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    Propylhexedrine

    Aliases: Obesin, Benzedrex, Propylhexadrine, Hexahdromethamphetamine

    Stimulant

    Summary TheDrug.Wiki Erowid TripSit PsychonautWiki

    Propylhexedrine (also known as Benzedrex and Obesin) is a stimulant substance of the cycloalkylamine class. It is a structural analog of methamphetamine. Propylhexedrine is widely used medicinally as a nasal decongestant (for relief of congestion due to colds, allergies and allergic rhinitis) and sometimes used recreationally as an over-the-counter "legal high".

    Dose Information TheDrug.Wiki TripSit PsychonautWiki

    ROA Light Common Strong Heavy
    Oral 30-60mg 60-120mg 120-180mg 180mg+
    Insufflated 10-30mg 30-75mg 75-100mg 100mg+
    Insufflated(Pure) 5-15mg 15-30mg 30-50mg 50mg+
    Oral(Benzedrex) 20-60mg 60-125mg 125-250mg 250mg+
    Oral(Pure) 10-20mg 20-50mg 50mg 50mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects TheDrug.Wiki TripSit PsychonautWiki

    ROA Onset Comeup Peak Offset After Effects Total
    Oral 10-30 min 30-60 min 2-5 hrs 1-3 hrs 2-12 hrs 3.7-9.5 hrs
    Insufflated 5-10 min - 4-8 hrs - 1-16 hrs 4.1-8.2 hrs

    Effect Profile

    78 reports

    Scores (1–10) curated from multiple sources:

    • Effect keyword matching from PsychonautWiki catalog
    • Validated against 31 Erowid trip reports
    • Weighted by importance: core (×3), major (×2), minor (×1)

    Full methodology

    Stimulant 8.8
    Intense+ 9/10

    Strong stimulation, euphoria, focus, and anxiety/jitters

    Stimulation / Energy ×3
    10
    stimulation wakefulness
    Euphoria / Mood Lift ×2
    10
    euphoria motivation enhancement
    Focus / Productivity ×2
    10
    focus enhancement motivation enhancement thought acceleration
    ⚠ Anxiety / Jitters ×1
    10
    anxiety increased heart rate teeth grinding vasoconstriction
    Based on reports from:
    Erowid Experience Reports PsychonautWiki Propylhexedrine
    View methodology →

    Tolerance

    Build-up develops with repeated use, similar to amphetamines
    Reset 3–7 days

    Tolerance Decay

    Full tolerance 1d Half tolerance 5d Baseline ~7d

    Cross-Tolerances

    Stimulants
    Amphetamine
    75%
    Methamphetamine
    75%

    Effects Erowid Bluelight

    Aggregated from 31 Erowid and 47 Bluelight experience reports

    Positive Effects 46

    Stimulation 79.5% 87%
    Euphoria 66.7% 87%
    Focus Enhancement 48.8% 84%
    Tingling 42.6% 86%
    Sociability Enhancement 38.3% 85%
    Music Enhancement 25.6% 83%
    Contentment 23.4% 80%
    Thought Acceleration 19.1% 81%
    Body High 14.1% 79%
    Libido Enhancement 8.5% 85%
    Tactile Enhancement 7.7% 90%
    Motor Enhancement 6.4% 80%
    Enhanced Colors 6.4% 78%
    Joy 6.4% 85%
    Confidence 6.4% 88%
    Creativity Enhancement 6.4% 82%
    Empathy 4.3% 88%
    Meta-Awareness Of Irrationality 4.3% 90%
    Empathogenic Connection 4.3% 80%
    Mood Lift 4.3% 88%

    Adverse Effects 55

    Anxiety 30.8% 73%
    Headache 25.6% 83%
    Body Load 25.5% 78%
    Increased Heart Rate 22.6% 70%
    Nausea 20.5% 85%
    Restlessness 17.0% 77%
    Insomnia 17.0% 79%
    Memory Suppression 16.1% 70%
    Irritability 12.8% 80%
    Dysphoria 12.8% 83%
    Thought Disorganization 10.6% 77%
    Confusion 9.7% 70%
    Jaw Clenching 9.0% 82%
    Auditory Effects 9.0% 85%
    Taste Distortion 8.5% 79%
    Paranoia 6.4% 82%
    Stomach Cramps 6.4% 73%
    Vomiting 6.4% 92%
    Tachycardia 6.4% 87%
    Dry Mouth 6.4% 82%

    Combinations TripSit

    Propylhexedrine's nerd page Pharmacology, chemical data, effect profiles, and more
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    Helpful Links

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