Key takeaways:
- Therapy with psilocybin led to enchancment in motor, non-motor and psychiatric signs for as much as 1 month.
- Outcomes counsel that psilocybin remedy in PD warrants additional investigation, researchers wrote.
Therapy with psilocybin was linked to enhancements in motor and non-motor signs of Parkinson’s illness, in addition to related psychiatric circumstances, with sustained outcomes as much as 1 month, outcomes of a pilot examine present.
“Primary science discoveries have generated quite a lot of enthusiasm concerning the potential of psychedelics for Parkinson’s,” Ellen Bradley, MD, assistant professor, division of psychiatry and behavioral sciences, Weill Institute for Neurosciences on the College of California, San Francisco, advised Healio.

“We’ve lacked even preliminary security knowledge in people with PD, or some other neurodegenerative dysfunction. That’s the key hole we needed to fill on this first part of labor,” Bradley mentioned.
Though psychiatric points similar to nervousness and melancholy typically accompany a prognosis of PD and presage practical decline, efficient remedies are few, Bradley and colleagues wrote. Psilocybin has demonstrated some success in therapy of hysteria and melancholy, however its potential in PD remains to be unknown.
The open-label pilot examine examined the protection, efficacy and tolerability of psilocybin in 12 people (imply age 63.2 ± 8.2 years; 58.3% males) recognized with gentle to reasonable PD plus nervousness and/or melancholy. Three preliminary enrollees weren’t handled with dopaminergic medication for PD-related motor signs, with 9 sufferers prescribed a secure carbidopa-levodopa routine.
All individuals acquired two doses of artificial psilocybin: a single 10 mg dose adopted by one 25 mg dose 2 weeks later, supplied the primary dose was well-tolerated. Eight periods of one-to-one psychotherapy interspersed earlier than, throughout and after dosing accompanied the remedies.
Vitals have been assessed at baseline, then at irregular intervals as much as 420 minutes after every psilocybin dose, below medical supervision.
Subjective drug expertise was measured by the 5-Dimensional Altered States of Consciousness (5D-ASC) scale. Security and tolerability with respect to PD signs have been measured at 1 week after the ten mg dose and 1 week and 1 one month following the 25 mg dose utilizing the Motion Dysfunction Society Unified Parkinson’s Illness Score Scale (MDS-UPDRS).
Anxiousness was tracked with the Hamilton Anxiousness Score Scale (HAM-A) and melancholy by the Montgomery-Asberg Melancholy Score Scale (MADRS).
Based on outcomes, sufferers didn’t report any severe opposed occasions or medical interventions that required dosing changes. No signs of psychosis have been worsened. Therapy-emergent opposed occasions occurred in 10 individuals, with essentially the most frequent being nervousness, nausea and elevated blood stress.

Ellen Bradley
The researchers moreover reported that individuals’ subjective expertise trended larger after the 25 mg dose in contrast with the ten mg dose, however not considerably so. Evaluation of 5D-ASC scores from the pilot examine in contrast with a earlier trial of 25 mg psilocybin remedy for main depressive dysfunction indicated larger subjective depth for these enrolled within the pilot examine.
Bradley and colleagues additionally reported important enchancment in each motor signs (MDS-UPDRS Half II) and non-motor signs (MDS-UPDRS Half I) on the 1-month comply with up, -7.5 factors and -13.75 factors, respectively.
Knowledge additional confirmed nervousness (HAM-A) and melancholy (MADRS) have been improved at 1 week put up therapy, with melancholy considerably lessened at 1 month whereas nervousness was not; enhancements for each circumstances, nevertheless, have been sustained as much as 3 months after dosing. Imply change from baseline to 90-day comply with up have been -3.83 factors and -9.33 factors, respectively.
Outcomes from the pilot, Bradley and colleagues wrote, counsel that psilocybin remedy in PD warrants additional investigation. A randomized managed trial, based mostly at UCSF, is scheduled to develop to a second web site at Yale College, with a aim of enrolling 100 individuals, in accordance with a launch associated to the examine.
“These findings are thrilling, however we will’t draw conclusions from a small pilot. We’re now on to the following part, conducting a a lot bigger trial designed to check efficacy and work out psilocybin’s mechanisms of motion in PD,” Bradley advised Healio. “The aim is to get extra focused, efficient therapy choices in sufferers’ fingers as shortly as doable.
Reference:
How ‘magic mushrooms’ might assist Parkinson’s illness sufferers. https://www.eurekalert.org/news-releases/1082246. Revealed April 29, 2025. Accessed Might 2, 2025.
For extra info:
Ellen Bradley, MD, will be reached at ellen.bradley@ucsf.edu and on LinkedIn right here.