Phenethylamine
Aliases: Pea, Benzeneethanamine, Beta-phenylethylamine
Summary
Phenethylamine is rapidly metabolized by monoamine oxidase B (MAO-B) in the small intestine and liver, resulting in extremely low oral bioavailability and very short duration of effects. High doses (exceeding typical recommendations) can cause dangerous increases in blood pressure and have been associated with brain bleeds. The compound is naturally present in the human body as an endogenous trace amine and is found in various foods including chocolate.
Perspectives
“No effects.”
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | - | 300-500mg | - | - |
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Oral | 10-30 min | 10-20 min | 15-30 min | 30-90 min | 1.1-2.8 hrs |
Effect Profile
13 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Strong anxiety/jitters with moderate euphoria and focus, mild stimulation
Tolerance
Tolerance Decay
Data are anecdotal; users frequently report rapid loss of effect with repeated dosing in a session and partial return to baseline sensitivity after several days to a week.
Cross-Tolerances
Effects
Aggregated from 13 Erowid experience reports
Positive Effects 6
Adverse Effects 5
PiHKAL / TiHKAL
“No effects.”