• Tremor, stiffness, movement: Not established. A 2026 analysis of 10 trials with 719 patients found no benefit.
• Pain, sleep, mood, memory: Not established in the same analysis.
• Anxiety in stressful situations: Limited. One 24-patient study found a single CBD dose reduced anxiety and tremor during a public-speaking task.

Good to know: THC can worsen balance and low blood pressure on standing, both common in Parkinson’s.

What to ask for: No product is recommended for Parkinson’s symptoms. If cannabis is used for another reason, a CBD-dominant product is less likely to affect balance.