Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.

NCT03582137 · ClinicalTrials.gov registry record · Phase 2

A Study of Tolerability and Efficacy of Cannabidiol on Motor Symptoms in Parkinson's Disease

A Phase 2 study, sponsored by University of Colorado, Denver.

Completed
Registry status
Phase 2
Development phase
74
Enrollment target

NCT03582137: Completed Phase 2 study, sponsored by University of Colorado, Denver.

NCT03582137 is a Phase 2 study that has completed, run by University of Colorado, Denver. The registered enrollment target is 74 participants, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (44% lower). According to ClinicalTrials.gov, the official US trial registry.

View on ClinicalTrials.gov ↗

View your shortlist →

The verdict

NCT03582137, a Phase 2 study, has completed, sponsored by University of Colorado, Denver.

COMPLETED
Registry status
Phase 2
Development phase
74 participants
Enrollment target

Study Summary

The major purpose of this study is to assess the efficacy of CBD on motor symptoms of Parkinson's Disease (PD), and secondarily to study the safety and tolerability of CBD and other efficacy, particularly regarding tremor in PD. The study has been powered to detect a clinically significant reduction in Movement Disorder Society (MDS) Unified Parkinson's Disease Rating Scale (UPDRS) Part III motor scores. This is a 1:1 parallel, double-blind, randomized controlled trial (RCT) with 60 participants. The investigators will be recruiting up to 75 participants; the goal is to have 60 participants (30 in CBD group and 30 in placebo group) complete the study. The study drug is obtained from the National Institute on Drug Abuse (NIDA).

Primary Outcome

Movement Disorders Society-Unified Parkinson's disease rating scale(MDS UPDRS) Part III assesses the motor signs of PD. There are 33 scores based on 18 items, several with right, left or other body distribution scores.Each question is anchored with five responses that are linked to commonly accepted clinical terms: 0=normal, 1=slight, 2=mild, 3=moderate, and 4=severe. The possible change may be the scores of the total 33 scores. Scores ranges 0 -132. Higher values represent a worse outcome.

Interventions

  • OTHER Placebo
  • DRUG Cannabidiol

Trial Details

FieldValue
Enrollment Target 74 participants
Start Date 2018-09-05
Est. Completion 2022-01-04
Phase Phase 2
University of Colorado, Denver

1,283 total trials

What the finished NCT03582137 record still lists

NCT03582137 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 74 participants, a relatively small participant target, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (44% lower).

The record links to 0 conditions, and to 2 interventions - of which Placebo is the first listed.

NCT03582137 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT03582137 about?

NCT03582137 is a clinical study titled "A Study of Tolerability and Efficacy of Cannabidiol on Motor Symptoms in Parkinson's Disease". The major purpose of this study is to assess the efficacy of CBD on motor symptoms of Parkinson's Disease (PD), and secondarily to study the safety and tolerability of CBD and other efficacy, particularly regarding tremor in PD. The study has been powered to detect a clinically significant reduction...

What is the current status of trial NCT03582137?

This trial is currently completed. It is a Phase 2 study. The enrollment target is 74 participants. The study started on 2018-09-05. Estimated completion is 2022-01-04.

What interventions are being tested in trial NCT03582137?

The interventions under investigation include: Placebo (OTHER), Cannabidiol (DRUG).

Who is sponsoring clinical trial NCT03582137?

This trial is sponsored by University of Colorado, Denver, which has 1,283 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT03582137's enrollment target sits among peer trials

74 920th of 2000 higher than 1,077 of 2,000 other Phase 2 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 2 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

Nationwide trials with similar profiles

Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.

Similar enrollment target

  • NCT03422731 · 74 participants · Early Phase 1

    Multi-modality Imaging and Collection of Biospecimen Samples in Understanding Bone Marrow Changes in Patients With Acute Myeloid Leukemia Undergoing TBI and Chemotherapy

  • NCT03804853 · 74 participants · NA

    Rehabilitation Following Reverse Total Shoulder Arthroplasty

  • NCT04065776 · 74 participants · NA

    Evaluation of Hippocampal-Avoidance Using Proton Therapy in Low-Grade Glioma

  • NCT04771156 · 74 participants · Phase 4

    Ketorolac in Palatoplasty

Similar registry start date

  • NCT05962346 · started 2026-12 · NA

    Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia

  • NCT07125183 · started 2026-12 · Phase 2

    Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma

  • NCT07292298 · started 2026-11 · Phase 2

    Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates

  • NCT04263285 · started 2026-10 · NA

    Treatment of Depression Post-SCI

Source: ClinicalTrials.gov NCT03582137, the US trial registry maintained by the National Library of Medicine. NCT03582137 (small enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.