↳ Index > Factsheets > Parafluorobutyrfentanyl
| Parafluorobutyrfentanyl | Info |
|---|
| Summary | Rare, little known and extremely potent RC analogue of Fentanyl. This powerful opioid is generally only dispensed as a nasal spray. Handle with extreme caution and never mix with other depressants. |
| Dose | Low: 300ug Common: 600-900ug Strong: 900-1200ug. |
| Onset | Insufflated <5 minutes. |
| Duration | 30-60 minutes. |
| Aliases | pfbf 4-fluorobutyrfentanyl 4-fbf |
| Categories | opioid research-chemical habit-forming depressant |
| Effects | Euphoria, Dry Mouth, Mood lift, Itchiness, Relaxant, Constipation, Pupil constriction, Analgesia. |