[Erowid Note: Two of two samples of material sold as 2C-EF and analyzed by Erowid's DrugsData service were actually other 2C- compounds.] 2C-EF - First Time - 7-4-2019 - "Smooth As Silk and Warm Like Sunshine" By Xorkoth I've been interested in 2C-EF ever since our dear fastandbulbous synthesized it and a few reports g...
2C-EF
Encyclopedic
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 1 source
- 1 ROA with full dose ladder
- duration data present
- 18 combo interactions documented
- classified Research-chemical
- dose data not in PW/TripSit (unverifiable)
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 1 source
- 1 ROA with full dose ladder
- duration data present
- 18 combo interactions documented
- classified Research-chemical
- dose data not in PW/TripSit (unverifiable)
Summary
Extremely limited human data exists for 2C-EF. Start with low doses and verify substance identity via reagent testing or spectroscopy. Avoid combining with serotonergic agents or lithium.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 4-8mg | 8-12mg | 12-16mg | 16mg+ |
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Peak | Offset | Total |
|---|---|---|---|---|
| Oral | 0.5-2 hrs | 2-4 hrs | 4-8 hrs | 8-14 hrs |
Effect Profile
8 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Psychedelic
5.8
Strong
6/10
Strong visuals with moderate body load, mild headspace
Visual Intensity
×3
10
visual geometry
color enhancement
drifting
tracers
pattern recognition enhancement
color shifting
+1 more
Headspace Depth
×3
4
introspection
time distortion
confusion
Auditory Effects
×1
0
Body Load / Somatic Effects
×1
6
nausea
muscle tension
increased heart rate
Based on reports from:
Tolerance
Build-up
develops rapidly after a single use (serotonergic psychedelic)
Reset
7β14 days for baseline
Tolerance Decay
Half tolerance
7d
Baseline
~14d
Pattern inferred from general 5βHT2A psychedelic tolerance: acute nearβcomplete tolerance same day; partial recovery over ~3β7 days; baseline by ~1β2 weeks. Data quality: anecdotal/analogy.
Cross-Tolerances
Effects
Aggregated from 8 Erowid experience reports
Positive Effects 7
Euphoria
87.5%
70%
Color Enhancement
62.5%
70%
Empathy
62.5%
70%
Music Enhancement
62.5%
70%
Tactile Enhancement
50.0%
70%
Introspection
50.0%
70%
Stimulation
37.5%
70%
Adverse Effects 5
Muscle Tension
50.0%
70%
Confusion
37.5%
70%
Anxiety
37.5%
70%
Jaw Clenching
37.5%
70%
Nausea
37.5%
70%
Combinations
Cross-Check 2C-EF 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 8 reports 7 neutral 1 cautionary visit
[Erowid Note: Two of two samples of material sold as 2C-EF and analyzed by Erowid's DrugsData service were actually other 2C- compounds.] P Β 155lb male Β experienced with psychedelics (me) Β 15mg 2C-EF R Β 155lb male Β psychedelic naΓ―ve Β 15mg 2C-EF A Β 100lb female Β psychedelic naΓ―ve Β 15mg 2C-EF B Β 200lb male Β ps...
I donΒt usually write reviews, but since this compound has very few experience reports available, this might be useful as a guide for others. First, my background: 35 years old, male, 90 kg, I exercise regularly. Keep that in mind, because this compound feels a bit heavy on the cardiovascular side.
[Erowid Note: Two of two samples of material sold as 2C-EF and analyzed by Erowid's DrugsData service were actually other 2C- compounds.] A footnote in Pihkal reckons that 2C Β EF would be a winner if anyone ever made it & the dosage would likely be between 12 and 24 mgs.
Erowid Note: Two of two samples of material sold as 2C-EF and analyzed by Erowid's DrugsData service were actually other 2C- compounds.] So yesterday me and my gf went to a club and wanted to try those 2c-ef 10mg pellets from a famous clearnet vendor.
[Erowid Note: Two of two samples of material sold as 2C-EF and analyzed by Erowid's DrugsData service were actually other 2C- compounds.] 8/12/18 6:30: 3mg 2c-ef dosed orally 6:45: actually feeling slightly drowsy.
I reviewed several reports on lower doses of this substance, which coincided with its recent appearance in the research chemical market. Users experimented with smaller amounts but generally agreed that 20 mg would be suitable. Shulgin also speculated on a dosage range of 20-40 mg for 2C-EF.
T+0:00 - Dose 20 mg 2C-EF, same batch as before. I expected something intense but manageable like last time, even though this is far beyond the typical dosing range for this psychedelic, in the back of my head I had my concerns about the safety, but since I've done this before I felt some confidence.
Bluelight 6 threads 6 neutral visit
2C-EF - First Time - 7-4-2019 - "Smooth As Silk and Warm Like Sunshine" By Xorkoth **NOTE: I later discovered via GC/MS confirmation that this was actually a blend of 2C-C, 2C-T-2, and 2C-T-7, being sold as 2C-EF by an unscrupulous longtime vendor.
My first trial with 2C-EF, as best as I can trust. Has not been sent off for testing yet but vendor has a long standing reputation spanning near a decade. Some intro stuff, if you'd like to skip, find the cat...
A footnote in Pihkal reckons that 2C ?β¬β EF would be a winner if anyone ever made it & the dosage would likely be between 12 and 24 mgs. I was told the dosage ought to be between 6 and 12 mgs which is probably about right T +O.OO 10mgs dosed in juice for me and my friend whom we?β¬β’ll call Kevin.
2C-EF ~14 mg 12:30 Took with juice. 12:45 Some of the normal stirrings that something is going to happen. 1:00 Starting to feel some intense pleasure/body high. Head is feeling fuzzy. Very aphrodiasiac-like. 1:15 Some breathing of curtains happening. Still very pleasurable and smooth come up. No anxiety at all.
Well the Autumn equinox came and I had a yearning to try a new psychedelic. Originally it was to be 4-allyloxy-3,5-dimethoxthyphenethylamine, bute fate conspired to make it not so. In the end I went with 2C-EF and lordy was it a good decision (nobody mention the sychrononicity word!~).
I tried 28 mgs of 2c-ef recently, which had been lab tested and verified, and...wow! What a powerful substance! I decided on 28 mgs based off of reports and comparsons to 2c-e.
2C-EF's nerd page
Pharmacology, chemical data, effect profiles, and more
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