Benzphetamine
Aliases: Didrex, Regimex, Inapetyl
Summary
Benzphetamine is prescribed as a short-term appetite suppressant for obesity management. As a prodrug, it metabolizes into amphetamine and methamphetamine in the body, producing stimulant effects. Contraindicated in individuals with cardiovascular disease, moderate to severe hypertension, hyperthyroidism, glaucoma, or history of substance abuse.
Dose Information
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset |
|---|---|---|---|---|
| Oral | 30-60 min | 60-90 min | 2-4 hrs | 4-8 hrs |
Effect Profile
4 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Stimulant
5.9
Strong
6/10
Strong anxiety/jitters and focus with moderate euphoria, mild stimulation
Stimulation / Energy
×3
5
stimulation
wakefulness
Euphoria / Mood Lift
×2
7
physical euphoria
cognitive euphoria
motivation enhancement
Focus / Productivity
×2
9
focus enhancement
analysis enhancement
motivation enhancement
thought acceleration
Anxiety / Jitters
×1
10
anxiety
restlessness
increased heart rate
teeth grinding
vasoconstriction
Based on reports from:
Tolerance
Build-up
develops over days to weeks of regular use
Reset
3–7 days for acute; 1–3 weeks for full reset
Effects
Aggregated from 4 Erowid experience reports
Positive Effects 1
Stimulation
75.0%
70%
Adverse Effects 0
Combinations
Pill Identifiers
8
known pill identifiers on record — view imprints, colors, shapes, and images
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Benzphetamine's nerd page
Pharmacology, chemical data, effect profiles, and more
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