4-MEPPP
Aliases: Mppp, 4-mฮฑppp, Bk-mbdp, Bk-methyl-k
Categories
Summary
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.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 10-20mg | 20-40mg | 40-80mg | 80mg+ |
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Peak | Offset | After Effects | Total |
|---|---|---|---|---|---|
| Oral | 20-45 min | 30 min | 1-2 hrs | 4-12 hrs | 180-0 min |
| Insufflated | 1-5 min | 30 min | 1-2 hrs | 4-12 hrs | 180-0 min |
| Rectal | 5-15 min | 30 min | 1-2 hrs | 4-12 hrs | 180-0 min |
Tolerance
Build-up
develops rapidly, often within a single session; compulsive redosing common
Reset
a few days for acute tolerance
Effects
Positive
- Stimulation
- Increased Energy
Negative
- Pupil Dilation
- Increased Heart Rate
- Jaw Tension
- Restlessness
- Teeth Grinding
- Increased heart rate
- Teeth grinding
- Difficulty Sleeping
Positive
- Enhanced Sociability
- Motivation Enhancement
- Focus Enhancement
- Euphoria
- Alertness enhancement
- Motivation enhancement
Negative
- Anxiety
- Compulsive Redosing
- Talkativeness
- Increased focus
Positive
- Increased libido
- Tactile enhancement
- Increased music appreciation
Negative
- Appetite Suppression
- Light sensitivity
- Appetite suppression
- Disinhibition
- Dehydration
- Vibrating vision
- Increase sexuality