Library
4F-EPH
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.
Also known as: 4f-tep, 4-fluoroethylphenidate, 4F-Ethylphenidate
Classification
- Chemical: Phenethylamine
- Chemical: Phenidate
- Psychoactive: Stimulant
- Tag: Habit-Forming
- Tag: Research-Chemical
- Tag: substituted phenidate
- Tag: Tentative
Effects
- Stimulation
- Physical Euphoria
- Pupil Dilation
- Vasoconstriction
- Increased Heart Rate
- Increased Blood Pressure
- Cognitive Euphoria
- Focus Enhancement
- Thought Acceleration
- Empathy Affection And Sociability Enhancement
- Motivation Enhancement
- Analysis Enhancement
- Increased Music Appreciation
- Appetite Suppression
- Increased Libido
- Dehydration
- Perception Of Bodily Lightness
- Spontaneous Physical Sensations
Routes of Administration
Oral
Dosage
- Threshold: 5 mg
- Light: 5-10 mg
- Common: 10-15 mg
- Strong: 30-50 mg
- Heavy: 50 mg
Duration
- Onset: 0.2-0.4 h
- Peak: 2-3 h
- After Effects: 4-12 h
Harm Reduction
Check interactions before mixing substances, pay attention to dose spacing and hydration, and treat all dosage guidance as approximate rather than guaranteed safe.
Sources
Substance data is aggregated from the following public harm-reduction and reference sources.
Links
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