This page describes pharmacological agents that may have legal restrictions, side effects, and drug interactions in your jurisdiction. Information is for educational research only — consult a clinician before considering any compound.
Surface here is educational only; do not use without medical supervision. Our editorial verdict is SKIP-FOR-NOW — current cost / risk / redundancy puts it below the line.
Muscimol
Direct GABA-A agonist from Amanita muscaria — rare mechanism (most "GABAergics" are PAMs), but the actual experience is sedation +…
Aliases (5)
Overview
What is Muscimol?
Muscimol is the principal psychoactive constituent of Amanita muscaria mushrooms. It is a potent and selective GABA-A receptor agonist used non-medically for sedation and altered consciousness.
Key Benefits
Produces sedation, anxiolysis, and dream-like states, may aid sleep onset and depth at low doses, and is used recreationally and traditionally in some cultures for ritual or relaxation effects.
Mechanism of Action
Acts as a high-affinity full agonist at GABA-A receptors, particularly delta-subunit-containing extrasynaptic receptors, increasing tonic chloride conductance and producing sedation, ataxia, and dissociative or oneiric subjective effects.
Pharmacokinetics
▸Brand options4 known
Status"Not federally scheduled in US (Louisiana exempt for research only; FL, MS state-level restrictions). Amanita muscaria itself unscheduled federally. FDA position (Dec 2024): muscimol is an unapproved food additive — products containing it are adulterated."
Research Indications
Benzodiazepines / Z-drugs / barbiturates
positive allosteric modulators (PAMs), enhance GABA's effect but don't open channels alone
Theanine, taurine, glycine, "GABA supplements"
indirect / mixed / barely cross BBB / weak modulators
Phenibut, baclofen
GABA-B agonists, completely different receptor family
Peptide Interactions
Additive CNS depression; multiple deaths in case reports involve co-use
Synergistic respiratory depression
GABA-A direct agonism + GABA-B agonism = compounded sedation, dependence on phenibut side worsens
Same — GABA-A + GABA-B layered depression
No real interaction (oral GABA barely crosses BBB) but redundant intent
Compounded CNS depression, respiratory depression
Quality Indicators
Tested third-party COA
Reputable brands publish a Certificate of Analysis for identity, potency, and contaminant testing.
GMP-certified manufacturing
Look for cGMP / NSF / USP certifications on the label.
Proprietary blends
Avoid products that hide individual ingredient amounts inside a "proprietary blend."
No origin or sourcing info
Unbranded or no-COA capsules from anonymous sellers carry quality and adulteration risk.
What to Expect
- Week 1Baseline tolerability. Most chronic-use supplements have no acute signal.
- Week 2-4Subtle baseline shift — sleep quality, mood, recovery markers.
- Week 4-8Reach steady state. Re-assess subjective + objective markers.
- Month 3+Long-term maintenance dose if benefit confirmed; otherwise stop.
Side Effects & Safety
- Common (>10% users): Nausea, vomiting, ataxia, drowsiness, motor impairment, time distortion, residual next-day sedation
- Less common (1-10%): Vivid hallucinations, delirium, autonomic effects (sweating, salivation, mydriasis, dry mouth), urinary retention, paradoxical agitation
- Rare-serious (<1% but worth knowing): Seizures (more common with raw / high ibotenic acid), respiratory depression, coma, cardiovascular collapse, death (FDA NPDS reports cite multiple deaths associated with muscimol/Amanita products 2023-2025)
- Specific watch periods:
- Diamond Shruumz outbreak (mid-2024): 180 illnesses, 73 hospitalizations, 3 potentially associated deaths in 34 states. Subsequent testing showed muscimol present alongside undeclared substances.
- FDA warning letters Dec 2024 + Sept 2025 (Blue Forest Farms 09/11/2025) explicitly reference delirium, seizures, coma, respiratory depression, and death as adverse events.
Quality risk dwarfs pharmacological risk. Even if you trust pure muscimol pharmacology, you cannot trust gas-station gummies. CDC's MMWR (Charlottesville 2023-2024 cluster) found Schedule I substances mixed into nootropic gummies sold as Amanita products.
References
FDA Letter to Industry: Amanita Muscaria (Dec 2024)
official position that muscimol/ibotenic acid/muscarine are unapproved food additives; food containing them is adulterated
View StudyFDA Scientific Memorandum: Amanita Muscaria (9/9/2024)
toxicology and adverse event review supporting enforcement position
View StudyFDA Warning Letter: Blue Forest Farms LLC (09/11/2025)
recent enforcement action citing delirium, seizures, coma, respiratory depression, death
View StudyCDC: Diamond Shruumz outbreak investigation
180 illnesses, 73 hospitalizations, 3 potentially associated deaths (Oct 2024 update); muscimol detected in subset of products
View StudyCDC MMWR: Schedule I Substances in Nootropic Gummies — Charlottesville 2023-2024
adulteration documentation in Amanita gummy market
View StudyNPR: FDA targets mushroom edibles following illnesses and suspected deaths (Dec 2024)
context on enforcement and outbreak
View StudyAmerican Journal of Preventive Medicine: Public Health Response to Unregulated Sales of Amanita muscaria
00163-6/fulltext) — UCSD researchers on 114% search increase 2022-2023, market growth concerns
View StudyJohnston GAR. Muscimol as an Ionotropic GABA Receptor Agonist (2014)
mechanistic review of muscimol's GABA-A pharmacology
View StudyExtrasynaptic δ-GABAA receptors are high-affinity muscimol receptors (PMC)
δ-subunit selectivity and tonic inhibition mechanism
View StudyEmerging Risks of Amanita Muscaria: Case Reports (PMC, 2024-2025)
recent case-report literature on consumer harm
View StudyChange in Ibotenic Acid and Muscimol Contents during Drying, Storing or Cooking (J-Stage)
decarboxylation kinetics relevant to preparation safety
View StudyPsyched Wellness Amanita Muscaria Sleep Study
only commercial entity running formal sleep work; preliminary
View StudyHow was your experience with this compound?
Anonymous · one vote per session · results below at 5+ votes.
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