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OpenTrials
Active, Not Recruiting

NCT Number: NCT04075435

Cannabidiol Solution for the Treatment of Behavioral Symptoms in Older Adults With Mild Cognitive Impairment or Alzheimer's Dementia

This is an open label, eight week, clinical trial of a proprietary high CBD/low THC sublingual solution for the treatment of clinically significant anxiety and agitation in individuals with mild cognitive impairment (MCI) or mild to moderate Alzheimer's Disease (AD).

Active, Not Recruiting

This study is active but is not currently recruiting participants.

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Key information

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Diagnosis of probable Alzheimer's Dementia via criteria from McKhann et al., or MCI
  • MMSE score of 15-30 (inclusive)
  • Clinically significant degree of anxiety, as defined by a Clinical Impression total column score of ≥4 on the Anxiety domain of the NPI-C
  • A health care proxy available to sign consent on behalf of the participant (if applicable)
  • A caregiver who spends at least 10 hours per week with the subject who is able to attend all study visits
  • Participants and their study partner must be fluent in English
  • Must be 55-90 years old (inclusive)

Exclusion criteria

  • Serious or unstable medical illness, including cardiovascular, hepatic, renal, respiratory, endocrine, neurologic or hematologic disease, which might confound assessment of safety outcomes.
  • Seizure disorder
  • Lifetime diagnosis of bipolar disorder, schizophrenia, schizoaffective disorder, as determined by the MINI
  • Current episode of major depression, as determined by the MINI
  • Active substance abuse or dependence within the past 6 months, as determined by the MINI
  • Delirium (as measured by the CAM)
  • Current inpatient hospitalization
  • Current regular use of cannabinoid products (>1 use per month)
  • Positive urine screen for THC at the screening or baseline visit
  • Allergy to coconut
  • Participants taking strong inhibitors or inducers of CYP3A4 (e.g. fluconazole, fluoxetine, fluvoxamine, ticlopidine, St. John's Wort, etc.), CYP2C19 (ketoconazole, erythromycin, etc.), or anti-epileptic drugs

Treatment and study plan

high CBD/low THC sublingual solution

Drug

Hemp derived solution to be administered sublingually twice daily.

Primary outcomes

  1. Total of clinician impression column on anxiety domain of the NPI-C

    Time frame: Continuous, weeks 0-8

    Measure of Anxiety Domain on the Neuropsychiatric Inventory-Clinician scale

Secondary outcomes

  1. Total score on the Generalized Anxiety Disorder 7 scale

    Time frame: Continuous, week 0-8

    Secondary Outcome Measure of anxiety reduction

  2. Number of serious adverse events

    Time frame: Continuous, weeks 0-8

    Secondary Outcome Measure of safety defined by absence of serious adverse events

  3. Week 8 MMSE total score compared to baseline MMSE total score

    Time frame: longitudinal: screening/baseline and week8

    Secondary Outcome Measure of safety as defined by lack of treatment emergent cognitive impairment as measured by the Mini Mental Status Exam (MMSE)

  4. Score on the confusion assessment method

    Time frame: Continuous screening weeks 0-8, dichotomous

    Secondary Outcome Measure of safety defined as absence of treatment emergent delirium as measured by the Confusion Assessment Method (CAM)

  5. Number and severity of side effects reported

    Time frame: Continuous, weeks 0-8

    Secondary Outcome Measure of safety defined as a low number of emergent somatic side effects as measured by the Medication Side Effects Questionnaire

Other outcomes

  1. Total clinical impression column score on neuropsychiatric inventory agitation and aggression domains (NPI-C)

    Time frame: Continuous, weeks 0-8

    Exploratory measure to see reduction in agitation and aggression symptoms

  2. Total score of Cohen-Mansfield Inventory (CMAI)

    Time frame: Continuous, weeks 0-8

    Exploratory measure to see reduction in agitation symptoms

  3. Total Score of Zarit Caregiver Burden Interview

    Time frame: Continuous, weeks 0-8

    Exploratory downstream reduction in caregiver burden

  4. Stability of anxiety and agitation reduction using anxiety domain of NPI-C and GAD-7

    Time frame: Months 3, 6, 9, and 12 of the optional follow-up phase

    Exploratory investigation into the stability of anxiety reduction using the anxiety domain score on the NPI-C and the GAD-7 during the optional follow-up phase

  5. Stability of caregiver burden reduction

    Time frame: Months 3, 6, 9, and 12 of the optional follow-up phase

    Exploratory investigation into reduction of caregiver burden using the Zarit Caregiver Burden Interview during the optional follow-up phase

Sponsors and collaborators

Lead sponsor

Mclean Hospital

Other

Collaborators

  • Spier Family Foundation

Registry information

Official study title

Open-Label Trial of a Cannabidiol Solution for the Treatment of Behavioral Symptoms in Older Adults With Mild Cognitive Impairment or Alzheimer's Dementia

Acronym: CBD

Important dates

Study start
2021
Primary completion
2026
Study completion
2026
First posted
Aug 30, 2019
Registry last updated
Mar 30, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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