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RecruitingNCT05092191CANSEPUpdated Dec 13, 2024

Cannabis as a Complementary Treatment in Multiple Sclerosis

A Phase 2 interventional study of Cannabis oil vs placebo in Multiple Sclerosis, sponsored by Centre hospitalier de l'Université de Montréal (CHUM). Recruiting at 1 site in Canada. Open to participants aged 21 Years and older. Per ClinicalTrials.gov, last updated 2024-12-13.

Sponsored by Centre hospitalier de l'Université de Montréal (CHUM) · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Apr 2025, 1 year 5 months ago, but the record still lists the study as recruiting.
  • Started Nov 2022; still recruiting 3 years 10 months later.
Phase
Phase 2
Study type
Interventional
Enrollment
250
Allocation
Randomized
Ages
21 Years and older
Sex
All
01

Study summary

Multiple sclerosis (MS) is an inflammatory disease of the central nervous system (CNS) afflicting over 77,000 Canadians. Unfortunately, the therapeutic arsenal to relieve MS symptoms is limited. It is therefore essential to develop better approaches to treat the symptoms of MS. The use of cannabis for recreational purposes is now legal in Canada. However, for many years, people with Multiple Sclerosis (PwMS) have used cannabis either to relax, to reduce pain and spasticity, or to improve sleep and daily functioning. Currently, there is little scientifically established evidence that cannabis works on these symptoms in people with MS. It is therefore important to carry out studies to better understand the efficacy Δ-9-tetrahydrocannabinol (THC), and cannabidiol (CBD) on MS symptoms . THC is known for its analgesic, neuroprotective and anti-inflammatory properties and CBD seems to have positive effects on anxiety and cognitive abilities (memory, concentration).

For this study, investigators hypothesize that administering different doses of THC alone, CBD alone, and THC and CBD combined will result in a significant beneficial effect on spasticity relief compared to placebo.

Read the detailed description

The aim of this study is to document,

  1. The efficacy of THC and CBD, alone and in combination, as add-on therapies to the current standard treatments for relief of spasticity and other symptoms in PwMS (muscle spasms and stiffness);
  2. Assess the tolerability profile of THC and CBD, alone and in combination, when used in PwMS;
  3. Identify the mechanisms underlying such therapeutic and adverse effects of different types of cannabis-based medicines in PwMS,

Participants will initially receive THC 4mg/day or CBD 40mg/day or THC/CBD combination (THC 4mg and CBD 40mg/day), or placebo, on the first day. Dose will be increased up to 20mg (THC) and 200mg (CBD) per day, if well tolerated. Participants will receive the allocated treatment for a total of 4 weeks, followed by an additional 12 weeks of treatment for responders who will be identified as patients who had a decrease from baseline in spasticity of at least one point on the Numerical Rating Scale . THC and CBD will be taken as oil softgels in two divided doses per day. Cannabis extract and placebo will taste and look exactly the same.

To protect from all contingencies and to minimize the risk of adverse reactions, the presence of adverse events will be evaluated at each research visit, as well as through courtesy calls between visits. If any mental or physical symptoms occur that require medical attention, the PwMS will be referred as required to an attending neurologist, psychiatrist, or other specialists .

02

Conditions studied

  • Multiple Sclerosis
03

In context

Multiple Sclerosis

3,460 studies on the registry are indexed under Multiple Sclerosis; 661 are open to participants now.

This study's planned enrollment of 250 is above the median of 50 across 2,342 interventional studies indexed under Multiple Sclerosis.

Browse Multiple Sclerosis studies →

Lead sponsor

Centre hospitalier de l'Université de Montréal (CHUM) is the lead sponsor of 370 studies on the registry; 110 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
21 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

Participants must meet the following criteria:

  1. Diagnosed with MS (any subtype), for at least six months, by a MS neurologist, according to the recent version of the McDonald criteria;
  2. Spasticity due to MS of at least one-month duration and not relieved with current therapy, at a level of 4 or more on the numerical rating scale (NRS);
  3. Stable dose of standard therapies for at least 30 days prior to the screening visit and willingness for these to be maintained for the duration of the study;
  4. Aged 21 years or older;
  5. Ability (in the investigator's opinion) and willingness to comply with all study requirements;
  6. Ability to speak and read French or English (grade-nine level of language required);

Exclusion criteria

Exclusion Criteria:

Participants will be excluded if any of the following criteria are met:

  1. Concomitant disease with symptoms of spasticity, or that may have influenced their level;
  2. Received a botulinum toxin injection within four months prior to the screening visit or unwillingness to stop receiving botulinum toxin injections for the duration of the study;
  3. Use of cannabis or cannabinoid-based medications within 7 days of study entry and unwillingness to abstain for the duration of the study;
  4. History of schizophrenia, other psychotic illness or other significant psychiatric disorder other than anxiety or depression associated with their underlying condition;
  5. Alcohol or substance use disorder other than nicotine;
  6. History of epilepsy or recurrent seizures;
  7. Hypersensitivity to cannabinoids or any of the excipients of the study medication;
  8. Clinically relevant cardiac dysfunction within the last 12 months or had a cardiac disorder that, in the opinion of the investigator would put the subject at risk of a clinically relevant arrhythmia or myocardial infarction;
  9. Impaired renal function i.e., serum creatinine clearance lower than 50 ml/min;
  10. Significantly impaired hepatic function, at visit 1, in the investigator's opinion and/or had liver function tests of equal to or greater than three times the upper limit of normal;
  11. Pregnancy or breastfeeding;
  12. Men with history of fertility problems and who plan to conceive at any time in the future;
  13. Any participant who plans to conceive either at screening or while enrolled in the study;
  14. Inability (or unwillingness) of women of childbearing potential and men to use a medically acceptable form of contraception throughout the study duration;
  15. Inability to use a medically acceptable form of contraception throughout the study duration; m) any other significant disease or disorder which, in the opinion of the investigator, may either put the subject at risk because of participation in the study, may influence the result of the study, or the subject's ability to participate in the study;
  16. Intention to travel internationally, or to donate blood during the study.
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Factorial assignment
Masking
Single (Participant)
Enrollment
250 participants (estimated)

Study arms

  • Experimental
    CBD alone

    * Dosage form : Softgel * Dosage \& frequency : 40 mg /day of CBD up to 200 mg in two doses a day * Duration : 4 weeks of treatment followed by 12 additional weeks of follow up.

    Drug: Cannabis oil vs placebo

  • Experimental
    THC alone

    * Dosage form : Softgel * Dosage \& frequency : 4 mg /day of THC up to 20 mg in two doses a day * Duration : 4 weeks of treatment followed by 12 additional weeks of follow up.

    Drug: Cannabis oil vs placebo

  • Experimental
    THC and CBD combined

    * Dosage form : Softgel * Dosage \& frequency : 40 mg /day of CBD up to 200 mg and 4 mg /day of THC up to 20 mg in two doses a day * Duration : 4 weeks of treatment followed by 12 additional weeks of follow up.

    Drug: Cannabis oil vs placebo

  • Placebo comparator
    Placebo

    * Dosage form : Softgel * Dosage \& frequency : caps of placebo twice a day * Duration : 4 weeks of treatment followed by 12 additional weeks of follow up.

    Drug: Cannabis oil vs placebo

Interventions

  • DrugCannabis oil vs placebo

    Eligibility, Screening and Baseline (T0): Candidates will be seen by both research staff and a neurologist. Full written informed consent will be obtained before completing questionnaires and administering physical and medical evaluations. If eligibility is confirmed, a blood sample will be collected followed by participant randomisation . Follow-up visits: Randomized participants come back after 4 weeks (T1) for the same assessments administered at T0. Only participants who had a decrease in their level of spasticity can continue their participation in the same allocated arm for an additional period of 12 weeks. At the end of the additional period of 12 weeks (T2), another visit is scheduled for a last assessments which are the same as T0 and T1. Throughout study, courtesy calls will be scheduled and standard care for MS will also be offered to ensure participants 'safety and well-being.

    Also known as: Randomized Controlled Trial

06

What researchers measure

Primary outcomes

  1. Spasticity patient reported change assessment

    Patient-reported spasticity: a Numerical rating scale - 0 (No pain) to 10 (worst pain)

    Time frame: Change from Baseline Patient reported spasticity at 28 weeks and 16 weeks

Other outcomes

  1. Spasticity change Clinician assessment

    Spasticity: Ashworth scale -1 (normal) to 4 (rigid)

    Time frame: Change from Baseline Clinician evaluation spasticity at 28 weeks and 16 weeks

  2. Pain change assessment

    Pain: Pain Effects-1 (Not at all) to 4 (extreme)

    Time frame: Change from Baseline pain at 28 weeks and 16 weeks

  3. Mobility Change assessement

    Mobility: Timed 25-Foot Walk test

    Time frame: Change from Baseline mobility at 28 weeks and 16 weeks

  4. Fatigue change assessement

    Fatigue: Modified Fatigue Impact Scale-0 (never) to 4 (always)

    Time frame: Change from Baseline fatigue at 28 weeks and 16 weeks

  5. Sleep change assessement

    Sleep: Pittsburgh Study Quality sleep Index-0 (no difficult) to 3 (severe)

    Time frame: Change from Baseline sleep at 28 weeks and 16 weeks

  6. Drowsiness change assessement

    Drowsiness: Epworth Sleepiness scale-0 (no chance) to 3 (High chance)

    Time frame: Change from Baseline Drowsiness at 28 weeks and 16 weeks

  7. Bowel /Bladder dysfunction change assessement

    Bowel /Bladder dysfunction: Bowel/Bladder Control Scale-0 (not at all) to 4 (Daily)

    Time frame: Change from Baseline Bowel/Bladder dysfunction at 28 weeks and 16 weeks

  8. Sexual dysfunction change assessement

    Sexual dysfunction: Sexual Satisfaction Scale-0 (Extremely Satisfied) to 6 (Extremely Dissatisfied)

    Time frame: Change from Baseline Sexual dysfunction at 28 weeks and 16 weeks

  9. Restless Legs Syndrome change assessement

    Restless Legs Syndrome - 4 (V.severe) to 0 (None)

    Time frame: Change from Baseline Restless Legs Syndrome at 28 weeks and 16 weeks

  10. Mental Health disorder change assessement

    Mental Health issues: Mental Health inventory-1 (All of the time) to 6 (None of the time)

    Time frame: Change from Baseline Mental Health at 28 weeks and 16 weeks

  11. Anxiety/Depression change assessement

    Anxiety/Depression: Hospital Anxiety and Depression-0 to 3 (highest level)

    Time frame: Change from Baseline Anxiety/Depression at 28 weeks and 16 weeks

  12. Cannabis use disorder assesssment

    Cannabis use disorder : diagnosis

    Time frame: Cannabis use disorder : assessment at only baseline

  13. Cognition change assessement

    Cognition tests

    Time frame: Change from Baseline cognition at 28 weeks and 16 weeks

  14. Quality of life change assessement

    Quality of life: Health Status Questionnaire (Higher scores indicate better health)

    Time frame: Change from Baseline Quality of life at 28 weeks and 16 weeks

07

Study locations

1 of 1 sites recruiting
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 13, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05092191
Lead sponsor
Centre hospitalier de l'Université de Montréal (CHUM)
Collaborators
Canadian Institutes of Health Research (CIHR), Multiple Sclerosis Society of Canada
Responsible party
Sponsor
First posted
Oct 25, 2021
Start date
Nov 10, 2022
Primary completion
Apr 10, 2025 (estimated)
Completion
May 10, 2025 (estimated)
Last update
Dec 13, 2024

Study contacts

Pierre Duquette
Contact
pierre.duquette.med@ssss.gouv.qc.ca
514 890 8000 ext. 0831
Amel Zertal
Contact
amel.zertal.chum@ssss.gouv.qc.ca
514 890 8000 ext. 30883
Pierre Duquette, MD
principal investigator · Centre hospitalier de l'Université de Montréal (CHUM)

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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