Valerylfentanyl
Limited data
Limited data
Sparse data. Doses and effects may be unreliable or untested.
- 2 corroborating sources
- partial dose data
- 19 combo interactions documented
- classified Tentative
- classified Research-chemical
- 2 corroborating sources
- partial dose data
- 19 combo interactions documented
- classified Tentative
- classified Research-chemical
Aliases: Vf
Summary
Opioid that is a higher homologue of Butyrfentanyl with greatly reduced potency.
Dose Information
Dose basis. The single "50 mg and above" figure is a community-reported threshold carried from TripSit, not a clinical measurement, and no upper bound has ever been established — the open end is genuine, not a formatting artifact. Valerylfentanyl is a weak partial mu-agonist relative to fentanyl, but material sold under the name is frequently misrepresented or contaminated with far more potent analogues, which is the actual hazard at this dose scale.
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 50mg+ | - | - | - |
Effect Profile
class estimateScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- No reports exist for this substance. Its effect list is the one shared by 2 other substances of the same class, so the scores below describe the class, not this compound.
- Weighted by importance: core (×3), major (×2), minor (×1)
Moderate euphoria with mild itching/nausea, low sedation
Add to PsychonautWiki Journal
The PsychonautWiki Journal logging app doesn't include every substance. To track Valerylfentanyl there, start adding an ingestion, search for the name, and choose to add it as a custom substance. Paste these values:
Valerylfentanyl Source: SubstanceSearch (substancesearch.com) Oral dose (mg): light 50+ 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
- Motor impairment
- Increased heart rate
- Nausea
- Insomnia
- Vasoconstriction
- Restlessness
- Sedation
- Decreased appetite
- Reduced anxiety
- Euphoria
- Cognitive euphoria
- Wakefulness
- Empathy
- Anxiety
- Confusion
- Compulsive redosing
- Time distortion
- Talkativeness
- Increased music appreciation
- Color enhancement
- Tactile enhancement
- Brightened colour
- Light sensitivity
- Appetite suppression
- Dehydration
- Disinhibition
- Dulled perception
- Drifting
Combinations
Cross-Check Valerylfentanyl with another substanceHelpful Links
Report an issue or suggest an edit
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