4F-MABP
Limited data
Limited data
Sparse data. Doses and effects may be unreliable or untested.
- 1 source
- duration data present
- 18 combo interactions documented
- classified Research-chemical
- dose data not in PW/TripSit (unverifiable)
- 1 source
- duration data present
- 18 combo interactions documented
- classified Research-chemical
- dose data not in PW/TripSit (unverifiable)
Aliases: 4-fbp, Para-fluorobuphedrone
Summary
4F-MABP is a little-studied fluorinated analogue of buphedrone first identified on the European NPS market in 2014. Animal data and seizure analyses show it acts as a dopamine and norepinephrine reuptake inhibitor comparable in potency to flephedrone. Human reports are scarce; effects resemble other short-acting cathinones with rapid onset euphoria, strong urge to redose, and an uncomfortable crash.
Dose Information
| ROA | Threshold |
|---|---|
| Oral | 20mg |
| Insufflated | 10mg |
Only a threshold dose is documented for this substance — the smallest amount with a noticeable effect. There is no published light/common/strong ladder to show above it.
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Oral | 15-30 min | 30-45 min | 1-2 hrs | 1-2 hrs | 2.75-5.25 hrs |
| Insufflated | 2-5 min | 10-20 min | 30-90 min | 30-60 min | 1.2-2.91 hrs |
Effect Profile
Scores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Strong anxiety/jitters with moderate euphoria, mild focus, low stimulation
Add to PsychonautWiki Journal
The PsychonautWiki Journal logging app doesn't include every substance. To track 4F-MABP there, start adding an ingestion, search for the name, and choose to add it as a custom substance. Paste these values:
4F-MABP Source: SubstanceSearch (substancesearch.com) Oral dose (mg): threshold 20 Insufflated dose (mg): threshold 10 Oral duration: onset 15-30m · come-up 30-45m · peak 1-2h · offset 1-2h · total 2.75-5.25h · after-effects 2-6h Insufflated duration: onset 2-5m · come-up 10-20m · peak 0.5-1.5h · offset 0.5-1h · total 1.2-2.91h · after-effects 2-6h Note: ranges are harm-reduction guidance, not a prescription. Start low, go slow, and test your substances.
The app keeps custom substances simple, so the full dose ranges live in the description text above. Ranges are harm-reduction guidance, not a prescription.
Tolerance
Tolerance Decay
Acute tolerance: develops within a single session — the reset numbers above apply after sustained heavy use, not after one binge. Within-session tachyphylaxis usually resets largely overnight.
Effects
- Stimulation
- Vasoconstriction
- Temperature regulation suppression
- Teeth grinding
- Jaw clenching
- Increased heart rate
- Increased blood pressure
- Insomnia
- Nausea
- Sedation
- Euphoria
- Focus enhancement
- Motivation enhancement
- Increased sociability
- Empathy enhancement
- Cognitive euphoria
- Anxiety
- Compulsive redosing
- Talkativeness
- Time distortion
- Music appreciation enhancement
- Increased libido
- Increased music appreciation
- Color enhancement
- Tactile enhancement
- Appetite suppression
- Dehydration
- Light sensitivity
- Disinhibition
- Dulled perception
Combinations
Cross-Check 4F-MABP with another substanceHelpful Links
Report an issue or suggest an edit
Spotted incorrect or dangerous information, have a correction, a new study, or a useful addition for 4F-MABP? Let us know. Reports are reviewed by moderators — this is not posted publicly.