ADHD

88

Review clinical trials related to ADHD. Use filters to narrow results by trial status, phase, treatment, biological sex and sponsor.

Condition / disease
Location
Status: Recruiting

Forward Treatment of Attention Deficit and Hyperactivity Using Solriamfetol (FOCUS-3)

This study is a Phase 3, multi-center, randomized, 6-week, double-blind, placebo-controlled, parallel-group trial to assess the efficacy and safety of solriamfetol in adolescents aged 12 to \<18 years with ADHD.

Participants needed: 468
Trial details
Phase: Phase 3Age: 12-17Biological sex: AllType: InterventionalSponsor: Axsome Therapeutics, Inc.Updated: Oct 13, 2026Locations: 28
Eligibility criteria

Male or female, aged 12 to <18 years. [+2]

Unable to comply with study procedures. [+1]

Status: Recruiting

Forward Treatment of Attention Deficit and Hyperactivity Using Solriamfetol (FOCUS-2)

This study is a Phase 3, multi-center, randomized, 6-week, double-blind, placebo-controlled, parallel-group trial to assess the efficacy and safety of solriamfetol in children aged 6 to \<12 years with ADHD.

Participants needed: 468
Trial details
Phase: Phase 3Age: 6-11Biological sex: AllType: InterventionalSponsor: Axsome Therapeutics, Inc.Updated: Oct 13, 2026Locations: 30
Eligibility criteria

Male or female, aged 6 to <12 years. [+2]

Unable to comply with study procedures. [+1]

Status: Recruiting

Virtual Reality Attention Management

Problems with distraction are widespread in the 21st century, but for people with developmental delays or behavioral challenges they can have more damaging effects. For example, susceptibility to distraction is associated with worse school and social performance, lower high school graduation rates, and increased incidence of serious accidents. The investigators' goal is to improve understanding of distractibility and develop a targeted treatment. The proposed intervention is based on models of habituation, which is a term that means reduced physiological and emotional response to a stimulus (e.g. moving object, or loud noise, etc.) as it is seen repeatedly. The investigators use virtual reality technology to show study participants distracting stimuli repeatedly in a virtual classroom setting, and their hypothesis states that participants will improve attention in the face of distraction by training with this technology intervention. The virtual classroom setting is especially relevant for children who have significant challenges with distractibility, such as children with ADHD. This intervention will likely be effective in helping individuals with other clinical disorders and perhaps the general population as well.

Participants needed: 50
Trial details
Age: 8-12Biological sex: AllType: InterventionalSponsor: University of California, DavisUpdated: Oct 9, 2026Locations: 1
Eligibility criteria

Significant (T score >= 60) ratings of Cognitive Problems/Inattention or DSM Ina... [+3]

Psychosis (by parent report at phone screen), significant depression, autism (15... [+4]

Status: Recruiting

Rural Autistic Individuals - Supporting Expression

This research study investigates how hand gestures can support language comprehension and communication skills of hearing speaking, non-speaking, and/or minimally verbal individuals with Autism Spectrum Disorders (ASD), who are especially disadvantaged by the lack of accessible services in their rural communities. Individuals with other cognitive profiles, including Developmental Language Disorder (DLD), ADHD, Dyslexia, and others are welcome too. The study uses methods of eye tracking and recording of brain activity to understand how hand gestures adapted from signs from American Sign Language, such as \[cry\], can promote successful understanding of words like "cry". The overarching goal is to help families effectively utilize gestures to support communication with their children.

Participants needed: 50
Trial details
Age: 2+Biological sex: AllType: InterventionalSponsor: Montana State UniversityUpdated: Oct 8, 2026Locations: 1
Eligibility criteria

1.1 Confirmed (preferably) or suspected diagnosis of ASD (autism spectrum disord...

1. Poor hearing. 2. Inborn or acquired brain damage.

Status: Recruiting

Role of Theta Frequency Oscillations in Proactive and Reactive Control Processes in Youth With Attention Deficit Hyperactivity Disorder (ADHD) and Obsessive Compulsive Disorder (OCD)

Background: Attention deficit hyperactivity disorder (ADHD) is common in children. It can cause problems with attention and the ability to control actions and impulses. Obsessive compulsive disorder (OCD) is less common in children but not rare. It involves ongoing thoughts, urges, impulses, and repeated behaviors. Researchers want to study differences in brain activity between healthy children, those with ADHD, and those with OCD. Objective: To learn more about how the brain controls thinking and behavior. Eligibility: People aged 10 to 17 years with ADHD, OCD, or neither. Design: Participants will have 3 to 10 clinic visits in up to 1 year. Each visit will last 2 to 3 hours. Three visits are required: Behavioral. Participants will complete a computer task. Their mood, memory, attention, and thinking skills will be tested. EEG. Participants will undergo electroencephalography (EEG) to measure signals in their brain. Small electrodes will be placed on the scalp. A cap will be stretched over the head. Signals will be recorded while participants rest or do tasks on a computer. MRI. Participants will have a magnetic resonance imaging scan (MRI). They will lie on a table that rolls into a tube. The MRI will take pictures of their brain while they do tasks on a computer. Seven more visits are optional. These include 2 more EEG visits and 2 more MRI visits. Three will be magnetoencephalography (MEG) visits: MEG measures small magnetic field changes in the brain. A helmet with sensors will be placed on the head. Brain changes will be recorded while participants rest or do tasks on a computer.

Participants needed: 110
Trial details
Age: 10-17Biological sex: AllType: ObservationalSponsor: National Institute of Mental Health (NIMH)Updated: Oct 5, 2026Locations: 1
Eligibility criteria

Ability to provide informed assent and parent consent [+4]

Non-English Speakers [+6]

Status: Recruiting

Testing a New Method to Improve Informed Consent in Prison Research

Understanding of informed consent is often limited in prison, due to unique challenges faced by detained people. This study will test a modified "teach-to-goal" informed consent process compared to standard procedures. Conducted within a larger study on psychiatric outcomes, it aims to enhance ethical practices for vulnerable populations.

Participants needed: 100
Trial details
Age: 18-65Biological sex: AllType: InterventionalSponsor: Stéphanie BaggioUpdated: Oct 7, 2026Locations: 2
Eligibility criteria

screened in the parent-RCT [+4]

Status: Recruiting

Impact of Parental Emotion Regulation on the Treatment of ADHD

Aim: To examine if parental emotion regulation (ER) moderates the response to parent training interventions. H1: Reduced parental ER capacity will predict diminished efficacy for behavioral parent training to improve negative parenting behavior (NPB) and behavior problems in offspring with ADHD. H2: Increased parental emotional reactivity will predict diminished efficacy for behavioral parent training to improve negative parenting behavior (NPB) and behavior problems in offspring with ADHD.

Participants needed: 65
Trial details
Age: 5-12Biological sex: AllType: InterventionalSponsor: Milton S. Hershey Medical CenterUpdated: Oct 5, 2026Locations: 1
Eligibility criteria

Parent of a child ages 5-12 with ADHD [+1]

Not being the parent of a child ages 5-12 who meets diagnostic criteria for ADHD... [+4]

Status: Not yet recruiting

Delayed-Release, Extended-Release Methylphenidate (Jornay PM) for Adolescents and Young Adults With Attention-Deficit/Hyperactivity Disorder and Cannabis Use Disorder

The goal of this clinical trial is to look at how delayed-release, extended-release methylphenidate (Jornay PM), an FDA-approved medication for the treatment of Attention-Deficit Hyperactivity Disorder (ADHD), works to treat ADHD symptoms in adolescents and young adults (ages 16-26) with ADHD and Cannabis Use Disorder. Researchers will compare delayed-release, extended-release methylphenidate to a placebo (a look-alike substance that contains no drug). Participants will be assigned to take either delayed-release, extended-release methylphenidate or a placebo every night over 12 weeks. Throughout the study, participants will provide urine samples and complete questionnaires about their ADHD symptoms, cannabis use, and other substance use.

Participants needed: 66
Trial details
Phase: Phase 4Age: 16-26Biological sex: AllType: InterventionalSponsor: Massachusetts General HospitalUpdated: Sep 28, 2026Locations: 1
Eligibility criteria

Male or female subjects, 16-26 years of age at the time of consent [+7]

i. hormonal methods, such as birth control pills, patches, injections, vaginal r... [+14]

Status: Recruiting

A Comparison of Group Cognitive Behavioural Therapy (CBT) and Structured Activity Group for Adults With Attention Deficit Hyperactivity Disorder (ADHD)

Many adults with attention deficit hyperactivity disorder (ADHD) experience difficulties with inattention, planning, impulsivity and emotion regulation that impacts work and social life negatively also after treatment with medication. There are various psychological treatments aiming to improve these symptoms, but it is not known if they work or not. The goal of this clinical trial is to evaluate group cognitive behavioural therapy (CBT) for adults with attention deficit hyperactivity disorder (ADHD) in comparison to an active control group consisting of a discussion and activity group. Previous research suggests that group CBT works about equally well as other structured group activities. The main questions the researchers aim to answer are if group CBT work better than activity groups to: * Improve symptoms of ADHD * Improve general mental health and life quality * Improve every-day functioning The researchers also want to learn if group CBT or activity groups work better for some people with ADHD depending on individual characteristics such as * Type of symptoms, age, gender or co-occurring psychiatric diagnoses The comparison is a manualised structured activity group given at the same number of sessions and same group size. All participants will visit our clinics at 14 occasions. They will: * Fill in questionnaires before and after the group intervention, and online after 6, 12 and 24 months * Do an interview with an independent trained clinician about their daily functioning and difficulties related to ADHD symptoms before and after the group intervention, and after 6, 12 and 24 months

Participants needed: 120
Trial details
Age: 18+Biological sex: AllType: InterventionalSponsor: Region StockholmUpdated: Sep 22, 2026Locations: 2
Eligibility criteria

Fulfilling criteria for ADHD [+1]

Ongoing psychosis [+3]

Status: Not yet recruiting

Dynamic Relationships Between Estrogen Fluctuations, Sleep, and Psychiatric Complexity Among Adolescent Females With ADHD

The purpose of the study is to establish the feasibility of collecting estradiol (E2), Garmin-measured sleep, and ecological momentary assessments (EMA) of ADHD and related symptoms (mood, anxiety, executive functioning) across menstrual cycles among 20 peripubertal female adolescents aged 11-15 with ADHD, and to explore links between within-individual E2 variability, sleep, and EMA-derived outcomes.

Participants needed: 30
Trial details
Age: 11-15Biological sex: FemaleType: ObservationalSponsor: Duke UniversityUpdated: Sep 21, 2026Locations: 1
Eligibility criteria

Female; [+4]

Reported psychotic or bipolar disorder, sleep apnea, or restless leg syndrome; [+2]

Status: Recruiting

Benefits of ADHD Treatment in Detained People

Attention deficit hyperactivity disorder (ADHD) is characterized by difficulties paying attention, poor impulse control, and hyperactive behaviors. It is associated with several health and social detrimental outcomes and leads to increased risks of criminality and recidivism. However, to date, ADHD treatment has been neglected in prison. This project will test the efficacy of ADHD treatment using a randomized controlled trial.

Participants needed: 150
Trial details
Phase: Phase 3Age: 18-65Biological sex: AllType: InterventionalSponsor: Stéphanie BaggioUpdated: Sep 21, 2026Locations: 1
Eligibility criteria

age between 18 and 65 [+4]

presence of an acute uncontrolled comorbid psychiatric disorder [+3]

Status: Not yet recruiting

QAIAx (AIhealth4U) - AI Smart Health Cities: Microcity Enclave Program (Quantum AI/AGI Agency a/k/a AI City Hall Project - UPSTO App Nos. 64/074,526, 64/063,557, 64/105,164, 63/903,181, 63/729,428, 64/125,360)

BRIEF SUMMARY A. "What is the purpose of this study?" BACKGROUND. The QAIAx clinical trial (Quantum AI/AGI Public Health Agency), known operationally as the "AI City Hall Project," represents a landmark intergovernmental research initiative examining the viability of AI-governed residential ecosystems for behavioral and mental health intervention. Authorized under 10 U.S.C. 4001 (Defense Sector Research Projects, RDT\&E) and supported by pending USPTO applications (Nos. 64/074,526, 64/063,557, 64/105,164, 63/903,181, 63/729,428, 64/125,360), this non-medicinal program investigates whether quantum AI-managed public administration, AI humanoid robotics, holographic holoportation (AI-119 Kikkeri Holo-Suit / "AI Wat Beam Bot"; AI-119 Vulcan QM-Ware or "Quasi-Mind Ware"), and advanced AGI learning machines can reduce housing and care costs while improving mental health outcomes-particularly for persons with addiction and co-occurring psychiatric disorders. SCOPE \& JURISDICTION. The trial operates across a network of self-contained, geodesic dome-enclosed "Microcities" (1,500-15,000 occupants per site) within an affiliate network of 300 communities, spanning North America, South America, Europe, Africa, Oceania, Asia, and the Middle East. Participating host nations are U.S.-allied member states party to the Status of Forces Agreement (SOFA), the Vienna Convention on Diplomatic Relations, and the Hague Convention, alongside related bilateral treaties with the U.S. government. INTERVENTION \& POPULATION: Eligible adults (18+) reside in these Microcities for up to 36 months. Daily life-including housing, utilities, and healthcare-is administered by the ISAC AI/AGI system and robots with minimal human oversight. CLINICAL TRIAL GOAL(S): The clinical trial program goals are to exemplify a sustainable AGI-managed public administration supported by AI robotics and AGI trans-human and omni-AI machines (e.g., "Q-Men"; "AI-Me"; Beam Bot", "QM-Ware", "AVK Suit") to improve mental health outcomes-especially for those with addiction disorders-and create a financially sustainable model for people on fixed incomes or public assistance. B. "What conditions does the study focus on?" The study focuses on adults with: * Autism spectrum disorders (Asperger's, autism, ADHD, ASD) * Substance use disorders (alcohol, opioids, marijuana, cocaine, MDMA/ecstasy, tobacco/nicotine) * Psychiatric conditions (personality disorders, narcissism, gender dysphoria, eating disorders) * Behavioral addictions (gambling, sex addiction) and related issues (sex offence history). C. "What does the study involve?" Eligible volunteers live in an omni AI-managed Microcity for up to 24 months. The community is housed in a geodesic dome that contains all daily necessities: housing, food, utilities, healthcare, and public services. Daily life is managed by an AI system (ISAC) and AI humanoid robots, with only occasional human oversight. Participants receive free mental-health treatment that may include AI-driven counselling, virtual-reality therapy (holo-suits), and non-invasive digital "attitude inoculation" protocols designed to reduce stress and addiction cravings. All participants also take AI-technology courses as a condition of enrolment. The study does not use any FDA-regulated drug, device, or biologic. \*\*Who can participate?\*\* You may be able to join if you: * Are an adult (18 years or older) * Have a diagnosis of one of the listed mental-health or addiction disorders * Are referred by a licensed health professional (e.g., RN, NP, PhD, MD), a non-profit organization (e.g., 501(c)(3), university, church), or a public agency (e.g., case manager, social worker, parole/probation officer, judge) * Are willing to live in a closed, AI-managed community for up to one year and complete AI educational courses. Participants who are veterans, receive public assistance (e.g., VA disability, SSDI/SSI, Medicaid, Medicare), or are experiencing homelessness may be prioritized. \*\*Where is the study taking place?\*\* The study will be conducted at Microcity sites in the United States and internationally. The first administrative site is in Richmond, Virginia, USA. Additional sites are planned in partner nations, including tribal lands, military installations, and special economic zones. \*\*Who is sponsoring the study?\*\* The study is sponsored by Veterans Recovery Network Inc., a SCDV-owned non-profit organization, in collaboration with AI-119 Vulcan Project Research \& Educational Technology Co. (PRETCO). The study is conducted under U.S. federal research and development authorities (28 U.S.C. §1498; 10 U.S.C. §§§§ 4001, 4021, 4022, and 4023) and is part of a Cooperative Research and Development Agreement (CRADA) with participating segments or RDT\&E programming missions of the United States Defense Department (DoW). This summary describes a planned clinical study. Not all details may be final. Information may change as the study progresses.

Participants needed: 1,000,000
Trial details
Age: 17-99Biological sex: AllType: InterventionalSponsor: Veterans Recovery Network Inc.Updated: Sep 17, 2026Locations: 1
Eligibility criteria

Individuals aged 17 to 99 years old. [+3]

Status: Recruiting

Fidgeting and Attentional and Emotional Regulation in ADHD

This project will study how fidgeting relates to cognitive and emotional functioning in adults with attention-deficit/hyperactivity disorder (ADHD). It will determine, in a laboratory setting, whether movement and access to a "fidget device" providing sensory and motor stimulation can improve cognitive and emotional regulation (including on physiological measures) in adult ADHD. The investigators will also acquire pilot data for machine learning analyses to be used in future, large scale studies to identify gestures and touch characteristics associated with improved cognitive and emotional regulation to see if the data can predict and subsequently develop recommendations to improve performance and emotional control in natural settings (e.g., home, office, college classroom) for adult ADHD.

Participants needed: 109
Trial details
Age: 18-30Biological sex: AllType: InterventionalSponsor: University of California, DavisUpdated: Sep 15, 2026Locations: 1
Eligibility criteria

ADHD [+1]

Currently taking psychoactive medication, with the exception of stimulant medica... [+1]

Status: Not yet recruiting

A Clinical Trial Evaluating Fecal Microbiota Transplantation (FMT) in Adolescents With ADHD

The primary goals of this phase 2 clinical trial are to determine the feasibility, safety, and tolerability of oral Fecal Microbiota Transplantation (FMT) in adolescents (aged 13-17) with Attention-Deficit/Hyperactivity Disorder (ADHD).

Participants needed: 64
Trial details
Phase: Phase 2Age: 13-18Biological sex: AllType: InterventionalSponsor: University of CalgaryUpdated: Sep 10, 2026Locations: 1
Eligibility criteria

Between 13-17 years of age with consent of a legal guardian: Participants should... [+6]

Diagnosis of a Substance Use Disorder within the last 3 months prior to screenin... [+26]

Status: Not yet recruiting

ADHD and Mental Effort

ADHD is a common childhood disorder characterised by difficulties with attention and behaviour. Various cognitive characteristics are associated with ADHD, such as executive and motivational difficulties. Beyond these characteristics, our hypothesis is that children with ADHD may have specific strategies for allocating mental effort, influenced by motivational and metacognitive factors Our study assesses these dimensions using a behavioural task and a computational model in children with ADHD, both with and without treatment. It aims to identify individual cognitive profiles correlated with clinical characteristics. A better understanding of the cognitive mechanisms involved in ADHD would enable the development of personalised management of the disorder.

Participants needed: 80
Trial details
Age: 7-18Biological sex: AllType: ObservationalSponsor: Assistance Publique - Hôpitaux de ParisUpdated: Sep 10, 2026Locations: 1
Eligibility criteria

Patients diagnosed with ADHD according to the DSM-5 criteria. [+4]

Presence of ASD or an intellectual disability. [+4]

Status: Not yet recruiting

Personalising ADHD Medication Treatment for Children and Young People

Attention deficit hyperactivity disorder (ADHD) is a common condition that affects children's behaviour, attention and activity levels. Medicines can be an effective treatment for ADHD, but it is often difficult to know which medicine will work best for a particular child. As a result, some children may need to try several medicines before finding one that is effective and well tolerated. This study aims to test a new online decision-support system called PETRA. The system is designed to help children, parents or carers, and doctors make shared decisions about ADHD medication. The study will assess whether it is practical and acceptable to run a larger clinical trial comparing this personalised approach with standard care.

Participants needed: 102
Trial details
Age: 6-17Biological sex: AllType: InterventionalSponsor: University of SouthamptonUpdated: Sep 10, 2026
Eligibility criteria

Aged 6-17 years [+7]

Based on the clinical judgement of the prescribing clinician, any current condit... [+1]

Status: Not yet recruiting

Brief Intervention Addressing Stigma Among Parents of Children With Mental Health Problems

The goal of this study is to test the efficacy of brief video interventions parental internalized stigma and stigma-related outcomes (e.g., treatment intentions, caregiver burden, secrecy) among parents (ages 25-50) of children ages 6-18 with depression, ADHD, or substance use problems. Timely identification and treatment of mental health problems in youth is a public health priority. However, many youth do not receive treatment, and stigma has been identified as the primary barrier to help-seeking. Parents experience stigma related to their children having mental health problems, which has been associated with reduced help-seeking and increased parental distress. Prior experiments have found brief video-based interventions (BVIs), 1-2 minute videos similar to those viewed by youth on social media platforms, based on the principle of "social contact" with individuals affected by a stigmatized condition, effective in reducing mental health stigma and increasing help-seeking. In this 4-arm RCT, the investigators will recruit parents aged 25-50 using an online crowdsourcing platform, to test the efficacy of BVIs featuring a personal parent narrative of their experience with their child's a) depression, b) ADHD, or c) substance use, or d) a control condition that provides general written psychoeducational information without social contact.

Participants needed: 1,600
Trial details
Age: 25-50Biological sex: AllType: InterventionalSponsor: New York State Psychiatric InstituteUpdated: Sep 3, 2026Locations: 1
Eligibility criteria

Self-identify as English Speaking [+3]

Do not speak English [+3]

Status: Not yet recruiting

Immersive Gamified Virtual Reality-Based Training for Children With Attention Deficit Hyperactivity Disorder

This study evaluates a gamified virtual reality (VR) training program designed to help children with ADHD. Participants will be randomly assigned to one of three groups: the VR training group, a traditional training group, or a waitlist group. Children in both training groups will complete 12 sessions over three weeks. To measure the program's effectiveness, researchers will test all participants four times: before the study starts, immediately after the training ends, and at 3-month and 6-month follow-ups. Finally, children from the VR group will be interviewed after the 6-month check-in to share their experiences, including the benefits and challenges they encountered.

Participants needed: 120
Trial details
Age: 6-12Biological sex: AllType: InterventionalSponsor: The Hong Kong Polytechnic UniversityUpdated: Aug 25, 2026
Eligibility criteria

(1) children aged between 6 and 12 years; [+3]

(1) with comorbid conduct/behaviour problems; [+5]

Status: Recruiting

Evaluating the Efficacy of Central Executive Training (CET) For Young Children With ADHD

Initial non-randomized trial of behavioral parent training (BPT) compared to central executive training (CET), followed by a randomized controlled trial of CET+BPT for young children with ADHD.

Participants needed: 120
Trial details
Age: 4-8Biological sex: AllType: InterventionalSponsor: Florida State UniversityUpdated: Aug 25, 2026Locations: 1
Eligibility criteria

principal ADHD diagnoses (via K-SADS); (b) parent BASC-3 ADHD Problems or ADHD-R...

(a) gross neurological, sensory, or motor impairment; (b) history of seizure dis...

Status: Not yet recruiting

Efficacy of Cognitive Behavioural Therapy for Insomnia and Bright Light Therapy in Adolescents With ADHD, Insomnia, and Evening Chronotype

Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterised by persistent inattention, hyperactivity, and impulsivity. In adolescents and young people, ADHD is commonly accompanied by insomnia and circadian delay. These co-occurring sleep and circadian disturbances may negatively affect daytime functioning and overall clinical outcomes. Although cognitive behavioural therapy for insomnia (CBT-I) is considered the first-line treatment for insomnia, and bright light therapy may help address circadian issues, their efficacy in adolescents with ADHD and comorbid insomnia and eveningness remains unexplored. This study aims to evaluate whether CBT-I, with or without bright light therapy, improves insomnia, sleep, and circadian as well as other clinical outcomes, and cognitive functioning in youths with ADHD and whether these interventions can also lead to improvements in mood and other clinical symptoms, as well as cognitive functioning.

Participants needed: 150
Trial details
Age: 10-24Biological sex: AllType: InterventionalSponsor: The University of Hong KongUpdated: Aug 24, 2026Locations: 1
Eligibility criteria

aged 10-24 years old; [+6]

Substance abuse or dependence; a current or past history of manic or hypomanic e... [+6]

Status: Recruiting

Impact of Short and Mistimed Sleep on Adolescents With ADHD: The Adolescent Attention and Circadian Timing Study

Many adolescents go to bed late and wake up early for school. Science is only beginning to understand how sleep schedules can affect them. The investigators are interested in whether changing adolescents' sleep patterns affects their functioning, attention, and how they feel. The investigators are especially interested in the effects of changing both how much sleep adolescents get and when that sleep happens. This study focuses on healthy 13-17-year-olds with ADHD. This study asks adolescents to systematically change their sleeping habits across a 3 week span. The first week, they follow a sleep schedule that fits reasonably well with the schedule they keep when they do not have to wake up early for any specific obligation (e.g., for school). The second week, they spend several nights in a "short sleep" condition, during which they get 6.5 hours in bed per night. The final week, they enter a sleep condition that allows for healthy sleep duration, but with a timing that is randomly assigned to either fit well with their preferred schedule or fit poorly with that schedule. During each week, they and their parents complete measures of their attention and other factors. At the end of each week, they attend an evening session to measure their internal body clock ("circadian phase"), as well as measures of attention and other thinking skills. The goal is to understand whether the benefits of healthy sleep duration depend on the timing of when that sleep occurs.

Participants needed: 50
Trial details
Age: 13-17Biological sex: AllType: InterventionalSponsor: Children's Hospital Medical Center, CincinnatiUpdated: Aug 17, 2026Locations: 1
Eligibility criteria

Ages 13-17 years at time of informed consent/assent [+1]

Non-traditional school setting (morning-afternoon Monday-Friday). [+7]

Status: Recruiting

Sertraline vs. Placebo in the Treatment of Anxiety in Children and AdoLescents With NeurodevelopMental Disorders

There are currently no approved medications for the treatment of anxiety in children and youth with neurodevelopmental disorders (NDDs), both common and rare. Sertraline, a selective serotonin reuptake inhibitor, has extensive evidence to support its use in children's and youth with anxiety but not within NDDs. More research is needed to confirm whether or not sertraline could help improve anxiety in children and youth with common and rare neurodevelopmental conditions. This is a pilot study, in which we plan to estimate the effect size of reduction in anxiety of sertraline vs. placebo. across rare and common neurodevelopmental disorders, and determine the best measure(s) to be used as a primary transdiagnostic outcome measure of anxiety, as well as diagnosis specific measures in future, larger-scale clinical trials of anxiety in NDDs.

Participants needed: 130
Trial details
Phase: Phase 2Age: 8-17Biological sex: AllType: InterventionalSponsor: Holland Bloorview Kids Rehabilitation HospitalUpdated: Jul 27, 2026Locations: 7
Eligibility criteria

Outpatients 8-17 years of age, inclusive [+7]

Receiving other SSRIs within four weeks of randomization (6 weeks for fluoxetine... [+12]

Status: Not yet recruiting

ADHD, Gut Problems and Synbiotic

The scope of this study is to evaluate the impact of a synbiotic product (a combination of probiotic bacteria and prebiotics) on symptoms reported by participants with ADHD. The main focus is to study the efficacy of the synbiotic product as compared to a placebo in improving emotion regulation and gut-health associated symptoms in adults with ADHD.

Participants needed: 174
Trial details
Age: 18-64Biological sex: AllType: InterventionalSponsor: Super Synbiotics ABUpdated: Jul 21, 2026
Eligibility criteria

ADHD-diagnosis [+3]

Has consumed antibiotics within the previous 6 weeks [+1]

Status: Recruiting

The Effect of a Brief Educational Intervention for Adults With ADHD

This RCT-study proposes the evaluation of an intensive educational intervention tailored for adults with Attention Deficit Hyperactivity Disorder (ADHD) in community mental health centers (CMHCs). Given the prevalent challenges of prolonged waiting lists and low patient engagement in CMHCs, the research seeks to assess the efficacy of this intervention in enhancing patient engagement, self-efficacy, satisfaction with the information and overall health outcomes. The intervention, developed collaboratively with user representatives, combines a brief group-based educational sessions with standard clinical care. The primary hypotheses posit that this approach will lead to increased patient satisfaction with the treatment, patient self-efficacy, and activation compared to conventional treatment. Additionally, it aims to improve patients' satisfaction with information received. The study will employ a ITT analysis to assess the intervention's effects against usual treatment practices in outpatient settings. The anticipated outcome is a significant improvement in level of patient satisfaction, level of self-efficacy and level of satisfaction with the received information for patients with ADHD, potentially informing clinical practices and optimizing care for adults with ADHD.

Participants needed: 60
Trial details
Age: 18-65Biological sex: AllType: InterventionalSponsor: St. Olavs HospitalUpdated: Jul 20, 2026Locations: 1
Eligibility criteria

Confirmed ADHD-diagnosis [+2]

Unable to give informed consent [+3]

Status: Not yet recruiting

A Phase 3 Study of Viloxazine ER Capsules in Korean Children and Adolescents With ADHD

This is a Phase 3, randomized, double-blind, placebo-controlled, multicenter bridging clinical trial designed to evaluate the efficacy and safety of viloxazine extended-release capsules (AK-D101) compared with placebo in Korean children and adolescents aged 6 to 17 years with attention-deficit/hyperactivity disorder (ADHD). Eligible participants will be randomized in a 1:1 ratio to receive AK-D101 or placebo once daily for 8 weeks. Randomization will be stratified by study site and age group (children aged 6 to 11 years and adolescents aged 12 to 17 years). The primary efficacy endpoint is the change from baseline to Week 8, End of Treatment, in the Korean ADHD Rating Scale, 5th Edition (K-ARS-5) Total Score.

Participants needed: 156
Trial details
Phase: Phase 3Age: 6-17Biological sex: AllType: InterventionalSponsor: Alvogen KoreaUpdated: Jul 2, 2026Locations: 1
Eligibility criteria

Korean male or female subjects who are ≥6 and ≤17 years of age at the time of wr... [+6]

Clinical laboratory tests: Results are within the normal range or, if outside th... [+19]