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
- 29 combo interactions documented
- toxicity data (PsychonautWiki)
- 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
- 29 combo interactions documented
- toxicity data (PsychonautWiki)
- 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
Sources
Oral
Dose ladder — dose.wiki, PsychonautWikiInsufflated
Dose ladder — dose.wiki, PsychonautWikiOnset, 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 (0–10) 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 and focus with strong anxiety/jitters, 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
Cross-Tolerances
Empathogens
Effects
Effect glossary — · full glossary
Positive
Negative
Positive
Negative
Positive
Negative
- Visual and auditory hallucinations
Combinations
Cross-Check 2-FMA with another substanceCommunity Trip Reports
Anecdotal first-person accounts from Reddit, Erowid, Bluelight, and Dose.wiki. 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 5 threads 3 positive 2 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".
Dose.wiki 1 report 1 neutral visit
2-FMA feels like it's exactly what I was looking for in an amph, without the euphoria or abuse potential that Adderall gives me. It feels like it's given me a lot more potential towards handling my ADHD properly, and look forward to judging to long-term…
2-FMA's nerd page
Pharmacology, chemical data, effect profiles, and more
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Helpful Links
Add missing routes to PsychonautWiki Journal
The PsychonautWiki Journal app already has 2-FMA, but its built-in entry only covers Insufflated, Oral. Here are the other routes we have data for. You can't edit a built-in substance, but you can add a Custom Unit for any of these routes to log it.
⬇ Download import file
Import this file as custom substances
and you get "2-FMA (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.
Duration (reference)
2-FMA: routes the PsychonautWiki Journal app is missing Source: SubstanceSearch (substancesearch.com) Rectal duration: onset 15-30m · come-up 20-30m · peak 2-3h · offset 2-3h · total 6-8h · after-effects 4-12h Intravenous duration: onset 0-1m · come-up 1-5m · peak 1.5-3h · offset 1.5-2h · total 6-8h · after-effects 4-12h Note: ranges are harm-reduction guidance, not a prescription. Start low, go slow, and test your substances.
Ranges are harm-reduction guidance, not a prescription.
Report an issue or suggest an edit
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