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Showing 1–24 of 852 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Attention-deficit Hyperactivity Disorder (ADHD) Clear all
Completed Phase 1Phase 2 Interventional Results available

The Reinforcing Mechanisms of Smoking in Adult ADHD

NCT00573859
View directory record Official record
Conditions
ADHD
Interventions
ADHD medication, Placebo
Drug
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 45 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated Nov 6, 2011 · Synced Jul 22, 2026, 2:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Food Additives Effects on EEG Profiles in College Students With ADHD

NCT03342469
View directory record Official record
Conditions
Attention Deficit Hyperactivity Disorder
Interventions
Artificial Food Coloring, Placebo
Other
Lead sponsor
American University
Other
Eligibility
18 Years to 24 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Sep 23, 2020 · Synced Jul 22, 2026, 2:20 PM EDT
Completed Not applicable Interventional

Testing "SupporT for ADHD and Related Treatment" (START) for Families of Children With ADHD

NCT05796427
View directory record Official record
Conditions
ADHD
Interventions
SupporT for ADHD and Related Treatment
Behavioral
Lead sponsor
Ann & Robert H Lurie Children's Hospital of Chicago
Other
Eligibility
6 Years to 12 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Jul 22, 2026, 2:20 PM EDT
Completed Phase 4 Interventional

A Functional Outcomes Study With Atomoxetine-Hydrochloride and Placebo in Adults With Attention-Deficit/Hyperactivity Disorder

NCT00190931
View directory record Official record
Conditions
Attention Deficit Disorder With Hyperactivity
Interventions
Atomoxetine Hydrochloride, placebo
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 49 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 23, 2006 · Synced Jul 22, 2026, 2:20 PM EDT
Completed Not applicable Interventional Results available

Study of the Effect of Individualizing Daytrana Wear-times on Sleep in Children With ADHD

NCT00989950
View directory record Official record
Conditions
Attention Deficit Hyperactivity Disorder, INSOMNIA
Interventions
Daytrana
Drug
Lead sponsor
Cox Health Systems
Other
Eligibility
6 Years to 12 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Springfield, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 18, 2012 · Synced Jul 22, 2026, 2:20 PM EDT
Completed Phase 4 Interventional

Medication Strategies for Treating Aggressive Behavior in Youth With Attention Deficit Hyperactivity Disorder

NCT00228046
View directory record Official record
Conditions
Attention Deficit Disorder With Hyperactivity, Conduct Disorder, Oppositional Defiant Disorder
Interventions
Divalproex Sodium, Methylphenidate, Dextroamphetamine, Mixed Amphetamine Salts, Family Counseling, Behavior Management Training with Parents
Drug · Behavioral
Lead sponsor
Stony Brook University
Other
Eligibility
6 Years to 14 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
2
States / cities
New Hyde Park, New York • Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated Oct 30, 2013 · Synced Jul 22, 2026, 2:20 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Vitamin D as a Therapeutic Adjunct in the Stimulant Treatment of ADHD

NCT03103750
View directory record Official record
Conditions
ADHD
Interventions
Magnetic Resonance Imaging (MRI), PHNO, calcitriol, Placebo oral capsule, high-resolution research tomography, Dextro Amphetamine
Procedure · Drug · Dietary Supplement
Lead sponsor
Yale University
Other
Eligibility
18 Years to 50 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2023
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 18, 2024 · Synced Jul 22, 2026, 2:20 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Executive Function Training for Children and Adolescents

NCT07147894
View directory record Official record
Conditions
Cognitive Change
Interventions
Nongamified N-back training, Gamified N-back training, Multiple Domain Training, Coaching Session
Behavioral
Lead sponsor
Northeastern University
Other
Eligibility
12 Years to 17 Years
Enrollment
780 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 22, 2025 · Synced Jul 22, 2026, 2:20 PM EDT
Completed Phase 2 Interventional

A Study to Evaluate the Efficacy and Safety of SPN-810 as Adjunctive Therapy in Children With Impulsive Aggression Comorbid With Attention-Deficit/Hyperactivity Disorder (ADHD)

NCT01364662
View directory record Official record
Conditions
Impulsive Aggression Comorbid With ADHD
Interventions
SPN-810, Placebo
Drug
Lead sponsor
Supernus Pharmaceuticals, Inc.
Industry
Eligibility
6 Years to 12 Years
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
27
States / cities
Dothan, Alabama • Los Angeles, California • Santa Ana, California + 24 more
Source: ClinicalTrials.gov public record
Updated Feb 10, 2021 · Synced Jul 22, 2026, 2:20 PM EDT
Completed Phase 1 Interventional

Mental Health Services for Foster and Adopted Children

NCT00056303
View directory record Official record
Conditions
Problem Behaviors, Attention Deficit Hyperactivity Disorder, Depression
Interventions
Attachment and Biobehavioral Catch-up, Developmental Education for Families
Behavioral
Lead sponsor
University of Delaware
Other
Eligibility
20 Months to 36 Months
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2016
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Dec 19, 2016 · Synced Jul 22, 2026, 2:20 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Safety and Efficacy of GTS21 in Adults With Attention-deficit Hyperactivity Disorder

NCT00419445
View directory record Official record
Conditions
Attention Deficit Hyperactivity Disorder
Interventions
GTS21/Placebo
Drug
Lead sponsor
CoMentis
Industry
Eligibility
18 Years to 55 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 9, 2010 · Synced Jul 22, 2026, 2:20 PM EDT
Completed Phase 3 Interventional Results available

Safety and Tolerability Study of SPD489 in Preschool Children Aged 4-5 Years, Diagnosed With Attention-deficit/Hyperactivity Disorder

NCT02466386
View directory record Official record
Conditions
Attention Deficit Hyperactivity Disorder (ADHD)
Interventions
SPD489
Drug
Lead sponsor
Shire
Industry
Eligibility
4 Years to 5 Years
Enrollment
113 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
50
States / cities
Dothan, Alabama • Little Rock, Arkansas • Imperial, California + 41 more
Source: ClinicalTrials.gov public record
Updated Mar 4, 2021 · Synced Jul 22, 2026, 2:20 PM EDT
Completed Not applicable Interventional Results available

Psychosocial Treatment for Attention Deficit Hyperactivity Disorder in Adults

NCT00278473
View directory record Official record
Conditions
Attention Deficit Disorder With Hyperactivity
Interventions
Meta-Cognitive Therapy, Supportive Therapy
Behavioral
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 65 Years
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 3, 2017 · Synced Jul 22, 2026, 2:20 PM EDT
Recruiting Not applicable Interventional

Improving ADHD Teen Driving - Virtual Reality

NCT06960980
View directory record Official record
Conditions
Attention Deficit Hyperactivity Disorder (ADHD)
Interventions
FOCAL+, VR-FOCAL+
Behavioral
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
16 Years to 19 Years
Enrollment
204 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 22, 2026 · Synced Jul 22, 2026, 2:20 PM EDT
Terminated Phase 3 Interventional Results available

Treatment of Impulsive Aggression (IA) in Adolescent With ADHD in Conjunction With Standard ADHD Treatment

NCT03597503
View directory record Official record
Conditions
Attention Deficit Hyperactivity Disorder
Interventions
SPN-810, Placebo
Drug
Lead sponsor
Supernus Pharmaceuticals, Inc.
Industry
Eligibility
12 Years to 17 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
38
States / cities
Culver City, California • Orange, California • Colorado Springs, Colorado + 33 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2024 · Synced Jul 22, 2026, 2:20 PM EDT
Completed No phase listed Observational

National Child Traumatic Stress Network (NCTSN) Quality Improvement Initiative Database

NCT01591694
View directory record Official record
Conditions
Post Traumatic Stress Disorder, Anxiety, Depression, Conduct Disorder, ADHD
Interventions
Not listed
Lead sponsor
Hugo W. Moser Research Institute at Kennedy Krieger, Inc.
Other
Eligibility
2 Years to 89 Years
Enrollment
4,193 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 5, 2018 · Synced Jul 22, 2026, 2:20 PM EDT
Not listed No phase listed Observational

Screening Protocol for Adults With ADHD

NCT00592254
View directory record Official record
Conditions
ADHD
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 55 Years
Enrollment
3,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 17, 2022 · Synced Jul 22, 2026, 2:20 PM EDT
Completed Not applicable Interventional

Improving Attention Deficit Hyperactivity Disorder Treatment Adherence and Outcome in Primary Care Settings

NCT00179894
View directory record Official record
Conditions
Attention Deficit Disorder With Hyperactivity
Interventions
Physician training
Behavioral
Lead sponsor
Ann & Robert H Lurie Children's Hospital of Chicago
Other
Eligibility
6 Years to 11 Years
Enrollment
270 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2009
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 16, 2015 · Synced Jul 22, 2026, 2:20 PM EDT
Recruiting Not applicable Interventional

Central Executive Training and Parent Training for ADHD

NCT05492422
View directory record Official record
Conditions
ADHD
Interventions
Central Executive Training (CET), Behavioral Parent Training (BPT)
Device · Behavioral
Lead sponsor
Florida State University
Other
Eligibility
8 Years to 12 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Jul 22, 2026, 2:20 PM EDT
Completed Phase 4 Interventional Results available

An Open-Label Study of Naltrexone in Adults With Attention Deficit Hyperactivity Disorder.

NCT01873729
View directory record Official record
Conditions
Attention Deficit Hyperactivity Disorder
Interventions
Naltrexone
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 55 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 12, 2017 · Synced Jul 22, 2026, 2:20 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

The Effects of Cannabigerol on Attention-Deficit/Hyperactivity Disorder

NCT06115603
View directory record Official record
Conditions
Attention-Deficit/Hyperactivity Disorder
Interventions
Cannabigerol, Placebo
Drug · Other
Lead sponsor
University of Arkansas, Fayetteville
Other
Eligibility
18 Years to 55 Years
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Fayetteville, Arkansas
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Jul 22, 2026, 2:20 PM EDT
Completed Not applicable Interventional

ACTIVATE: A Computerized Training Program for Children With ADHD

NCT02562469
View directory record Official record
Conditions
ADHD
Interventions
ACTIVATE
Other
Lead sponsor
New York University
Other
Eligibility
7 Years to 11 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 1, 2022 · Synced Jul 22, 2026, 2:20 PM EDT
Completed Not applicable Interventional

Executive Function/Metacognitive Training for At-Risk Preschoolers

NCT01675869
View directory record Official record
Conditions
Attention Deficit Hyperactivity Disorder
Interventions
Executive Training of Attention and Metacognition (ETAM), Attention Control
Behavioral
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
3 Years to 5 Years
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 2, 2017 · Synced Jul 22, 2026, 2:20 PM EDT
Suspended Not applicable Interventional

An Study of Transcranial Direct Current Stimulation in Adults With ADHD

NCT02640651
View directory record Official record
Conditions
Attention Deficit Hyperactivity Disorder
Interventions
DC-Stimulator (PLUS version)
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 14, 2019 · Synced Jul 22, 2026, 2:20 PM EDT