Fenethylline
Encyclopedic
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 2 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 18 combo interactions documented
- PubChem toxicity data
- classified Research-chemical
- 2 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 18 combo interactions documented
- PubChem toxicity data
- classified Research-chemical
Aliases: Fitton, Captagon, Biocapton, Amfetyline, Phenethylline
Summary
Fenethylline, once marketed as Captagon, is a prodrug that metabolizes into amphetamine and theophylline. Authentic material carries classic stimulant risks and high addiction potential, while most modern 'Captagon' tablets are counterfeit mixtures. Illicit 'captagon' tablets in MENA regions typically contain amphetamine, caffeine, and fillers rather than genuine fenethylline; dosage guidance here assumes laboratory-verified fenethylline.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 20-40mg | 40-100mg | 100-200mg | 200mg+ |
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset |
|---|---|---|---|---|
| Oral | 20-60 min | 30-60 min | 1-4 hrs | 4-8 hrs |
| Insufflated | 5-15 min | 15-30 min | 1-3 hrs | 3-6 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 focus with moderate stimulation and anxiety/jitters, mild euphoria
Tolerance
Tolerance Decay
Anecdotal stimulant-like tolerance: builds quickly with daily/heavy use and partially recovers over 3–14 days; cross-tolerance with other amphetamine-type stimulants is expected by mechanism. Evidence quality low.
Cross-Tolerances
Effects
- Stimulation
- Bronchodilation
- Stamina enhancement
- Increased heart rate
- Abnormal heartbeat
- Increased blood pressure
- Dry mouth
- Muscle cramps
- Insomnia
- Increased bodily temperature
- Euphoria
- Wakefulness
- Mental clarity
- Increased sociability
- Focus enhancement
- Motivation enhancement
- Analysis enhancement
- Anxiety
- Irritability
- Increased focus
- Increased Music Appreciation
- Increased Libido
- Increased libido
- Tactile enhancement
- Increased music appreciation
- Appetite suppression
- Light sensitivity
- Appetite Suppression
- Dehydration
- Disinhibition
Combinations
Cross-Check Fenethylline with another substanceHelpful Links
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