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    🧪 This is a research chemical with limited data on its long-term health effects, toxicity profile, and safe dosage ranges.

    Isophenmetrazine Encyclopedic
    Encyclopedic
    Typical encyclopedia coverage. Cross-reference for important decisions.
    • 2 corroborating sources
    • 2 ROAs with full dose ladders
    • duration data present
    • classified Tentative
    • classified Research-chemical

    Stimulant Research-chemical

    Summary TripSit

    Rare and little known analogue of phenmetrazine, which is slightly more potent than other analogues. Probably a stimulating, appetite supressing drug with high addiction potential. Potentially a dopamine and/or norepinephrine releasing agent.

    Dose Information TripSit

    ROA Light Common Strong Heavy
    Insufflated 2-5mg 5-15mg 20-40mg 40mg+
    Oral 5-10mg 10-20mg 20-50mg 50mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects TripSit

    ROA Onset Peak After Effects
    Oral 15-30 min 3-5 hrs 1-6 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)

    Full methodology

    Stimulant 3.8
    Moderate 4/10

    Strong anxiety/jitters with moderate stimulation and euphoria

    Stimulation / Energy ×3
    6
    stimulation wakefulness alertness enhancement
    Euphoria / Mood Lift ×2
    6
    euphoria cognitive euphoria
    Focus / Productivity ×2
    0
    ⚠ Anxiety / Jitters ×1
    10
    anxiety restlessness increased heart rate vasoconstriction
    Based on reports from:
    Erowid Experience Reports PsychonautWiki Isophenmetrazine
    View methodology →

    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

    Positive
    • Stimulation
    • Mental/physical stimulation
    Negative
    • Increased heart rate
    • Insomnia
    • Pupil dilation
    • Nausea
    • Vasoconstriction
    • Restlessness
    Neutral
    • Sedation
    • Decreased appetite
    Positive
    • Alertness enhancement
    • Euphoria
    • Cognitive euphoria
    • Wakefulness
    • Empathy
    Negative
    • Anxiety
    • Confusion
    • Compulsive redosing
    Neutral
    • Talkativeness
    • Time distortion
    Positive
    • Increased music appreciation
    • Color enhancement
    • Tactile enhancement
    • Brightened colour
    Negative
    • Light sensitivity
    • Disinhibition
    • Appetite suppression
    • Dehydration
    Neutral
    • Dulled perception
    • Drifting
    Isophenmetrazine's nerd page Pharmacology, chemical data, effect profiles, and more
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    Helpful Links

    📘 Experience Reports 📖 TripSit 📖 PsychonautWiki