←Parkinson Disease
Study register · detail Meta-Analyse · Parkinson Disease · 2022

Effects of Cannabis in Parkinson's Disease: A Systematic Review and Meta-Analysis.

Urbi et al. ·Journal of Parkinson's disease Impact 4.8
Mixed GRADE High 77 citations
Samplek = 23 Studien
Durationunclear
ControlPlacebo or control groups
EndpointMotor/non-motor PD symptoms
Blindingunklar
DesignMeta-Analyse
Key finding

No compelling evidence of cannabis benefit in Parkinson's disease, but potential benefits identified for tremor, anxiety, pain, sleep quality and quality of life.

Summary

Systematic review and meta-analysis on cannabis in Parkinson's disease; k=23 studies (5 RCTs + 18 non-randomised studies). No convincing evidence for a general cannabis recommendation in PD, but potential benefits identified for tremor, anxiety, pain, sleep quality and quality of life. Call for further well-designed RCTs in these specific areas.

P
PopulationParkinson's disease patients (PD) – pooled sample from randomised and non-randomised studies
I
InterventionCannabis (various forms/cannabinoids) for the treatment of Parkinson's disease
C
ControlPlacebo or control groups (in randomised studies)
O
OutcomeNo convincing evidence for a general recommendation; potential benefit for tremor, anxiety, pain, sleep quality and quality of life
Confidence in the evidence
High

The highest of four GRADE levels, the effect estimate is very reliable.

Quality profile
Sample size ★★★★★
Blinding —
Effect size Mixed
Citations / year ★★★★★
Authors
Urbi B, Corbett J, Hughes I, Owusu MA, Thorning S, Broadley SA, Sabet A, Heshmat S
DOI 10.3233/jpd-212923↗
Design: Meta-Analyse
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Abstract
The legalization of cannabis in many countries has allowed many Parkinson's disease (PD) patients to turn to cannabis as a treatment. As such there is a growing interest from the PD community to be properly guided by evidence regarding potential treatment benefits of cannabis. This systematic review and meta-analysis aims to compile the best available evidence to help guide patients and their family, clinicians and researchers make informed decisions. A systematic search of the literature was conducted in June 2021. Five randomized controlled studies and eighteen non-randomized studies investigated cannabis treatment in PD patients. No compelling evidence was found to recommend the use of cannabis in PD patients. However, a potential benefit was identified with respect to alleviation of PD related tremor, anxiety, pain, improvement of sleep quality and quality of life. Given the relative paucity of well-designed randomized studies, there is an identified need for further investigation, particularly in these areas.
Indication
Further studies on Parkinson Disease
All studies →
A Figura et al. · 2022 · Neurologia i neurochirurgia polska
19 citations
Cannabis in Parkinson's Disease - the patient's perspective versus clinical trials: a systematic literature review.
No benefit demonstrated Systematic Review

Systematische Review zu Cannabis bei Parkinson; k=7 randomisierte Studien identifiziert. Ergebnisse unterstützen KEINE Wirksamkeit von Cannabinoiden bei motorischen Symptomen der Parkinson-Krankheit. Schlussfolgerung: derzeit unzureichende Datenlage für Cannabinoid-Einsatz bei PD-Patienten.

10.5603/pjnns.a2022.0004 View study →
A Liu et al. · 2024 · Movement disorders
19 citations
Short-Term Cannabidiol with Delta-9-Tetrahydrocannabinol in Parkinson's Disease: A Randomized Trial.
No benefit demonstrated RCT

RCT n=61 (CBD/THC n=31, Placebo n=30), 2 Wochen Titration auf finale Dosis 191,8±48,9 mg CBD + 6,4±1,6 mg THC täglich. Primärer Endpunkt motor MDS-UPDRS: Reduktion -4,57 (95% CI -8,11 bis -1,03; p=0,013) in CBD/THC-Gruppe vs. -2,77 (-4,92 bis -0,61; p=0,014) in Placebo; Gruppen-Differenz nicht signifikant: -1,80 (-5,88 bis 2,27; p=0,379). Kein Benefit, möglicherweise verschlechterte Kognition und Schlaf; starker Placebo-Effekt. Nebenwirkungen mild, häufiger in CBD/THC-Gruppe.

10.1002/mds.29768 View study →
A Peball et al. · 2020 · Annals of neurology
118 citations
Non-Motor Symptoms in Parkinson's Disease are Reduced by Nabilone.
Mixed RCT

Phase-II-RCT, n=47 Parkinson-Patienten mit stabiler Motorik aber störenden Non-Motor-Symptoms (NMS, MDS-UPDRS-I ≥4). Open-label Nabilone-Titration (0,25–1 mg 2×/d), dann Randomisierung Responder zu Nabilone vs. Placebo (n=19). Primärer Endpunkt MDS-UPDRS-I nach 4 Wochen: Placebo-Gruppe verschlechterte sich um 2,63 Punkte (95% CI 1,53–3,74, p=0,002), Nabilone-Gruppe nur um 1,00 Punkte (95% CI −0,16–2,16, p=0,280); Differenz 1,63 Punkte (95% CI 0,09–3,18, p=0,030, Effektgröße 0,66). Positive Effekte v.a. auf Angst und nächtliche Schlafprobleme. 77% AEs in Titrationsphase (meist transient), keine schwerwiegenden AEs.

10.1002/ana.25864 View study →

The impediment to action advances action. — Marcus Aurelius