4F-NEB
Summary
The 4-Fluoro analogue of N-Ethylbuphedrone (NEB) is a part of the cathinone class.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Insufflated | 50-75mg | 75-150mg | 150-250mg | 250mg+ |
| Oral | 75-100mg | 100-150mg | 150-300mg | 300mg+ |
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Peak |
|---|---|---|
| Insufflated | 5-10 min | 0.83-1.67 hrs |
| Oral | 15-30 min | 1.5-3 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
6.5
Strong
6/10
Strong euphoria and anxiety/jitters with moderate focus and stimulation
Stimulation / Energy
×3
6
stimulation
wakefulness
alertness enhancement
Euphoria / Mood Lift
×2
10
physical euphoria
euphoria
cognitive euphoria
motivation enhancement
Focus / Productivity
×2
7
focus enhancement
motivation enhancement
thought acceleration
Anxiety / Jitters
×1
10
anxiety
increased heart rate
teeth grinding
vasoconstriction
Based on reports from:
Tolerance
Build-up
develops rapidly, often within a single session; compulsive redosing common
Reset
a few days for acute tolerance
Tolerance Decay
Full tolerance
1h
Half tolerance
4d
Baseline
~5d
Effects
Positive
- Stimulation
- Physical euphoria
Negative
- Increased heart rate
- Vasoconstriction
- Insomnia
- Teeth grinding
- Pupil dilation
- Nausea
- Increased perspiration
- Decreased appetite
Positive
- Alertness enhancement
- Euphoria
- Wakefulness
- Motivation enhancement
- Cognitive euphoria
- Focus enhancement
Negative
- Anxiety
- Talkativeness
- Time distortion
- Thought acceleration
Positive
- Increased music appreciation
- Tactile enhancement
- Increased libido
- Color enhancement
- Enhanced tactile sensation
Negative
- Light sensitivity
- Appetite suppression
- Dehydration
- Disinhibition
- Drifting
Combinations
4F-NEB's nerd page
Pharmacology, chemical data, effect profiles, and more
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