Library
4-Fluairfeinibút
4-Fluorophenibut is a fluorinated analog of phenibut, reported to be 5-10 times more potent with faster onset and shorter duration. It acts primarily as a GABA-B receptor agonist with possible voltage-gated calcium channel activity. Users report more pronounced physical effects and euphoria compared to phenibut, with a correspondingly higher risk of dependence and compulsive redosing. Tolerance develops rapidly with daily use. Withdrawal can be dangerous and may include severe anxiety, insomnia, and potentially seizures due to possible GABA-A activity.
Also known as: Baflofen, Fluorobut, Cgp-11130, Fluorophenibut
Classification
- Chemical: Gabapentinoid
- Psychoactive: Depressant
- Tag: Anxiolytic
- Tag: GABA analogue
- Tag: GABAergic
- Tag: Habit-Forming
- Tag: Research-Chemical
- Tag: Tentative
Effects
- Sedation
- Physical Euphoria
- Muscle Relaxation
- Nausea
- Motor Impairment
- Respiratory Depression
- Anxiety Suppression
- Cognitive Euphoria
- Empathy Enhancement
- Sociability Enhancement
- Motor Control Loss
- Compulsive Redosing
- Disinhibition
- Increased Music Appreciation
- Dulled Perception
- Dehydration
- Increased Libido
- Open Eye Visuals
Routes of Administration
Oral
Dosage
- Threshold: 50 mg
- Light: 100-200 mg
- Common: 200-400 mg
- Strong: 400 mg
- Heavy: 600 mg
Duration
- Onset: 0.33-1.5 h
- Comeup: 0.5-1 h
- Peak: 2-5 h
- Offset: 2-4 h
- After Effects: 24 h
Harm Reduction
Check interactions before mixing substances, pay attention to dose spacing and hydration, and treat all dosage guidance as approximate rather than guaranteed safe.
Sources
Substance data is aggregated from the following public harm-reduction and reference sources.
Links
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