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Classic Psychedelic Coadministration with Lithium, but Not Lamotrigine, is Associated with Seizures: An Analysis of Online Psychedelic Experience Reports

Sandeep M. Nayak, Natalie Gukasyan, Frederick S. Barrett, Earth Erowid, Fire Erowid, Roland R. Griffiths

Pharmacopsychiatry August 4, 2021 DOI: 10.1055/a-1524-2794 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Retrospective analysis of online reports Peer reviewed
Sample size 96
Population Individuals reporting classic psychedelic use with mood stabilizers on Erowid.org, Shroomery.org, and Reddit.com
Intervention LSD or psilocybin)
Keywords Psychedelics Hallucinogens Entheogens Psychotropic drugs Medication interactions Pharmacodynamic interactions Drug-drug interactions Lithium Lamotrigine Seizure risk Epilepsy risk Convulsion danger Seizure potential Mood stabilizers Psychotropic medications Psychiatric drugs Mood-regulating agents
Citations 67
Key points 47% of lithium plus psychedelic reports involved seizures, while none of the lamotrigine plus psychedelic reports did.

Abstract

Abstract Introduction Psychedelics show promise in treating unipolar depression, though patients with bipolar disorder have been excluded from recent psychedelic trials. There is limited information on the use of classic psychedelics (e. g., LSD or psilocybin) in individuals using mood stabilizers to treat bipolar disorder. This is important to know, as individuals with bipolar depression may attempt to treat themselves with psychedelics while on a mood stabilizer, particularly given enthusiastic media reports of the efficacy of psilocybin for depression.

Methods: This study analyzed reports of classic psychedelics administered with mood stabilizers from 3 websites (Erowid.org, Shroomery.org, and Reddit.com).

Results: Strikingly, 47% of 62 lithium plus psychedelic reports involved seizures, and an additional 18% resulted in bad trips while none of 34 lamotrigine reports did. Further, 39% of lithium reports involved medical attention. Most of the lamotrigine reports (65%) but few (8%) of the lithium reports were judged to not affect the psychedelic experience.

Discussion: Although further research is needed, we provisionally conclude that psychedelic use may pose a significant seizure risk for patients on lithium.