4-Fluoropentedrone
Aliases: 4-fpd, 4-f-pentedrone, 4-fluoro-alpha-methylamino-valerophenone, 4f-pentedrone
Categories
Summary
4-Fluoropentedrone (4-FPD) is a synthetic cathinone sold on the gray market since approximately 2018. Human pharmacology remains largely uncharacterised; harm-reduction advice is extrapolated from pentedrone and 4-FMC data plus limited community reports. Acute risks include tachycardia, hypertension, vasoconstriction, hyperthermia, diaphoresis, agitation, bruxism, mydriasis, anxiety, and panic. Severe complications include rhabdomyolysis and serotonin-toxicity-like syndromes when combined with serotonergic agents. Purity varies widely in street samples; use reagent testing (Marquis: pale yellow to brown) and accurate milligram scales.
Dose Information
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | After Effects |
|---|---|---|---|---|---|
| Oral | 10-30 min | 15-30 min | 1-2 hrs | 1-2 hrs | 2-6 hrs |
| Insufflated | 2-5 min | 5-10 min | 1-2 hrs | 1-2 hrs | 2-6 hrs |
| Rectal | 5-10 min | 10-20 min | 1-2 hrs | 1-2 hrs | 2-6 hrs |
Tolerance
Build-up
develops rapidly, often within a single session; compulsive redosing common
Reset
a few days for acute tolerance
Effects
Positive
- Stimulation
- Physical euphoria
Negative
- Increased heart rate
- Increased blood pressure
- Vasoconstriction
- Increased perspiration
- Bruxism
- Temperature regulation suppression
- Temporary erectile dysfunction
- Urinary retention
- Insomnia
Positive
- Cognitive euphoria
- Motivation enhancement
- Focus enhancement
- Increased sociability
Negative
- Anxiety
- Compulsive redosing
- Paranoia
- Cognitive fatigue
- Depression
- Anhedonia
- Thought acceleration
Positive
- Increased music appreciation
- Tactile enhancement
- Color enhancement
- Brightened colour
Negative
- Disinhibition
- Appetite suppression
- Dehydration
- Light sensitivity
- Dulled perception
- Drifting