HereΒs my first experience with 3-FEA, having experience with various other rcΒs and most drugs short of about meth and heroin. Well itΒs Christmas Eve morning and still have all shoppin to do to make Christmas dinner tomorrow and get wrapping paper and versions other things.
3-FEA
Encyclopedic
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 5 corroborating sources
- 2 ROAs with full dose ladders
- duration data present
- 18 combo interactions documented
- PubChem toxicity data
- classified Tentative
- classified Research-chemical
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 5 corroborating sources
- 2 ROAs with full dose ladders
- duration data present
- 18 combo interactions documented
- PubChem toxicity data
- classified Tentative
- classified Research-chemical
Summary
3-Fluoroethamphetamine (also known as 3-FEA) is a novel ring-substituted amphetamine compound that produces a mixture of entactogenic and stimulant effects when administered. 3-FEA is structurally related to a series of designer fluorinated substituted amphetamines that originally included compounds such as 2-FA, 2-FMA, 3-FA, 4-FMA, 4-FA. Like its parent compound 3-FA, the pharmacological, toxicological, and subjective effects of 3-FEA in humans have yet to be mapped out in detail.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 20-35mg | 35-70mg | 70-90mg | 90mg+ |
| Insufflated | 20-35mg | 35-60mg | 50-60mg | 60mg+ |
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Oral | 20-60 min | 30-60 min | 1.5-2.5 hrs | 2-3 hrs | 4-6 hrs |
| Insufflated | 5-15 min | 5-10 min | 30-60 min | 30-60 min | 4-6 hrs |
Effect Profile
5 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Empathogen
5.1
Moderate+
5/10
Strong sensory enhancement with moderate stimulation and euphoria, low empathy
Empathy / Social Openness
×3
3
empathy, affection, and sociability enhancement
Euphoria / Mood Elevation
×2
6
physical euphoria
cognitive euphoria
Stimulation
×1
7
stimulation
wakefulness
teeth grinding
increased heart rate
Sensory Enhancement
×1
8
tactile enhancement
increased libido
Stimulant
4.4
Moderate
4/10
Strong anxiety/jitters with moderate euphoria, mild stimulation, low focus
Stimulation / Energy
×3
5
stimulation
wakefulness
Euphoria / Mood Lift
×2
7
physical euphoria
cognitive euphoria
motivation enhancement
Focus / Productivity
×2
3
motivation enhancement
thought acceleration
Anxiety / Jitters
×1
10
anxiety
teeth grinding
increased heart rate
vasoconstriction
Based on reports from:
Tolerance
Build-up
develops over days to weeks of regular use
Reset
3β7 days for acute; 1β3 weeks for full reset
Tolerance Decay
Full tolerance
3d
Half tolerance
10d
Baseline
~30d
Acute tolerance: develops within a single session β the reset numbers above apply after sustained heavy use, not after one binge. Within-session tachyphylaxis usually resets largely overnight.
Rapid subjective tolerance and binge patterns are reported with related stimulants; spacing use by several weeks minimizes tolerance and comedown severity. Data are primarily anecdotal.
Cross-Tolerances
Effects
Aggregated from 5 Erowid experience reports
Positive Effects 2
Stimulation
100.0%
70%
Euphoria
60.0%
70%
Adverse Effects 0
Combinations
Cross-Check 3-FEA 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.
Erowid 4 reports 3 neutral 1 cautionary visit
Before attempting to use this substance in a party-like setting I decided to spend a night on exploring the effects during a quite night at home. I did some research and read the little online information I could find on this substance. Nothing very alarming came up so I went for it. Substance: 3-FEA.
I invited two friends to join me while I tried this fairly obscure research chemical for the first time. It is supposed to be an entactogen and I figured it would be nice to have some company as I explored the substance.
Set/Setting: feeling quite good before the trip, but got work to do, should prepare a 20 mind presentation for university so I hope to stay functional for that. (I study chemistry).
Bluelight 1 thread 1 neutral visit
So I finally decided to give in to my curiosity and try some of the 3-FEA I had been sitting around for a few months. I am writing this, as there seems to be a lack of reports on this substance especially of users with no / little tolerance. About me: I am a male in his 30s with a weight of 90 kg.
3-FEA's nerd page
Pharmacology, chemical data, effect profiles, and more
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Helpful Links
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