Summary
4-Cl-PPP (4-chloro-ฮฑ-pyrrolidinopropiophenone) is an obscure designer stimulant with minimal human data beyond forum reports. Para-chloro amphetamine analogues have shown serotonergic neurotoxicity in animal studies, raising concerns about potential long-term risks. Users report rapid tolerance formation (within 1-2 days), brief euphoria followed by pronounced compulsion to redose, severe insomnia, and an unpleasant crash. The compound is reportedly very caustic to nasal tissue when insufflated. Similar to ฮฑ-PVP, users report auditory misperceptions and risk of psychotic features with extended use or sleep deprivation.
Dose Information
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Peak | Offset | After Effects |
|---|---|---|---|---|
| Oral | 15-40 min | 1-2 hrs | 1-2 hrs | 2-6 hrs |
| Insufflated | 5-10 min | 1-2 hrs | 1-2 hrs | 2-6 hrs |
Tolerance
Build-up
develops over days to weeks of regular use
Reset
3โ7 days for acute; 1โ3 weeks for full reset
Effects
Positive
- Stimulation
- Physical euphoria
Negative
- Teeth grinding
- Vasoconstriction
- Increased heart rate
- Insomnia
- Increased perspiration
- Increased blood pressure
- Sweating
- Temperature regulation suppression
Positive
- Euphoria
- Increased sociability
- Motivation enhancement
- Focus enhancement
- Wakefulness
- Cognitive euphoria
Negative
- Anxiety
- Paranoia
- Compulsive redosing
- Thought acceleration
Positive
- Increased libido
- Tactile enhancement
- Increased music appreciation
Negative
- Appetite suppression
- Light sensitivity
- Disinhibition
- Dehydration
- Appetite Suppression
- Auditory distortions
- Vibrating vision