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Showing 1–24 of 342 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Aspirin Clear all
Not yet recruiting Early Phase 1 Interventional Accepts healthy volunteers

Timed Aspirin Chronobiome Study

NCT03590821
View directory record Official record
Conditions
Healthy
Interventions
Aspirin 81 mg, Celecoxib 200mg capsule
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2027 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Jul 21, 2026, 5:31 PM EDT
Completed Not applicable Interventional

High Omega-3/Low Omega-6 Treatment Diet for Aspirin-exacerbated Respiratory Disease (AERD)

NCT02064738
View directory record Official record
Conditions
ASA Triad, Asthma, Nasal Polyps, And Aspirin Intolerance
Interventions
Restricting daily intake of omega-6 fatty acids to less than 4 grams and increasing omega-3 fatty acids to 3 grams
Behavioral
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 15, 2019 · Synced Jul 21, 2026, 5:31 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Effect of Aspirin on Hemostatic and Vascular Function After Live Fire Fighting

NCT01276691
View directory record Official record
Conditions
Cardiovascular Risk Factor, C.Medical Procedure; Vascular, Functional or Late, Electrolyte and Fluid Balance Conditions
Interventions
81 mg enteric coated aspirin
Drug
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
40 Years to 60 Years · Male only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Champaign, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 20, 2020 · Synced Jul 21, 2026, 5:31 PM EDT
Withdrawn Phase 1 Interventional

Pilot Study of Aspirin Versus Warfarin for Cervicocephalic Arterial Dissection

NCT00265408
View directory record Official record
Conditions
Ischemic Stroke
Interventions
aspirin, warfarin
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Dec 7, 2014 · Synced Jul 21, 2026, 5:31 PM EDT
Completed Phase 2 Interventional

Aspirin as an Ultraviolet (UV) Protectant in Human Subjects at Risk for Melanoma

NCT04066725
View directory record Official record
Conditions
Melanoma (Skin)
Interventions
Aspirin 81 mg, Aspirin 325mg, Placebo oral tablet
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 17, 2022 · Synced Jul 21, 2026, 5:31 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Role of IL-5R Signaling in Non-eosinophil Upper Airway Cells in CRSwNP

NCT05672030
View directory record Official record
Conditions
Nasal Polyps, Aspirin-exacerbated Respiratory Disease
Interventions
Non-Interventional
Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 23, 2025 · Synced Jul 21, 2026, 5:31 PM EDT
Not yet recruiting Phase 4 Interventional Accepts healthy volunteers

Low Dose Aspirin to Lower Inflammation and Prevent Endometrial Cancer in Postmenopausal Women With Non-atrophic Endometrial Changes and Pain

NCT07281547
View directory record Official record
Conditions
Endometrial Carcinoma
Interventions
Biospecimen Collection, Low-Dose Aspirin, Patient Observation, Questionnaire Administration, Ultrasound Imaging
Procedure · Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
Female only
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Jul 21, 2026, 5:31 PM EDT
Active, not recruiting Early Phase 1 Interventional Results available

ASPIRED-XT: ASPirin Intervention for the REDuction of Colorectal Cancer Risk -EXTension

NCT05056896
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Aspirin, Placebo
Drug · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
161 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Jul 21, 2026, 5:31 PM EDT
Recruiting Phase 2 Interventional

Optimal Dosing For Low-Dose Aspirin Chemoprophylaxis For VTE Following Total Joint Arthroplasty

NCT04295486
View directory record Official record
Conditions
Venous Thromboembolism
Interventions
Aspirin
Drug
Lead sponsor
University of Miami
Other
Eligibility
19 Years and older
Enrollment
5,478 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Jul 21, 2026, 5:31 PM EDT
Not yet recruiting No phase listed Observational

Perioperative Risk in Patients on Chronic Aspirin Undergoing Craniotomy

NCT07086183
View directory record Official record
Conditions
Aneurysm Cerebral
Interventions
Observation
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 6, 2026 · Synced Jul 21, 2026, 5:31 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to See if Platelet Transfusion Stop or Lessen the Effect of the Drug on Platelets

NCT01744288
View directory record Official record
Conditions
Inhibition on Platelet Aggregation
Interventions
Ticagrelor, Clopidogrel, ASA
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 50 Years
Enrollment
258 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Apr 23, 2014 · Synced Jul 21, 2026, 5:31 PM 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 Jul 21, 2026, 5:31 PM EDT
Terminated No phase listed Observational Results available

Diagnosis of Aspirin Hypersensitivity in Aspirin Exacerbated Respiratory Disease

NCT01320072
View directory record Official record
Conditions
Asthma, Aspirin-induced
Interventions
Not listed
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years to 90 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2022
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Feb 16, 2023 · Synced Jul 21, 2026, 5:31 PM EDT
Recruiting Phase 2 Interventional

Addition of Antibiotics to Upfront Treatment Regimen for Colorectal Cancer

NCT06728072
View directory record Official record
Conditions
Colorectal Cancer, CRC
Interventions
Standard of Care Chemotherapy + Metronidazole, ciprofloxacin, aspirin
Drug
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
97 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2035
U.S. locations
2
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Jul 21, 2026, 5:31 PM EDT
Terminated Phase 4 Interventional Results available

Aspirin as a Novel Anti-Inflammatory Modality in the Fontan Patients

NCT02966002
View directory record Official record
Conditions
Fontan Procedure
Interventions
Aspirin
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 17, 2018 · Synced Jul 21, 2026, 5:31 PM EDT
Terminated Phase 4 Interventional Results available

Prochlorperazine Versus Acetaminophen, Aspirin, and Caffeine for the Treatment of Acute Migraine

NCT01629329
View directory record Official record
Conditions
Migraine Headaches
Interventions
Aspirin, Acetaminophen, Caffeine pills, Prochlorperazine 10mg
Drug
Lead sponsor
Albert Einstein Healthcare Network
Other
Eligibility
18 Years to 65 Years
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 17, 2020 · Synced Jul 21, 2026, 5:31 PM EDT
Recruiting Phase 4 Interventional

Treatment With Aspirin After Preeclampsia: TAP Trial

NCT06281665
View directory record Official record
Conditions
Hypertensive Disorder of Pregnancy, Pre-Eclampsia, Hypertension, Eclampsia, Gestational Hypertension, Cardiovascular Diseases, Toxemia, Pregnancy Complications, Vascular Diseases, Hypertension, Pregnancy Induced, Hypertension;Pre-Eclamptic
Interventions
Low-dose aspirin, Placebo
Drug
Lead sponsor
Malamo Countouris
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Jul 21, 2026, 5:31 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Aspirin in Reducing Events in the Elderly-Extension (ASPREE-XT)

NCT07224347
View directory record Official record
Conditions
Functional Disability, Dementia, Heart Disease, Stroke, Cancer, Bleeding, Depression, Frailty
Interventions
Not listed
Lead sponsor
Anne Murray
Other
Eligibility
65 Years and older
Enrollment
19,114 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2026
U.S. locations
22
States / cities
Birmingham, Alabama • Washington D.C., District of Columbia • Atlanta, Georgia + 18 more
Source: ClinicalTrials.gov public record
Updated Nov 3, 2025 · Synced Jul 21, 2026, 5:31 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

To Compare the Gastroprotective Effects and Pharmacokinetic Profile of PA Versus Enteric-Coated Aspirin

NCT00442052
View directory record Official record
Conditions
Healthy
Interventions
aspirin, omeprazole
Drug
Lead sponsor
POZEN
Industry
Eligibility
50 Years to 75 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 28, 2007 · Synced Jul 21, 2026, 5:31 PM EDT
Completed Not applicable Interventional

Improving Aspirin Use in Diabetes: A Cluster Randomized Trial

NCT00262977
View directory record Official record
Conditions
Diabetes Mellitus
Interventions
Electronic prompt plus patient-directed intervention, Electronic prompt to clinician to prescribe aspirin
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
40 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 21, 2010 · Synced Jul 21, 2026, 5:31 PM EDT
Not listed Phase 1Phase 2 Interventional Accepts healthy volunteers

Reversal of Aspirin Antiplatelet Therapy With Cold Stored Platelets

NCT05111028
View directory record Official record
Conditions
Reversal of Platelet Aggregation Inhibitors
Interventions
Autologous Room Temperature stored Platelet transfusion, Autologous Cold Stored Platelet transfusion
Biological
Lead sponsor
Bloodworks
Other
Eligibility
18 Years to 59 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Nov 7, 2021 · Synced Jul 21, 2026, 5:31 PM EDT
Completed No phase listed Observational

Antenatal Platelet Response On Aspirin and Correlation With HDP (Hypertensive Disorders of Pregnancy)

NCT04295850
View directory record Official record
Conditions
Preeclampsia
Interventions
Aspirin 81 mg
Drug
Lead sponsor
Thomas Jefferson University
Other
Eligibility
10 Years to 60 Years · Female only
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 1, 2025 · Synced Jul 21, 2026, 5:31 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Effect of Aspirin Pretreatment or Slow Dose Titration on Flushing and Gastrointestinal Events in Healthy Volunteers Receiving Delayed-release Dimethyl Fumarate

NCT01568112
View directory record Official record
Conditions
Healthy
Interventions
BG00012 (dimethyl fumarate), BG00012 placebo, ASA, ASA placebo
Drug
Lead sponsor
Biogen
Industry
Eligibility
25 Years to 55 Years
Enrollment
173 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 12, 2016 · Synced Jul 21, 2026, 5:31 PM EDT
Completed Phase 3 Interventional

Placebo and Active Controlled Study to Assess Efficacy and Tolerability of Aspirin Plus Pseudoephedrine

NCT01062360
View directory record Official record
Conditions
Common Cold, Pharyngitis
Interventions
Acetylsalicylic Acid (Aspirin Complex, BAYE4465) + Pseudoephedrine, Acetylsalicylic Acid (Aspirin, BAYE4465), Pseudoephedrine, Placebo
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 65 Years
Enrollment
1,016 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 31, 2017 · Synced Jul 21, 2026, 5:31 PM EDT