Phentermine
Summary
Psychostimulant of the substituted amphetamine class. Used in medicine as an appetite suppressant.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 15-20mg | 20-40mg | 40-70mg | 70mg+ |
Light
Common
Strong
Heavy
Onset, Duration & After-effects
Effect Profile
20 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Validated against 20 Erowid trip reports
- Weighted by importance: core (×3), major (×2), minor (×1)
Stimulant
6.8
Strong+
7/10
Strong stimulation, euphoria, and anxiety/jitters with low focus
Stimulation / Energy
×3
10
stimulation
wakefulness
alertness enhancement
Euphoria / Mood Lift
×2
10
euphoria
cognitive euphoria
Focus / Productivity
×2
2
Anxiety / Jitters
×1
10
anxiety
restlessness
increased heart rate
vasoconstriction
Based on reports from:
Tolerance
Build-up
develops over days to weeks of regular use
Reset
3–7 days for acute tolerance; longer for full reset
Tolerance Decay
Full tolerance
1d
Half tolerance
10d
Baseline
~18d
Effects
Aggregated from 20 Erowid experience reports
Positive Effects 3
Stimulation
60.0%
70%
Euphoria
45.0%
70%
Focus Enhancement
15.0%
70%
Adverse Effects 2
Anxiety
35.0%
70%
Appetite Suppression
20.0%
70%
Pill Identifiers
21
known pill identifiers on record — view imprints, colors, shapes, and images
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