Library
4-FPP
A piperazine derivative that has been reported to have mild pyschedelic effects, and also empathogen qualities. It has been sold in many branded legal highs.
Also known as: PFPP, Para-Fluorophenylpiperazine
Classification
- Chemical: Piperazine
- Psychoactive: Entactogen
- Psychoactive: Psychedelic
- Psychoactive: Stimulant
- Tag: Empathogen
- Tag: Tentative
Effects
- Sedation
- Pupil Dilation
- Jaw Tension
- Nausea
- Somatic Heaviness
- Vasoconstriction
- Empathy Enhancement
- Emotional Warmth
- Anxiety Suppression
- Euphoria
- Thought Loop
- Dizziness
- Closed Eye Visuals
- Open Eye Visuals
- Patterning
- Color Enhancement
- Increased Music Appreciation
- Brightness Enhancement
Routes of Administration
Oral
Dosage
- Common: 40-80 mg
- Light: 20-40 mg
- Strong: 80-150 mg
- Heavy: 150 mg
- Threshold: 10–20 mg
Duration
- Onset: 0.25-0.75 h
- Peak: 1-3 h
- Offset: 3-7 h
- After Effects: 6-14 h
- Total Duration: 4-8 h
Insufflated
Dosage
- Heavy: 70+ mg
- Light: 10–20 mg
- Common: 20–40 mg
- Strong: 40–70 mg
- Threshold: 5–10 mg
Duration
- Onset: 0.083-0.25 h
- Peak: 0.5-2 h
- Offset: 2-5 h
- After Effects: 4-12 h
- Total Duration: 3-6 h
Rectal
Dosage
- Heavy: >90 mg
- Light: 15–30 mg
- Common: 30–60 mg
- Strong: 60–90 mg
- Threshold: 10 mg
Duration
- Onset: 0.15-0.33 h
- Peak: 1-2.5 h
- Offset: 2.5-5 h
- After Effects: 5-14 h
- Total Duration: 4-7 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
This static page is intended as a readable non-JS and prerender-friendly library export.
