Summary
4F-EPH is a novel research chemical with minimal human use history and unknown long-term toxicity. First reported death occurred in 2016 involving polydrug use. The substance is notably less caustic to nasal cavities than ethylphenidate but still causes mild to moderate damage with intranasal use; users should perform sterile saline nasal rinses after insufflation. The substance was controlled in the UK as a Class B drug on May 31, 2017, and is illegal in several other countries including Germany, Switzerland, and Turkey. Always use accurate weighing equipment and practice proper harm reduction.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 5-10mg | 10-15mg | 15-30mg | 30mg+ |
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Peak | After Effects | Total |
|---|---|---|---|---|
| Oral | 10-25 min | 2-3 hrs | 1-12 hrs | 300-0 min |
Tolerance
Build-up
develops rapidly after a single use (serotonergic psychedelic)
Reset
7–14 days for baseline
Effects
Positive
- Stimulation
- Physical euphoria
Negative
- Pupil dilation
- Vasoconstriction
- Increased heart rate
- Increased blood pressure
- Teeth grinding
- Temporary erectile dysfunction
- Spontaneous bodily sensations
- Nasal damage
- Stamina intensification
Positive
- Cognitive euphoria
- Focus enhancement
- Empathy, affection, and sociability enhancement
- Motivation enhancement
- Analysis enhancement
- Wakefulness
Negative
- Depression
- Anxiety
- Irritability
- Thought deceleration
- Cognitive fatigue
- Motivation depression
- Thought acceleration
- Focus intensification
Positive
- Increased music appreciation
- Increased libido
- Perception of bodily lightness
Negative
- Appetite suppression
- Dehydration
- Decreased libido
- Orgasm depression
- Light sensitivity
- Appetite Suppression
- Spontaneous physical sensations