Recruiting Studies
Advanced SearchData: ClinicalTrials.gov · Source of record for eligibility and locations
Top Cities for ADHD Clinical Trials
ADHD clinical trials are recruiting across 197 cities. Here are the cities with the most active studies:
ADHD Trial Phases
75 research organizations are sponsoring adhd trials.
About ADHD
Attention deficit hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by inattention, hyperactivity, and impulsivity that interferes with functioning. It affects both children and adults. Treatment includes behavioral therapy, stimulant and non-stimulant medications, and educational support.
Clinical trials are advancing new treatments for adhd. Currently, 100 studies are recruiting a combined 70,629 participants across the United States. Research is being conducted by 75 organizations including National Cancer Institute (NCI), Photocure, Convergent Genomics, Inc. and 72 others.
2026 ADHD Research Landscape
As of July 2026, the adhd clinical trial landscape includes 100 actively recruiting studies across 197 cities in the United States. These studies are collectively seeking 70,629 participants, with an average enrollment target of 706 per study.
The research spans multiple phases of development: 26 studies are in NA, 18 studies are in PHASE2, 18 studies are in PHASE3, 11 studies are in PHASE4, 8 studies are in PHASE1, 1 study is in EARLY_PHASE1. The presence of Phase 3 trials indicates that some adhd treatments are in late-stage testing and may be approaching regulatory review.
Research is being led by 75 different organizations, including National Cancer Institute (NCI), Photocure, Convergent Genomics, Inc., Mayo Clinic, Guardant Health, Inc., and 70 others. The large number of sponsors reflects significant research interest and investment in adhd treatment advancement.
Geographically, adhd trials are most concentrated in Los Angeles, California (21 trials); Chicago, Illinois (13 trials); Little Rock, Arkansas (12 trials); San Diego, California (11 trials); Washington D.C., District of Columbia (10 trials) and 7 other cities.
Featured ADHD Studies
Highlighted recruiting studies for adhd, selected by enrollment size and research scope.
The Vanguard Study: Testing a New Way to Screen for Cancer
The Vanguard Study is a feasibility study to explore several aspects of evaluating multi-cancer detection (MCD) tests in a future definitive randomized controlled trial. An MCD test measures markers in the blood in order to screen for multiple cancers simultaneously. There is a need to understand how MCDs may work as cancer screening tools. The goal of cancer screening is to reduce the burden of c...
Blue Light Cystoscopy With Cysview® Registry
Registry study to gather more information on the current use of Blue Light Cystoscopy with Cysview (BLCC) in urologists' practices.
Specimen Collection for Validation of UroAmp: A Next Generation Sequencing Platform for Detection and Surveillance of Bladder Cancer
This is a prospective, multicenter observational study designed to collect urine and tumor biospecimens and associated clinical data from patients undergoing evaluation, treatment, or surveillance for urothelial carcinoma.
Frequently Asked Questions About ADHD Clinical Trials
Are there adhd clinical trials near me?
Yes, there are 100 adhd clinical trials currently recruiting across 197+ cities in the United States, including Los Angeles, California; Chicago, Illinois; Little Rock, Arkansas. Browse the studies above to find one at a location convenient for you.
How do I join a adhd clinical trial?
To join a adhd clinical trial: 1) Browse the available studies on this page, 2) Click on a study that interests you, 3) Check the study locations to find a site near you, 4) Review the eligibility criteria, and 5) Contact the study site or complete the eligibility form. The process is free and you can withdraw at any time.
Are adhd clinical trials free?
Yes, participation in adhd clinical trials is free. Study-related treatments, medical tests, and doctor visits are provided at no cost to participants. Many studies also offer compensation for your time and travel expenses.
What types of adhd treatments are being studied?
Current adhd clinical trials are testing a range of approaches across NA (26 studies), PHASE2 (18 studies), PHASE3 (18 studies), PHASE4 (11 studies), PHASE1 (8 studies), EARLY_PHASE1 (1 study). These include new drugs, combination therapies, medical devices, and other interventions sponsored by 75 research organizations.
Is it safe to participate in adhd clinical trials?
Clinical trials are carefully regulated by the FDA and institutional review boards (IRBs). All trials must follow strict safety protocols, and participants receive close medical monitoring throughout the study. You can withdraw from a trial at any time without penalty.
Data updated July 20, 2026 from ClinicalTrials.gov
About This Data
Data: ClinicalTrials.gov · Source of record for eligibility and locations
Clinical trial information on this page is sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health (NIH) and National Library of Medicine (NLM). Study data is refreshed every hour to ensure accuracy.
Medical Disclaimer: The information provided on this page is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider before making decisions about clinical trial participation or changes to your treatment plan.
Page reviewed by the HelloStudys Research Team · Last updated July 20, 2026 · Data from ClinicalTrials.gov