My history with stimulants is a somewhat sordid one. I've tried/abused m1, 4-mmc, 4-FA, MDPV, MDMA, 4-FMA, butylone and probably more I'm forgetting. Until recently, I thought 4-FA was the greatest thing since blotter acid...and then I found 2-FMA Background: I live in Las Vegas and have grown somewhat jaded to the gli...
2-FMA
Well-documented
Well-documented
Multiple authoritative sources agree on dosing and effects.
- 5 corroborating sources
- 2 ROAs with full dose ladders
- duration data present
- 18 combo interactions documented
- PubChem toxicity data
- classified Research-chemical
Well-documented
Multiple authoritative sources agree on dosing and effects.
- 5 corroborating sources
- 2 ROAs with full dose ladders
- duration data present
- 18 combo interactions documented
- PubChem toxicity data
- classified Research-chemical
Aliases: 2-fluoro-methamphetamine, 2fma
Summary
2-Fluoromethamphetamine (also known as 2-FMA) is a novel stimulant substance of the amphetamine class. It is a structural analog of methamphetamine and is related to 2-FA, 3-FA, and 4-FMA. 2-FMA produces its stimulant effects through action at dopamine and norepinephrine receptors in the brain.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 5-15mg | 15-30mg | 30-50mg | 50mg+ |
| Insufflated | 5-15mg | 15-30mg | 30-50mg | 50mg+ |
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Oral | 30-60 min | 15-40 min | 2.5-4 hrs | 2-3 hrs | 4-6 hrs |
| Insufflated | 20-40 min | 10-20 min | 1-3 hrs | 1.5-3 hrs | 6-8 hrs |
| Rectal | 15-30 min | 20-30 min | 2-3 hrs | 2-3 hrs | 6-8 hrs |
| Intravenous | 0-1 min | 1-5 min | 1.5-3 hrs | 1.5-2 hrs | 6-8 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)
Stimulant
6.6
Strong+
7/10
Strong euphoria, anxiety/jitters, and focus with mild stimulation
Stimulation / Energy
×3
5
stimulation
wakefulness
Euphoria / Mood Lift
×2
10
physical euphoria
cognitive euphoria
euphoria
mood lift
motivation enhancement
Focus / Productivity
×2
9
focus enhancement
analysis enhancement
motivation enhancement
thought acceleration
Anxiety / Jitters
×1
10
anxiety
paranoia
increased heart rate
teeth grinding
bruxism
vasoconstriction
+1 more
Based on reports from:
Tolerance
Build-up
develops over days to weeks of regular use
Reset
3–7 days for acute; 1–3 weeks for full reset
Tolerance Decay
Full tolerance
1d
Half tolerance
12d
Baseline
~21d
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.
Cross-Tolerances
Stimulants
Amphetamine
75%
Methamphetamine
75%
Lisdexamfetamine
75%
2-FA
75%
3-FA
75%
4-FMA
75%
Methylphenidate
75%
Empathogens
4-FA
40%
Effects
Positive
- Stimulation
- Increased energy/alertness
- Physical euphoria
- Bronchodilation
Negative
- Dry mouth
- Increased perspiration
- Pupil dilation
- Increased heart rate
- Increased blood pressure
- Vasoconstriction
- Teeth grinding
- Weight loss
- Sweating
- Bruxism
- Nausea
- Headache
- Temporary erectile dysfunction
- Abnormal heartbeat
- Restless legs
- Decreased need for sleep
- Decreased appetite
- Disturbed sleep patterns
- Itchiness
- Frequent urination
- Increased bodily temperature
- Brightness alteration
- Stamina intensification
Positive
- Focus enhancement
- Motivation enhancement
- Analysis enhancement
- Wakefulness
- Cognitive euphoria
- Euphoria
- Increased sociability
- Mood lift
- Anxiety suppression
Negative
- Anxiety
- Compulsive redosing
- Aggressiveness
- Cognitive fatigue
- Depression
- Irritability
- Thought deceleration
- Emotion suppression
- Delusion
- Paranoia
- Memory suppression
- Depersonalization
- Psychosis
- Motivation depression
- Thought organization
- Time distortion
- Excessive talking
- Moodiness
- Thought acceleration
- Ego inflation
- Focus intensification
Positive
- Bodily control enhancement
- Increased libido
- Tactile enhancement
- Increased music appreciation
Negative
- Appetite suppression
- Dehydration
- Disinhibition
- Increased sexuality
- Visual and auditory hallucinations
- Drifting
- Tactile intensification
Combinations
Cross-Check 2-FMA with another substanceTrip Reports
Community Trip Reports
Anecdotal first-person accounts from Reddit, Erowid, and Bluelight. Click a source to expand. Reports are harm-reduction context, not medical guidance.
Bluelight 5 threads 5 neutral visit
I posted a short 'live report' up here recently of my first experience with 2-fma. I've used it a couple of times since then (mainly over the last couple of days) , and i felt the need to give a kind of de-brief or more indepth look at my experiences with the substance.
Substance: 2-FMA Dose: 50mg Route: Oral T+0:00 – After reading a few other reports i've decided to start off with a dose of 50mg. Quite excited, done 4-FA a couple of days ago for first time in a while and really enjoyed it.
So I got a gram of 2FMA on thursday expecting a meth substitute. (its not.) It has a very unique flavor upon insufflation that tastes very pure and slightly rubbery. I wasn't using a scale, but basically i did small lines of 2FMA with a friend continuously until saturday morning at which time we were out.
I got 1g 2-FMA from a reputable vendor. Placed my order on thursday, and it arrived today (monday) via priority mail. Very discrete and professional packing with an included MSDS, and the actual bag discretely labled "1-(2-fluorophenyl)-N-methylproppan-2-amine".
2-FMA's nerd page
Pharmacology, chemical data, effect profiles, and more
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Helpful Links
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