Library
4-MEPPP
4-MEPPP is a pyrrolidinophenone stimulant that acts primarily as a dopamine reuptake inhibitor with minimal serotonergic activity. First sold in Germany in the late 1990s, it has been detected in bath salt blends such as NRG-3. User reports describe moderate stimulation with enhanced sociability and talkativeness at 20-40 mg insufflated, with rapid onset and 1-2 hour duration. A notable ceiling effect occurs where additional doses increase side effects more than benefits. The compound is often mislabeled or mixed with other substances in the market.
Also known as: Mppp, 4-mαppp, Bk-mbdp, Bk-methyl-k
Classification
- Chemical: Cathinone
- Psychoactive: Psychedelic
- Psychoactive: Stimulant
- Tag: Habit-Forming
- Tag: Pyrrolidine
- Tag: Pyrrolidinophenone
- Tag: Research-Chemical
Effects
- Stimulation
- Increased Energy
- Pupil Dilation
- Increased Heart Rate
- Jaw Tension
- Restlessness
- Enhanced Sociability
- Talkativeness
- Motivation Enhancement
- Focus Enhancement
- Euphoria
- Anxiety
- Appetite Suppression
- Light Sensitivity
- Disinhibition
- Tactile Enhancement
- Spontaneous Physical Sensations
- Vibrating Vision
Routes of Administration
Oral
Dosage
- Threshold: 10 mg
- Light: 10-30 mg
- Common: 30-60 mg
- Strong: 60-100 mg
- Heavy: 100 mg
Duration
- Onset: 0.33-0.75 h
- Peak: 0.5 h
- Offset: 1-2 h
- After Effects: 4-12 h
Insufflated
Dosage
- Threshold: 5 mg
- Light: 5-15 mg
- Common: 15-40 mg
- Strong: 40-60 mg
- Heavy: 60 mg
Duration
- Onset: 0.02-0.08 h
- Peak: 0.5 h
- Offset: 1-2 h
- After Effects: 4-12 h
Rectal
Dosage
- Threshold: 5 mg
- Light: 5-20 mg
- Common: 20-50 mg
- Strong: 50-80 mg
- Heavy: 80 mg
Duration
- Onset: 0.08-0.25 h
- Peak: 0.5 h
- Offset: 1-2 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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