Ibotenic acid
Aliases: Ibotenate, Premuscimol
Summary
Ibotenic acid is a powerful neurotoxin and the primary psychoactive constituent of Amanita muscaria. It acts as a prodrug to muscimol, which produces most of the sedative and GABAergic effects. Upon ingestion, a portion of ibotenic acid is decarboxylated to muscimol in the body, while substantial amounts are excreted unchanged in urine.
Dose Information
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset |
|---|---|---|---|---|
| Oral | 0.5-2 hrs | 1-2 hrs | 2-4 hrs | 2-4 hrs |
Effect Profile
Scores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Dissociative
3.1
Light+
3/10
Low dissociative depth, mania, and motor impairment
Dissociative Depth
×3
2
consciousness disconnection
Mania / Compulsion
×1
2
euphoria
Insight / Novel Thought
×2
0
Motor / Sensory Impairment
×1
2
ataxia
Based on reports from:
Tolerance
Build-up
develops rapidly after a single use (serotonergic psychedelic)
Reset
7โ14 days for baseline
Tolerance Decay
Full tolerance
0h
Half tolerance
1d
Baseline
~7d
No formal human data on tolerance kinetics for ibotenic acid or muscimol; repeated frequent use is uncommon due to sedation and adverse effects. Anecdotal reports suggest minimal cross-tolerance with muscimol and return to baseline within days to a week; confidence low.
Cross-Tolerances
Muscimol
30%
Effects
Positive
- Muscle relaxation
- Pain relief
Negative
- Ataxia
- Nausea
- Muscle twitching
- Motor impairment
- Sedation
- Sleepiness
- Muscle twitches
- Increased salivation
Positive
- Euphoria
- Cognitive euphoria
- Dream potentiation
Negative
- Confusion
- Delirium
- Drowsiness
- Disorientation
- Retrograde amnesia
- Dream-like state
- Consciousness disconnection
Positive
- Colour shifting
- Increased music appreciation
- Visual distortions
- Auditory distortions
- Sensations of floating
- Dulled perception
- Drifting
- External hallucination
- Internal hallucination
- Spontaneous physical sensations
Combinations
Ibotenic acid's nerd page
Pharmacology, chemical data, effect profiles, and more
→