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. The fluorinated structure may result in slower metabolism compared to 2C-E. Use harm reduction practices including volumetric dosing.
Dose Information
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | After Effects |
|---|---|---|---|---|---|
| Oral | 15-60 min | 30-60 min | 2-4 hrs | 6-8 hrs | 1-2 hrs |
Tolerance
Build-up
develops rapidly after a single use (serotonergic psychedelic)
Reset
7–14 days for baseline
Effects
Positive
- Stimulation
- Mental/physical stimulation
Negative
- Nausea
- Pupil dilation
- Increased heart rate
- Restlessness
- Muscle tension
- Insomnia
- Spontaneous bodily sensations
- Dilated pupils
Positive
- Euphoria
- Analysis enhancement
- Mindfulness
- Empathy enhancement
- Introspection
- Empathy
- Insight
Negative
- Confusion
- Memory suppression
- Time distortion
Positive
- Visual geometry
- Color enhancement
- Tactile enhancement
- Pattern recognition enhancement
- Enhanced tactile sensation
- Tracers
- Color shifting
Negative
- Drifting
- Visual distortions
- Perspective hallucination