prasugrel, Clopidogrel
Drug
Lead sponsor
Daiichi Sankyo
Industry
Eligibility
18 Years to 74 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
4
States / cities
La Jolla, California • Jacksonville, Florida • Cincinnati, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2021 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 4 Interventional Results available

Pharmacogenomics of Antiplatelet Response - I

NCT01815008
View directory record Official record
Conditions
Platelet Aggregation, Platelet Transcriptome, Coronary Artery Disease
Interventions
Clopidogrel, Aspirin
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
45 Years to 75 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 8, 2017 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 3 Interventional

Clopidogrel Prevention of Early Arteriovenous (AV) Fistula Thrombosis

NCT03289520
View directory record Official record
Conditions
Kidney Failure, Hemodialysis Fistula Thrombosis
Interventions
Clopidogrel, Placebo
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Enrollment
877 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
9
States / cities
Birmingham, Alabama • Iowa City, Iowa • Portland, Maine + 6 more
Source: ClinicalTrials.gov public record
Updated Sep 18, 2025 · Synced Sep 22, 2026, 10:05 PM EDT
Withdrawn No phase listed Observational

Causes of Health Disparities in African Americans With Coronary Artery Disease on Clopidogrel

NCT04619381
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
CORONARY ARTERY DISEASE AND CLOPIDOGREL: PATIENT SURVEY
Behavioral
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 31, 2021 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 4 Interventional Results available

A Pharmacodynamic Study With Ticagrelor in African American Patients

NCT01523392
View directory record Official record
Conditions
Stable Coronary Artery Disease
Interventions
Ticagrelor, Clopidogrel
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
8
States / cities
Newark, Delaware • Wilmington, Delaware • Washington D.C., District of Columbia + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 7, 2014 · Synced Sep 22, 2026, 10:05 PM EDT
Not listed Phase 2Phase 3 Interventional

Effects of Different Doses of Ticagrelor on Platelet Aggregation and Endothelial Function in Diabetic Patients With Stable Coronary Artery Disease

NCT02889549
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
ticagrelor, clopidogrel
Drug
Lead sponsor
First Affiliated Hospital of Harbin Medical University
Other
Eligibility
18 Years to 75 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2016
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Feb 22, 2017 · Synced Sep 22, 2026, 10:05 PM EDT
Withdrawn Phase 4 Interventional

Comparison of Ticagrelor Versus Clopidogrel on Residual Thrombus Burden During PCI: an OCT Study

NCT01826175
View directory record Official record
Conditions
Acute Coronary Syndrome, Coronary Artery Disease
Interventions
Ticagrelor, Clopidogrel, Optical Coherence Tomography
Drug · Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 79 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 19, 2016 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 1 Interventional Results available

MK-2060 and Clopidogrel Co-administration Safety and Tolerability Study in Participants With End-Stage Renal Disease (ESRD) (MK-2060-008)

NCT05335005
View directory record Official record
Conditions
End-Stage Renal Disease, Kidney Failure, Chronic
Interventions
MK-2060
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 80 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Oct 16, 2024 · Synced Sep 22, 2026, 10:05 PM EDT
Withdrawn Phase 2 Interventional

Effect of Primidone on Platelet Responsiveness in Patients Determined to be Clopidogrel Resistant

NCT02008123
View directory record Official record
Conditions
Clopidogrel Resistance, Secondary Stroke Prevention
Interventions
Primidone
Drug
Lead sponsor
Dent Neuroscience Research Center
Other
Eligibility
18 Years to 90 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
1
States / cities
Amherst, New York
Source: ClinicalTrials.gov public record
Updated Aug 2, 2016 · Synced Sep 22, 2026, 10:05 PM EDT
Not listed Phase 2Phase 3 Interventional

Half-dose Ticagrelor Overcomes High-dose Clopidogrel in Acute Coronary Syndrome Patients With High On-Clopidogrel Platelet Reactivity

NCT03062462
View directory record Official record
Conditions
Coronary Artery Disease, Clopidogrel, Poor Metabolism of
Interventions
Clopidogrel, ticagrelor
Drug
Lead sponsor
First Affiliated Hospital of Harbin Medical University
Other
Eligibility
18 Years to 75 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Havertown, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 6, 2018 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 3 Interventional

Clopidogrel for High Atherothrombotic Risk and Ischemic Stabilization, Management and Avoidance (CHARISMA)

NCT00050817
View directory record Official record
Conditions
Arteriosclerosis
Interventions
clopidogrel (SR25990)
Drug
Lead sponsor
Sanofi
Industry
Eligibility
45 Years and older
Enrollment
15,603 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2005
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 22, 2012 · Synced Sep 22, 2026, 10:05 PM EDT
Withdrawn Phase 4 Interventional

Comparing Ticagrelor and Clopidogrel Pharmacodynamics After Thrombolysis

NCT02048085
View directory record Official record
Conditions
Acute ST Segment Elevation Myocardial Infarction, Acute Coronary Syndrome
Interventions
Ticagrelor, Clopidogrel
Drug
Lead sponsor
Medical Center of South Arkansas
Other
Eligibility
18 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
El Dorado, Arkansas
Source: ClinicalTrials.gov public record
Updated Apr 3, 2018 · Synced Sep 22, 2026, 10:05 PM EDT