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36 Acetylsalicylic Acid Trials Near You

Power is an online platform that helps thousands of patients discover FDA-reviewed trials every day. Every trial we feature meets safety and ethical standards, giving patients an easy way to discover promising new treatments in the research stage.

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No Placebo
Highly Paid
Stay on Current Meds
Pivotal Trials (Near Approval)
Breakthrough Medication
The primary objective of this study is to evaluate the effectiveness (prevention of thromboembolic events) and safety (major bleeding) of adding oral anticoagulation (OAC) to background antiplatelet therapy in patients who develop new-onset post-operative atrial fibrillation (POAF) after isolated coronary artery bypass graft (CABG) surgery. All patients with a qualifying POAF event, who decline randomization, will be offered the option of enrollment in a parallel registry that captures their baseline risk profile and their treatment strategy in terms of anticoagulants or antiplatelets received. These patients will also be asked to fill out a brief decliner survey.
No Placebo Group
Pivotal Trial (Near Approval)

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 3

3200 Participants Needed

Primary Aim: To determine if apixaban is superior to aspirin for prevention of the composite outcome of any stroke (hemorrhagic or ischemic) or death from any cause in patients with recent ICH and atrial fibrillation (AF). Secondary Aim: To determine if apixaban, compared with aspirin, results in better functional outcomes as measured by the modified Rankin Scale.
Pivotal Trial (Near Approval)

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 3

700 Participants Needed

REMAP-CAP is a randomised, embedded, multifactorial, adaptive platform trial for community-acquired pneumonia. The purpose of this study is to evaluate the effect of a range of interventions to improve outcome of patients admitted to intensive care with community-acquired pneumonia. In addition, REMAP-CAP provides and adaptive research platform for evaluation of multiple treatment modalities in the event of a respiratory pandemic such as COVID-19. REMAP-COVID is a sub-platform of REMAP-CAP that evaluates treatments specific to COVID-19 in the United States of America.
No Placebo Group
Pivotal Trial (Near Approval)

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 3

20000 Participants Needed

The overall goal of this large, pragmatic, comparative effectiveness trial is to test the hypothesis that among at-risk individuals, 162 mg/day aspirin is superior to 81 mg/day in preventing Hypertensive disorders of pregnancy (HDP), and that there are multiple factors associated with adherence with aspirin therapy that will be important to identify to enable optimal implementation of study findings and population-level benefits.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 4
Age:14 - 35
Sex:Female

10742 Participants Needed

This trial will obtain biomarker data on the possible preventive effects of omeprazole and low-dose aspirin in colorectal tissue. Persons who have had 5 or more adenomas, 5 or more serrated polyps, or an incompletely removed adenoma or serrated polyp in the colon or rectum are potentially eligible. Before participating in the study, study staff will explain the study and review the consent form. If you are interested and provide consent, study staff will then confirm your eligibility. Once enrolled, participants will take two 20 mg omeprazole tablets and two 81 mg aspirin tablets each day before the first meal each day for 25-45 days. The study does involve biopsies of the colorectal tissue before and after taking the study medications. The biopsies are samples of tissue, about the size of a grain of rice, that will be taken from the colon or rectum before and after taking the study medications. This is done during a usual, clinical colonoscopy exam and during one more limited exam, called flexible sigmoidoscopy, that is done for the research study. The flexible sigmoidoscopy requires less preparation. Which procedure comes first depends on what fits best with each participant's clinical scenario. Biopsies of both normal mucosa and polyps (if possible) are collected.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Early Phase 1

24 Participants Needed

The Ischemia-IMT (Ischemia-Intensive Medical Treatment Reduces Events in Women with Non-Obstructive CAD), subtitle: Women's Ischemia Trial to Reduce Events in Non-Obstructive CAD (WARRIOR) trial is a multicenter, prospective, randomized, blinded outcome evaluation (PROBE design) evaluating intensive statin/ACE-I (or ARB)/aspirin treatment (IMT) vs. usual care (UC) in 4,422 symptomatic women patients with symptoms and/or signs of ischemia but no obstructive CAD. The hypothesis is that IMT will reduce major adverse coronary events (MACE) 20% vs. UC. The primary outcome is first occurrence of MACE as death, nonfatal MI, nonfatal stroke/transient ischemic attack (TIA) or hospitalization for heart failure or angina. Secondary outcomes include quality of life, time to "return to duty"/work, health resource consumption, angina, cardiovascular (CV) death and primary outcome components. Events will be adjudicated by an experienced Clinical Events Committee (CEC). Follow-up will be 3-years using 50 sites: primarily VA and Active Duty Military Hospitals/Clinics and a National Patient-Centered Clinical Research Network (PCORnet) clinical data research network (CDRN)(OneFlorida Consortium). This study is being conducted to determine whether intensive medication treatment to modify risk factors and vascular function in women patients with coronary arteries showing no flow limit obstruction but with cardiac symptoms (i.e., chest pain, shortness of breath) will reduce the patient's likelihood of dying, having a heart attack, stroke/TIA or being hospitalized for cardiac reasons. The results will provide evidence data necessary to inform future guidelines regarding how best to treat this growing population of patients, and ultimately improve the patient's cardiac health and quality of life and reduce health-care costs.
No Placebo Group

Trial Details

Trial Status:Active Not Recruiting
Trial Phase:Phase 4
Sex:Female

2476 Participants Needed

Aspirin and low molecular weight heparin (LMWH) are both commonly employed pharmacologic methods of venous thromboembolism (VTE) prophylaxis after orthopaedic surgery. Data comparing these two methods of VTE prophylaxis in patients undergoing pelvic/lower extremity orthopaedic surgery for malignancy are lacking, however, as compared to the data and guidelines present for VTE chemoprophylaxis after joint arthroplasty and hip fracture surgery. In this clinical trial, our specific aim is to compare the post operative incidence of VTE between patients receiving aspirin and LMWH after pelvic/lower extremity orthopaedic oncology procedures.
No Placebo Group

Trial Details

Trial Status:Enrolling By Invitation
Trial Phase:Phase 4

2868 Participants Needed

Low-Dose Aspirin for Preeclampsia

Pittsburgh, Pennsylvania
The objective of this research project is to conduct a single-site pilot trial to assess the feasibility and effect of low-dose aspirin to augment vascular recovery in the immediate postpartum period after preeclampsia through two specific aims: 1) to pilot test the feasibility of conducting a randomized controlled trial of postpartum low dose aspirin vs. placebo, and 2) to assess the effect of postpartum aspirin on endothelial function and blood pressure. Our central hypothesis is that postpartum administration of low-dose aspirin following preeclampsia will be feasible, improve endothelial function, and lower BP at 6 months postpartum. Subjects will undergo 3 study visits involving BP measurements, blood draws, questionnaires, and/or microiontophoresis. Up to 60 adult subjects will be enrolled at Magee-Women's Hospital.

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 4
Age:18 - 55
Sex:Female

60 Participants Needed

This phase II trial tests whether low-dose aspirin can affect markers of inflammation in postpartum (after childbirth) women planning to have a breast biopsy. Chronic inflammation may increase the risk of postpartum related breast cancer. Low-dose aspirin is a non-steroidal anti-inflammatory drug. Giving low-dose aspirin may affect markers of inflammation in blood and tissue and may prevent postpartum related breast cancer.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 2
Age:18 - 45
Sex:Female

100 Participants Needed

RADICAL PC1 is a prospective cohort study of men with a new diagnosis of prostate cancer. RADICAL PC2 is a randomized, controlled trial of a systematic approach to modifying cardiovascular and lifestyle risk factors in men with a new diagnosis of prostate cancer.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased
Age:45+
Sex:Male

6000 Participants Needed

Aspirin for Preeclampsia

Chicago, Illinois
This is a single-center, double-blind, randomized, placebo-controlled clinical trial. Peripartum and postpartum Activin A are significantly elevated in women with preeclampsia. Our hypothesis is that elevated Activin A levels reflect a remediable signal and that reducing postpartum Activin A levels with aspirin therapy will improve (GLS) in preeclamptic patients.

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 4
Age:18 - 45
Sex:Female

180 Participants Needed

Aspirin for Ovarian Cancer

Charlottesville, Virginia
The purpose of the study is to evaluate the effectiveness of aspirin with neoadjuvant chemotherapy for decreasing markers of immune suppression in the tumor at interval debulking surgery, in women with diagnosed ovarian, fallopian tube, or peritoneal carcinoma

Trial Details

Trial Status:Recruiting
Trial Phase:Early Phase 1
Sex:Female

100 Participants Needed

Aspirin for Endometriosis

University Park, Pennsylvania
The goal of this clinical trial is to compare neurovascular regulation in women with endometriosis and healthy women. The main questions it aims to answer are: * Do women with endometriosis have greater blood pressure and pain responses to a stimulus than healthy women? * Do women with endometriosis have greater platelet activity than healthy women? Participants will take aspirin and/or placebo and will: * perform hand grip exercise and cold pressor tests * undergo iontophoresis and blood draw Researchers will compare women with and without endometriosis to see if there is a difference in neurovascular regulation.

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 4
Age:18 - 45
Sex:Female

96 Participants Needed

Aspirin for Pre-eclampsia Prevention

Charlottesville, Virginia
This will be a randomized, open-label, controlled trial of patients at high risk of developing preeclampsia examining 81 mg/day vs 162mg/day daily acetylsalicylic acid (ASA) use. Based on screening results, patients will be randomized as outlined below into one of four groups. The proposed study is a pilot to determine if the higher dose of ASA has positive impacts on measures that predict preeclampsia, compared to the lower dose. If positive findings, data from this study could be used to develop a larger trial powered to determine if the higher ASA dose can improve clinical outcomes.
No Placebo Group

Trial Details

Trial Status:Active Not Recruiting
Trial Phase:Phase 4
Age:18 - 45
Sex:Female

150 Participants Needed

This randomized phase II trial studies the safety of and how well aspirin works in preventing Barrett's esophagus from returning after it has been successfully eliminated by radiofrequency ablation. Studying samples of tissue from patients with Barrett's esophagus for the levels of a specific protein that is linked to developing Barrett's esophagus may help doctors learn whether aspirin can prevent it from returning after it has been successfully treated.

Trial Details

Trial Status:Active Not Recruiting
Trial Phase:Phase 2

21 Participants Needed

This study evaluates critical environmental limits (temperature and humidity) above which older adults are unable to effectively thermoregulate. Participants will exercise in a series of different environmental conditions to identify combinations of temperature and humidity above which age-related physiological changes cause uncompensable heat stress, resulting in increased risk of heat illness.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Early Phase 1

190 Participants Needed

This phase II trial studies how well enteric-coated (EC) aspirin and rintatolimod with or without interferon-alpha 2b work in treating patients with prostate cancer before surgery. EC Aspirin may help to keep the prostate cancer from coming back. Rintatolimod may stimulate the immune system and interfere with the ability of tumor cells to grow and spread. Interferon-alpha 2b may improve the body's natural response to infections and may slow tumor growth. It is not yet known how well rintatolimod, EC aspirin, and interferon-alpha 2b work in treating patients with prostate cancer undergoing surgery.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 2
Sex:Male

30 Participants Needed

Cardiac allograft vasculopathy is a common complication affecting heart transplant patients. This condition causes narrowing of the heart arteries leading to graft dysfunction. The research team is investigating whether early antiplatelet therapy post heart transplant can prevent the development of CAV. This study will determine the feasibility of a large multicenter randomized placebo-controlled trial to answer this question.
Pivotal Trial (Near Approval)

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 3

135 Participants Needed

While ASA is not a cancer medication, research suggests that taking ASA reduces the probability of getting many types of cancer because of its anti-inflammatory action. Inflammation in the ovaries during ovulation is thought to contribute to the development of ovarian cancer, and, because ASA is an anti-inflammatory medication, it may help to prevent it.

Trial Details

Trial Status:Active Not Recruiting
Trial Phase:Phase 2
Sex:Female

117 Participants Needed

The goal of the PARTUM trial is to determine if taking low-dose aspirin daily for 6 weeks after delivery is similar (non-inferior) to usual care low-molecular-weight heparin injections to prevent venous thromboembolism (VTE: blood clots in the legs or lungs) for postpartum individuals with VTE risk factors.
No Placebo Group
Pivotal Trial (Near Approval)

Trial Details

Trial Status:Not Yet Recruiting
Trial Phase:Phase 3
Sex:Female

8805 Participants Needed

Why Other Patients Applied

"As a healthy volunteer, I like to participate in as many trials as I'm able to. It's a good way to help research and earn money."

IZ
Healthy Volunteer PatientAge: 38

"I've been struggling with ADHD and anxiety since I was 9 years old. I'm currently 30. I really don't like how numb the medications make me feel. And especially now, that I've lost my grandma and my aunt 8 days apart, my anxiety has been even worse. So I'm trying to find something new."

FF
ADHD PatientAge: 31

"I changed my diet in 2020 and I’ve lost 95 pounds from my highest weight (283). I am 5’3”, female, and now 188. I still have a 33 BMI. I've been doing research on alternative approaches to continue my progress, which brought me here to consider clinical trials."

WR
Obesity PatientAge: 58

"I was diagnosed with stage 4 pancreatic cancer three months ago, metastatic to my liver, and I have been receiving and responding well to chemotherapy. My blood work revealed that my tumor markers have gone from 2600 in the beginning to 173 as of now, even with the delay in treatment, they are not going up. CT Scans reveal they have been shrinking as well. However, chemo is seriously deteriorating my body. I have 4 more treatments to go in this 12 treatment cycle. I am just interested in learning about my other options, if any are available to me."

ID
Pancreatic Cancer PatientAge: 40

"My orthopedist recommended a half replacement of my right knee. I have had both hips replaced. Currently have arthritis in knee, shoulder, and thumb. I want to avoid surgery, and I'm open-minded about trying a trial before using surgery as a last resort."

HZ
Arthritis PatientAge: 78
This trial is testing a drug that prevents blood clots in patients with poor blood flow in their arteries. The drug works by blocking a protein that helps blood to clot, which may improve their symptoms. When combined with aspirin, it has shown significant benefits in reducing deaths and heart-related problems in these patients.

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 4
Age:40+

75 Participants Needed

This phase IIa trial studies how well aspirin works in preventing colorectal cancer in patients with colorectal adenoma. Aspirin may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

Trial Details

Trial Status:Active Not Recruiting
Trial Phase:Phase 2

81 Participants Needed

This trial uses niacin and aspirin to study their effects on a body chemical in healthy volunteers. Researchers measure chemicals in urine and blood to understand how this chemical is broken down.
No Placebo Group

Trial Details

Trial Status:Enrolling By Invitation
Trial Phase:Early Phase 1
Age:18 - 65

10 Participants Needed

Aspirin Dosing for COPD

Baltimore, Maryland
Chronic obstructive pulmonary disease (COPD) is the fourth leading cause of death in the United States. Current treatments for COPD focus on inhaler therapies that do not address manifestations of the disease on other organ systems. Platelets, which are small blood cells that typically help with clotting, are also involved in generalized inflammation and dysfunctionality of immune cells when these cells become activated. Activated platelets have long been known to play a role in the development of cardiovascular disease. However, there is recent evidence that activated platelets may be involved in worse respiratory symptoms in COPD independent of cardiovascular disease. Individuals with COPD who are taking aspirin, which is an antiplatelet agent that blocks activation of platelets, have been shown to have improved respiratory symptoms, fewer COPD flares, and lower mortality. The investigators' ultimate goal is to study whether aspirin use improves respiratory symptoms independent of cardiovascular disease. The investigators are conducting the current pilot trial to determine the optimal dose of aspirin that blocks platelet activation in this population and investigate whether there are any blood or urine tests that can help with understanding response to therapy. The results will inform the design of a larger trial investigating clinical outcomes. The investigators hypothesize that daily low-dose aspirin will not be sufficient to adequately suppress platelet activation and that an aspirin dose of at least 162mg daily will be necessary.
No Placebo Group
Pivotal Trial (Near Approval)

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 3
Age:40 - 80

48 Participants Needed

This is a 2-arm, noncomparative phase 2 trial designed to evaluate treatment outcomes with or without the addition of ciprofloxacin, metronidazole, and aspirin to first-line chemotherapy for patients with stage IV colorectal cancer (CRC).
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 2

97 Participants Needed

The goal of this study is to assess the effect of an electronic health record (EHR) clinical decision support tool, also known as a best practice alert (BPA), on healthcare provider recommendations for low dose aspirin use in a high-risk pregnant patient population. The investigators hypothesize that the implementation of the EHR BPA tool will increase the healthcare provider's recommendation for low dose aspirin compared to current standard care.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased
Sex:Female

640 Participants Needed

The goal of this clinical trial is to investigate the effects of early initiation of double low-dose aspirin in pregnant women. The main questions it aims to answer are: Does this dose and timing of aspirin reduce the risk of pre-eclampsia compared to standard recommendations? Does this dose and timing of aspirin reduce the risk of pregnancy loss compared to standard recommendations? Participants will begin taking at no later than 6 weeks 6 days gestational age, either 162mg of aspirin through delivery or placebo until 12 weeks and then 81mg of aspirin through delivery.
Pivotal Trial (Near Approval)

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 3
Age:18 - 45
Sex:Female

1150 Participants Needed

To determine whether timed administration of aspirin ameliorates the effects of celecoxib on blood pressure.
No Placebo Group

Trial Details

Trial Status:Not Yet Recruiting
Trial Phase:Early Phase 1

60 Participants Needed

This trial is testing whether a cholesterol-lowering drug (atorvastatin) alone or with a pain reliever (aspirin) can reduce colon cancer risk in people with Lynch syndrome. These individuals are at high risk for colon cancer. The study will look at how these drugs affect cell growth, death, and gene changes in the colon. Statins have anticancer activity in various cell types, including colon cancer cells.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Early Phase 1

46 Participants Needed

This trial is testing whether aspirin can slow tumor growth and improve hearing in patients aged 12+ with vestibular schwannomas. Aspirin's anti-inflammatory properties might help achieve these effects. Aspirin has been studied for its potential to protect against certain types of hearing loss and has shown some protective effects in previous studies.

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 2
Age:12+

300 Participants Needed

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Learn More About Trials

Frequently Asked Questions

How much do clinical trials pay?

Each trial will compensate patients a different amount, but $50-100 for each visit is a fairly common range for Phase 2–4 trials (Phase 1 trials often pay substantially more). Further, most trials will cover the costs of a travel to-and-from the clinic.

How do clinical trials work?

After a researcher reviews your profile, they may choose to invite you in to a screening appointment, where they'll determine if you meet 100% of the eligibility requirements. If you do, you'll be sorted into one of the treatment groups, and receive your study drug. For some trials, there is a chance you'll receive a placebo. Across trials 30% of clinical trials have a placebo. Typically, you'll be required to check-in with the clinic every month or so. The average trial length is 12 months.

How do I participate in a study as a "healthy volunteer"?

Not all studies recruit healthy volunteers: usually, Phase 1 studies do. Participating as a healthy volunteer means you will go to a research facility several times over a few days or weeks to receive a dose of either the test treatment or a "placebo," which is a harmless substance that helps researchers compare results. You will have routine tests during these visits, and you'll be compensated for your time and travel, with the number of appointments and details varying by study.

What does the "phase" of a clinical trial mean?

The phase of a trial reveals what stage the drug is in to get approval for a specific condition. Phase 1 trials are the trials to collect safety data in humans. Phase 2 trials are those where the drug has some data showing safety in humans, but where further human data is needed on drug effectiveness. Phase 3 trials are in the final step before approval. The drug already has data showing both safety and effectiveness. As a general rule, Phase 3 trials are more promising than Phase 2, and Phase 2 trials are more promising than phase 1.

Do I need to be insured to participate in a medical study?

Clinical trials are almost always free to participants, and so do not require insurance. The only exception here are trials focused on cancer, because only a small part of the typical treatment plan is actually experimental. For these cancer trials, participants typically need insurance to cover all the non-experimental components.

What are the newest clinical trials?

Most recently, we added Aspirin + Celecoxib for Blood Pressure Control, Postpartum Aspirin for Blood Clots and Antibiotics + Chemotherapy for Colorectal Cancer to the Power online platform.

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