SPECIALTY TOPICS · GUIDE
Mania and Bipolar-Related Concerns
Content last updated . This page has not been medically reviewed.
Back to Psychedelic TherapyUrgent help first
Mania can bring little sleep, racing thoughts, risky decisions and loss of judgment. If someone is in danger, call 911 in the US. For suicidal thoughts, call or text 988 (US Suicide & Crisis Lifeline). For a seizure, severe confusion or a possible poisoning, call 911 or Poison Help at 1-800-222-1222. This page is education only. Never stop or change a prescribed medicine because of anything here; talk with the prescriber.Why bipolar disorder matters here
Bipolar disorder involves episodes of depression and of mania (a period of unusually high energy, mood and activity) or hypomania (a milder form). Psychedelics change mood and arousal, so researchers ask whether they can trigger mania, especially in people with bipolar disorder or a family history of it. Evidence labels used: established, mixed, insufficient evidence, evidence of harm.What the sources report
The rates are not comparable across study types: the 5.8% and 30% figures combine different outcomes and very different groups of people, so they should not be read as one risk.
Trial exclusions. NIDA says participants with previously diagnosed psychosis or bipolar disorder, and sometimes other mental illnesses, are excluded from modern psychedelic research as a precaution. [2] A 2024 review notes that most modern psilocybin trials have excluded people with a family history of bipolar disorder, and argues for a risk-stratified approach rather than blanket exclusion; this is the authors' proposal, and it relies on case studies and surveys because trial data are missing. [3]
Lithium and other mood stabilizers. In an analysis of online experience reports (not clinical data), 47% of 62 reports of classic psychedelics taken with lithium involved seizures, compared with none of 34 reports involving lamotrigine. The authors provisionally concluded that psychedelic use may pose a significant seizure risk for people on lithium. [4] These are unverified self-reports, so the true rate is unknown. Label: evidence of harm (reports), insufficient evidence for rates. See psychedelic drug interactions and toxicology.
What is not known
- Proper evidence not found for the effect of any single psychedelic on bipolar disorder in randomized trials, because such trials have excluded these participants. What exists is observational.
- Long-term risk after repeated exposure is not established. [1]
Who should talk with a clinician first
People with bipolar disorder or a close relative with it, and anyone with a history of mania, should discuss any interest in these substances, including research participation, with a clinician. See talking with a health professional. Related pages: psychosis vulnerability, screening and eligibility in clinical research and psychedelic adverse effects and contraindications.Frequently asked questions
Can psychedelics trigger mania?
A 2026 systematic review found manic symptoms were typically acute and self-limited when they occurred, with higher risks in people with bipolar I disorder, family vulnerability, polysubstance use and unsupervised use. [1]
Why do trials exclude people with bipolar disorder?
As a precaution, according to NIDA. [2]
Does a family history of bipolar disorder rule someone out?
Most modern psilocybin trials excluded it. Some researchers argue for case-by-case risk assessment, but this is a proposal, not a rule. [3]
Is it dangerous to combine psychedelics with lithium?
Online reports link the combination with seizures in many cases, but these are unverified. [4]
Does bipolar disorder always mean higher risk?
The review found higher risk in people with bipolar I disorder, but the evidence is mostly observational and individual risk cannot be predicted. [1]
References
- Eskinazi M et al. Psychedelic-induced hypomania and mania: a systematic review and meta-analysis. Mol Psychiatry 2026. Read 2026-10-22.
- National Institute on Drug Abuse. Psychedelic and Dissociative Drugs. Read 2026-10-22.
- Downey AE et al. A plea for nuance: should people with a family history of bipolar disorder be excluded from clinical trials of psilocybin therapy?. Psychedelic Med 2024. Read 2026-10-22.
- Classic psychedelic coadministration with lithium, but not lamotrigine, is associated with seizures: an analysis of online psychedelic experience reports. Pharmacopsychiatry 2021. Read 2026-10-22.