3-FMC (3-fluoromethcathinone) or 3-CMC (3-chloromethcathinone) ? A certain letter i picked up contains a religious symbol that has 6 sharp edges. I don't know it very well but maybe it's not atomic hexagramm. How it goes, it's from Asia, from area where is no oppression or something.
3-FMC
Encyclopedic
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 3 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 18 combo interactions documented
- classified Research-chemical
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 3 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 18 combo interactions documented
- classified Research-chemical
Aliases: 3-fluoromethcathinone
Summary
Extremely caustic to nasal mucosa; users report intense burn and chronic rhinitis after repeated insufflation. Strong vasoconstriction requires monitoring extremity temperature. Severe hyponatremia reported in prolonged binges; maintain balanced electrolyte intake.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 25-50mg | 50-100mg | 100-150mg | 150mg+ |
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Oral | 10-30 min | 15-30 min | 60-90 min | 1-2 hrs | 2-4 hrs |
| Insufflated | 2-10 min | 5-15 min | 60-90 min | 1-2 hrs | 2-4 hrs |
| Rectal | 5-20 min | 10-20 min | 60-90 min | 1-2 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)
Empathogen
4.9
Moderate+
5/10
Moderate stimulation with mild euphoria, sensory enhancement, and empathy
Empathy / Social Openness
×3
4
enhanced sociability
increased sociability
Euphoria / Mood Elevation
×2
5
euphoria
mood lift
Stimulation
×1
7
stimulation
increased energy
teeth grinding
Sensory Enhancement
×1
5
tactile enhancement
increased libido
Stimulant
4.9
Moderate+
5/10
Strong anxiety/jitters with moderate euphoria, mild stimulation and focus
Stimulation / Energy
×3
5
stimulation
increased energy
Euphoria / Mood Lift
×2
7
euphoria
mood lift
motivation enhancement
Focus / Productivity
×2
5
focus enhancement
motivation enhancement
Anxiety / Jitters
×1
10
anxiety
paranoia
teeth grinding
bruxism
sweating
Add to PsychonautWiki Journal
The PsychonautWiki Journal logging app doesn't include every substance. To track 3-FMC there, start adding an ingestion, search for the name, and choose to add it as a custom substance. Paste these values:
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Import this file as custom substances
and you get "3-FMC (Substance Search)" with every
route's full dose ladder and timeline, no typing. Works on iOS and
Android (v15+); the format is confirmed by the app's
developer. The manual values below work for older
versions.
Name
3-FMC
Unit
mg
Description
3-FMC Source: SubstanceSearch (substancesearch.com) Oral dose (mg): light 25-50 · common 50-100 · strong 100-150 · heavy 150+ Insufflated dose (mg): threshold 5-10 Rectal dose (mg): threshold 10-20 Oral duration: onset 10-30m · come-up 15-30m · peak 1-1.5h · offset 1-2h · total 2-4h · after-effects 2-6h Insufflated duration: onset 2-10m · come-up 5-15m · peak 1-1.5h · offset 1-2h · total 2-4h · after-effects 2-6h Rectal duration: onset 5-20m · come-up 10-20m · peak 1-1.5h · offset 1-2h · total 2-4h · after-effects 2-6h Note: ranges are harm-reduction guidance, not a prescription. Start low, go slow, and test your substances.
Tip: for quicker logging you can also add a Custom Unit in the app, e.g. common dose ~ 75 mg (Oral).
The app keeps custom substances simple, so the full dose ranges live in the description text above. Ranges are harm-reduction guidance, not a prescription.
Tolerance
Build-up
develops rapidly, often within a single session; compulsive redosing common
Reset
a few days for acute tolerance
Tolerance Decay
Full tolerance
1d
Half tolerance
7d
Baseline
~30d
Acute tolerance: develops within a single session — the reset numbers above apply after sustained heavy use, not after one binge. Within-session tachyphylaxis usually resets largely overnight.
Cathinone stimulants often exhibit rapid within‑session tolerance with partial recovery over 1–2 weeks and nearer‑baseline by 4–6 weeks; values are heuristic from community reports and analogous agents, not formal PK/PD data.
Cross-Tolerances
Effects
Positive
- Stimulation
- Increased energy
- Increased energy/alertness
Negative
- Teeth grinding
- Bruxism
- Sweating
- Insomnia
- Weight loss
- Hyperthermia
- Decreased need for sleep
- Decreased appetite
- Disturbed sleep patterns
- Itchiness
Positive
- Euphoria
- Enhanced sociability
- Focus enhancement
- Motivation enhancement
- Increased sociability
- Mood lift
Negative
- Compulsive redosing
- Anxiety
- Paranoia
- Irritability
- Aggressiveness
- Talkativeness
- Time distortion
- Excessive talking
- Moodiness
Positive
- Increased libido
- Tactile enhancement
- Increased music appreciation
- Tracers
Negative
- Appetite suppression
- Light sensitivity
- Dehydration
- Disinhibition
- Increased sexuality
- Visual and auditory hallucinations
Combinations
Cross-Check 3-FMC with another substanceCommunity Trip Reports
Anecdotal first-person accounts from Reddit, Erowid, and Bluelight. Click a source to expand. Reports are harm-reduction context, not medical guidance. Tags summarise each author's own verdict — how reports are classified.
Bluelight 1 thread 1 neutral visit
3-FMC's nerd page
Pharmacology, chemical data, effect profiles, and more
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Helpful Links
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