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Published on: August 18, 2020
An open-label pilot study of cannabis-based extracts for bladder dysfunction in advanced multiple sclerosis.
C M Brady1, R DasGupta, C Dalton
1Dept of Uro-Neurology, Institute of Neurology and National Hospital for Neurology and Neurosurgery, Queen Square, London WC1N 3BG, UK.
Summary
Cannabis extracts significantly improved urinary symptoms and secondary issues like pain and spasticity in multiple sclerosis (MS) patients. This study indicates cannabis-based medicine is safe and effective for managing MS-related urinary dysfunction.
Area of Science:
- Neurology
- Pharmacology
- Urology
Background:
- Multiple sclerosis (MS) frequently causes lower urinary tract symptoms (LUTS).
- Cannabis compounds, like delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD), interact with cannabinoid receptors, suggesting potential therapeutic roles in LUTS.
- Existing anecdotal evidence supports cannabis as a treatment for LUTS in MS.
Purpose of the Study:
- To assess the safety, tolerability, effective dose range, and efficacy of whole-plant Cannabis sativa extracts in patients with advanced MS and refractory LUTS.
- To evaluate the impact of cannabinoid treatments on urinary function and associated symptoms in MS patients.
Main Methods:
- An open-label trial involving patients with advanced MS and refractory LUTS.
- Treatment involved two phases: eight weeks of combined THC and CBD extract, followed by eight weeks of THC-only extract.
- Outcome measures included urinary frequency/volume charts, incontinence pad weights, cystometry, and visual analogue scales for pain, spasticity, and sleep quality.
Main Results:
- Significant reductions in urinary urgency, incontinence episodes (number and volume), frequency, and nocturia were observed (P <0.05).
- Daily total voided, catheterized, and incontinence pad weights also decreased significantly.
- Patient-reported improvements in pain, spasticity, and sleep quality were significant (P <0.05), with pain relief sustained long-term.
Conclusions:
- Whole-plant Cannabis sativa extracts, containing THC and CBD, demonstrate safety and efficacy in treating LUTS and associated symptoms in advanced MS.
- Cannabis-based medicinal extracts represent a viable therapeutic option for managing complex urinary and secondary symptoms in multiple sclerosis patients.
- The study supports further investigation into cannabinoid-based therapies for neurological conditions with significant symptomatic burden.

