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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Aspirin Prophylaxis Clear all
Completed Phase 3 Interventional Results available

A Study to Evaluate the Incidence of Gastric Ulcers Following Administration of Either PA32540 or Enteric Coated Aspirin 325 mg in Subjects Who Are at Risk for Developing Aspirin-Associated Ulcers

NCT00961350
View directory record Official record
Conditions
Gastric Ulcer
Interventions
PA32540, EC Aspirin 325
Drug
Lead sponsor
POZEN
Industry
Eligibility
55 Years and older
Enrollment
530 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 17, 2016 · Synced Sep 27, 2026, 7:59 AM EDT
Recruiting Phase 3 Interventional

REGN7508 Versus Acetylsalicylic Acid (ASA) for Venous Thromboprophylaxis After Total Knee Arthroplasty in Adult Participants

NCT07213778
View directory record Official record
Conditions
Symptomatic Venous Thromboembolism (VTE)
Interventions
REGN7508, Acetylsalicylic Acid (ASA), Placebo
Drug
Lead sponsor
Regeneron Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
36
States / cities
La Mesa, California • Rancho Mirage, California • Riverside, California + 28 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Sep 27, 2026, 7:59 AM EDT
Completed Phase 3 Interventional

Secondary Prevention of Small Subcortical Strokes Trial

NCT00059306
View directory record Official record
Conditions
Cerebrovascular Accident, Hypertension
Interventions
aspirin, clopidogrel, Target of Blood Pressure, placebo
Drug · Other
Lead sponsor
University of British Columbia
Other
Eligibility
30 Years and older
Enrollment
3,020 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2012
U.S. locations
39
States / cities
Mobile, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 32 more
Source: ClinicalTrials.gov public record
Updated Apr 3, 2013 · Synced Sep 27, 2026, 7:59 AM EDT
Completed Phase 3 Interventional Results available

Dabigatran Etexilate for Secondary Stroke Prevention in Patients With Embolic Stroke of Undetermined Source (RE-SPECT ESUS)

NCT02239120
View directory record Official record
Conditions
Stroke, Secondary Prevention
Interventions
optional ASA as comedication, placebo to ASA, placebo to optional ASA as comedication, placebo to dabigatran etexilate, ASA 100 mg, dabigatran etexilate
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years to 150 Years
Enrollment
5,390 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
110
States / cities
Phoenix, Arizona • Beverly Hills, California • El Cajon, California + 94 more
Source: ClinicalTrials.gov public record
Updated Sep 5, 2019 · Synced Sep 27, 2026, 7:59 AM EDT
Completed Not applicable Interventional Results available

Aspirin and Compression Devices for VTE Prophylaxis in Orthopaedic Oncology

NCT01696760
View directory record Official record
Conditions
Bone Metastases, Musculoskeletal Cancer, Soft Tissue Sarcoma, Thromboembolism
Interventions
acetylsalicylic acid, enoxaparin, PCD
Drug · Device
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 4, 2018 · Synced Sep 27, 2026, 7:59 AM EDT
Terminated Phase 3 Interventional Results available

Rivaroxaban Versus Aspirin in Secondary Prevention of Stroke and Prevention of Systemic Embolism in Patients With Recent Embolic Stroke of Undetermined Source (ESUS)

NCT02313909
View directory record Official record
Conditions
Stroke
Interventions
Rivaroxaban (Xarelto, BAY59-7939), Acetylsalicylic acid (Aspirin, BAY1019036), Rivaroxaban-Placebo, Aspirin-Placebo
Drug · Other
Lead sponsor
Bayer
Industry
Eligibility
50 Years and older
Enrollment
7,213 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
38
States / cities
Tucson, Arizona • Long Beach, California • Stanford, California + 32 more
Source: ClinicalTrials.gov public record
Updated Jan 8, 2019 · Synced Sep 27, 2026, 7:59 AM EDT
Terminated Phase 4 Interventional Results available

Aspirin and Enoxaparin for VTE in Trauma

NCT02396732
View directory record Official record
Conditions
Venous Thromboembolism, Thromboprophylaxis, Trauma
Interventions
Aspirin, Enoxaparin
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Nov 18, 2019 · Synced Sep 27, 2026, 7:59 AM EDT
Completed Phase 3 Interventional Results available

Atrial Fibrillation Clopidogrel Trial With Irbesartan for Prevention of Vascular Events (ACTIVE A)

NCT00249873
View directory record Official record
Conditions
Atrial Fibrillation, Vascular Risk
Interventions
clopidogrel (SR25990C), placebo
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
7,554 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2009
U.S. locations
1
States / cities
Bridgewater, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 14, 2015 · Synced Sep 27, 2026, 7:59 AM EDT
Completed Phase 4 Interventional

Antiplatelet Therapy to Prevent Stroke in African Americans

NCT00004727
View directory record Official record
Conditions
Stroke, Cerebral Infarction
Interventions
aspirin, ticlopidine
Drug
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
29 Years to 85 Years
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 27, 2026, 7:59 AM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Aspirin (ASA) Therapy and Preeclampsia Prevention

NCT04158830
View directory record Official record
Conditions
Preeclampsia
Interventions
Aspirin 81 mg Enteric Coated Tab - 1 tablet, Aspirin 81 mg Enteric Coated Tab - 2 tablets
Drug
Lead sponsor
University of Tennessee
Other
Eligibility
14 Years to 50 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 12, 2020 · Synced Sep 27, 2026, 7:59 AM EDT
Terminated Phase 2 Interventional

Comparison of Sulindac, Aspirin, and Ursodiol in Preventing Colorectal Cancer

NCT00062023
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Acetylsalicylic acid (Aspirin), Sulindac, Ursodiol, Sulindac Placebo
Drug · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
40 Years to 80 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 29, 2012 · Synced Sep 27, 2026, 7:59 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Improving Prenatal Care to Reduce Early Onset Preeclampsia in Low-Income

NCT07491510
View directory record Official record
Conditions
Monitoring Blood Pressure, Aspirin Prophylaxis
Interventions
Active Comparator: Behavioral: Experimental: Centering HER (routine prenatal care + 7 doula-led 90-minute virtual group
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 27, 2026, 7:59 AM EDT
Completed Phase 2 Interventional Results available

PETRO Stroke Prevention in Patients With AF by Treatment With Dabigatran, With and Without Aspirin, Compared to Warfarin

NCT01227629
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
dabigatran with ASA, warfarin, dabigatran without ASA
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years and older
Enrollment
502 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2003
U.S. locations
14
States / cities
Fayetteville, Arkansas • La Mesa, California • Pensacola, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated May 4, 2014 · Synced Sep 27, 2026, 7:59 AM EDT
Completed Phase 2 Interventional Results available

LIPS-A: Lung Injury Prevention Study With Aspirin

NCT01504867
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome
Interventions
Aspirin, Lactose powder
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
16
States / cities
Stanford, California • Bridgeport, Connecticut • Gainsville, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Mar 5, 2017 · Synced Sep 27, 2026, 7:59 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of ASA on Prostate Tissue

NCT00234299
View directory record Official record
Conditions
Prostate Cancer
Interventions
Aspirin, Placebo
Drug
Lead sponsor
University of Washington
Other
Eligibility
45 Years to 74 Years · Male only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2015
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 24, 2016 · Synced Sep 27, 2026, 7:59 AM EDT
Completed Phase 4 Interventional Results available

Aspirin for Prevention of Venous Thromboembolism Among Ovarian Cancer Patients Receiving Neoadjuvant Chemotherapy

NCT04352439
View directory record Official record
Conditions
Venous Thromboembolism, Ovarian Cancer
Interventions
Aspirin
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older · Female only
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
2
States / cities
Sarasota, Florida • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 25, 2022 · Synced Sep 27, 2026, 7:59 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Testing a Community Intervention to Increase Aspirin Use

NCT02607917
View directory record Official record
Conditions
Myocardial Infarction, Stroke
Interventions
Mass Media plus clinic intervention., Media
Other
Lead sponsor
University of Minnesota
Other
Eligibility
45 Years to 75 Years
Enrollment
10,800 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 1, 2021 · Synced Sep 27, 2026, 7:59 AM EDT
Terminated Phase 2 Interventional Results available

Aspirin Prophylaxis for Venous Thromboembolism in Glioblastoma

NCT00790452
View directory record Official record
Conditions
Glioblastoma
Interventions
Aspirin, Placebo
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 7, 2011 · Synced Sep 27, 2026, 7:59 AM EDT
Recruiting Phase 4 Interventional

Effectiveness of Two Aspirin Doses for Prevention of Hypertensive Disorders of Pregnancy: ASPIRIN TRIAL

NCT06468202
View directory record Official record
Conditions
Hypertensive Disorders of Pregnancy, Preeclampsia, Gestational Hypertension
Interventions
Aspirin 81 mg, Aspirin 162 mg
Drug
Lead sponsor
Ohio State University
Other
Eligibility
14 Years to 35 Years · Female only
Enrollment
10,742 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
16
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 13 more
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Sep 27, 2026, 7:59 AM EDT
Completed Phase 4 Interventional Results available

DOACs for Stroke Prevention Post Ventricular Tachycardia Ablation

NCT02666742
View directory record Official record
Conditions
Ventricular Tachycardia, Premature Ventricular Contraction, Stroke
Interventions
DOAC, Aspirin
Drug
Lead sponsor
Kansas City Heart Rhythm Institute
Other
Eligibility
18 Years to 80 Years
Enrollment
246 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
4
States / cities
Kansas City, Kansas • Overland Park, Kansas • The Bronx, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 21, 2022 · Synced Sep 27, 2026, 7:59 AM EDT
Terminated Not applicable Interventional Results available

Oral Progesterone and Low Dose Aspirin in the Prevention of Preeclampsia

NCT00719537
View directory record Official record
Conditions
Preeclampsia
Interventions
Aspirin, Placebo Oral Tablet, Progesterone
Drug
Lead sponsor
John Uckele
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 16, 2017 · Synced Sep 27, 2026, 7:59 AM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

Aspirin Dose Escalation for the Prevention of Recurrent Preterm Delivery Trial

NCT06980025
View directory record Official record
Conditions
Preterm Delivery, Obstetrical Complications
Interventions
162mg Aspirin, 81mg Aspirin
Drug
Lead sponsor
The George Washington University Biostatistics Center
Other
Eligibility
14 Years and older · Female only
Enrollment
1,800 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
14
States / cities
Birmingham, Alabama • San Francisco, California • Chicago, Illinois + 10 more
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Sep 27, 2026, 7:59 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Early Prevention of Preeclampsia Study

NCT01547390
View directory record Official record
Conditions
Preeclampsia
Interventions
Aspirin, placebo
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
Female only
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 28, 2018 · Synced Sep 27, 2026, 7:59 AM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Low Dose Aspirin for Preterm Preeclampsia Preventionmg/day Dose in High-risk Patients

NCT05514847
View directory record Official record
Conditions
Preeclampsia, Pregnancy Related
Interventions
Aspirin 81Mg Ec Tab, Aspirin 162Mg Ec Tab
Drug
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 14, 2025 · Synced Sep 27, 2026, 7:59 AM EDT