Clinical trial Recruiting at 1 site Phase1; Phase2 Interventional Ages 12 to 17

Cannabigerol Oil for Adolescents With ADHD

Official title: Potential Effects of Cannabigerol in Adolescents With Attention-Deficit/Hyperactivity Disorder: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial (CAN-ADHD)

Run by Universidade do Sul de Santa Catarina · NCT07592390 · Data updated 2026-11-12

This study tests full-spectrum cannabigerol (CBG) oil to see if it helps kids aged 12–17 who have ADHD and haven’t fully benefited from other treatments.

Quick facts

PhasePhase1; Phase2
Study typeInterventional
Ages12 Years to 17 Years
SexAll
Enrollment60 (estimated)
SponsorUniversidade do Sul de Santa Catarina
Government
Locations1 site (Tubarão, Santa Catarina)
StatusRecruiting
StartedMay 1, 2026
Main results expectedDecember 18, 2026
Study endsDecember 18, 2026
Registry record updatedMay 18, 2026
Trial IDNCT07592390 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adolescents aged 12–17 with ADHD who have not achieved sufficient symptom relief from prior treatments.

Probably not a fit

Patients who do not respond to CBG or experience adverse effects may not benefit from this intervention.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a randomized, double-blind, placebo-controlled study in adolescents with ADHD. Sixty participants will be randomly assigned to receive either CBG oil or a matching placebo for a set period, with weekly dosing adjustments guided by a physician. The trial uses a parallel design to compare cognitive and behavioral outcomes between groups, alongside safety monitoring. Full-spectrum CBG oil is given sublingually at a starting concentration of 30 mg/mL, with individualized dosing based on tolerability and response. The study aims to determine whether CBG can provide additional benefits beyond standard ADHD therapies.

Why it matters

Potential benefit: If successful, CBG oil could offer an additional treatment option to help manage ADHD symptoms in adolescents.

How similar studies have gone: Other studies using cannabinoids for ADHD are limited; this trial explores a novel area with CBG in this age group.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adolescents aged 12 to 17 years
* Diagnosis of Attention-Deficit/Hyperactivity Disorder (ADHD) confirmed using the SNAP-IV (Swanson, Nolan and Pelham Questionnaire, version IV)
* History of previous treatment with pharmacological or non-pharmacological interventions without significant improvement of symptoms
* Absence of severe psychiatric disorders or relevant physical comorbidities
* Ability of the participant and legal guardian to understand study procedures
* Provision of written informed consent by the legal guardian and assent by the adolescent

Exclusion Criteria:

* Use of cannabinoid-based substances (natural or synthetic) within 30 days prior to study initiation
* History of intolerance or adverse reactions to cannabis-derived compounds (e.g., confusion, paranoia, pruritus, excessive drowsiness, vomiting, diarrhea, or seizures)
* Presence of any significant physical comorbidity
* Presence of severe psychiatric disorder not related to ADHD
* Moderate to severe cognitive impairment
* Inability or unwillingness to complete study procedures or questionnaires adequately

Where it's running

  • Universidade do Sul de Santa Catarina - UNISUL
    Tubarão, Santa Catarina, Brazil
    Recruiting

Study contacts

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.