🏛️ Verified NIH Record • Updated 2026-01-12
Cannabis (THC vs. CBD) in Multiple Sclerosis (NCT06261489)
The Differential Effects of THC vs. CBD on Cognition in Persons With MS
🔵 Active, Not Recruiting Phase2 💊 Investigational Drug / Biologic Sponsor: University of Calgary
🩺 Plain-English Summary (8th-Grade Level)
The goal of this clinical trial is to examine the effect of Cannabis components, THC and CBD, on cognition and bladder symptoms in people with Multiple Sclerosis (MS). Participants will complete questionnaires and cognitive tests. They will be randomly assigned to receive either CBD or THC oil and will take the study drug for 15 weeks.
Who can join: Review the eligibility criteria below.
Location: University of Calgary — Calgary, Alberta
Age range: 18 Years to 59 Years
🧪 Interventions in This Study
📋 "Do I Qualify?" — 1-Minute Self Screener
Instant ChecklistFull eligibility criteria are available on the official NIH protocol. View the criteria ↗
📍 All Participating Trial Locations (1 Sites)
- University of Calgary — Calgary, Alberta
💰 Cost, Insurance & Patient Rights
- 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
- Routine Patient Care: Under federal law (ACA § 2709) and many state statutes, routine care costs are covered during participation.
- Voluntary Participation: You may withdraw at any time without affecting your standard medical care.
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- A Rollover Study to Evaluate the Long-Term Safety and Efficacy of Ocrelizumab In Patients With Multiple Sclerosis — Phoenix, Arizona
- A Study to Assess Bioequivalence of Two Subcutaneous (SC) Formulations of Ocrelizumab in Participants With Multiple Sclerosis (MS) — Carlsbad, California
- The Synergistic Effects of AIH and FES in Persons With MS — Chicago, Illinois
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Explore by condition: All Multiple Sclerosis clinical trials
💡 How to Participate
- Check the checklist above to see if you may qualify.
- Review the official NIH record below to find the coordinating site.
- Ask about the visit schedule, what is covered at no cost, and any travel support.
- Confirm with your own doctor before making a decision.