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

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

    Aliases: 4-mmph, 4-metmp, 4-methylmethylphenidate

    Stimulant Research-chemical

    Summary dose.wiki TripSit

    4-Me-TMP is a research chemical stimulant structurally related to methylphenidate with approximately one-third the potency. It was briefly available after UK bans on other phenidates in 2015 before being classified as a Temporary Class Drug. User reports describe functional, methylphenidate-like stimulation with limited recreational euphoria at low doses, though some euphoria emerges at higher doses.

    Dose Information source varies by route

    ROA Light Common Strong Heavy
    Oral 25-40mg 40-60mg 60-90mg 90-125mg+
    Insufflated 10-20mg 20-45mg 45-70mg 70mg+
    Light Common Strong Heavy
    Sources· 1 of 2 ladders not fully identified

    Oral

    Dose ladder — Light–Strong: dose.wiki, Drugs.Wiki · Heavy: not identified

    Insufflated

    Dose ladder — dose.wiki

    Onset, Duration & After-effects dose.wiki TripSit

    ROA Onset Peak Offset After Effects Total
    Oral 20-45 min 1-3 hrs 2-3 hrs 2-6 hrs 3.33-6.75 hrs
    Insufflated 5-15 min 45-90 min 1-2 hrs 2-4 hrs 1.83-3.75 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 4.6
    Moderate+ 5/10

    Strong anxiety/jitters and euphoria with mild focus, low stimulation

    Stimulation / Energy ×3
    3
    stimulation
    Euphoria / Mood Lift ×2
    9
    cognitive euphoria euphoria mood lift motivation enhancement
    Focus / Productivity ×2
    5
    focus enhancement motivation enhancement
    ⚠ Anxiety / Jitters ×1
    10
    anxiety increased heart rate teeth grinding bruxism vasoconstriction sweating
    Based on reports from:
    The Drug Users Bible 4-Me-TMP
    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 3d Half tolerance 7d Baseline ~14d

    Patterns extrapolated from user reports with methylphenidate-class stimulants: tolerance can build across several days of repeated use and may require 1–2 weeks to substantially reset. Data quality is low and highly individual.

    Cross-Tolerances

    methylphenidate
    ethylphenidate
    other phenidates

    Effects dose.wiki TripSit

    Positive
    Negative
    Neutral
    Positive
    Negative
    Neutral
    Positive
    Negative
    Neutral
    • Visual and auditory hallucinations
    4-Me-TMP's nerd page Pharmacology, chemical data, effect profiles, and more
    →

    Helpful Links

    📘 Experience Reports 📖 dose.wiki 📖 PsychonautWiki 📖 The Drug Users Bible
    Add to PsychonautWiki Journal

    The PsychonautWiki Journal logging app doesn't include every substance. To track 4-Me-TMP there, start adding an ingestion, search for the name, and choose to add it as a custom substance. Paste these values:

    ⬇ Download import file Import this file as custom substances and you get "4-Me-TMP (Substance Search)" with every route's full dose ladder and timeline, no typing. Works on iOS and Android (v15+); the format is confirmed by the app's developer. The manual values below work for older versions.
    Name
    4-Me-TMP
    Unit
    mg
    Description 
    4-Me-TMP
Source: SubstanceSearch (substancesearch.com)

Oral dose (mg): light 25-40 · common 40-60 · strong 60-90 · heavy 90-125+
Insufflated dose (mg): light 10-20 · common 20-45 · strong 45-70 · heavy 70+

Oral duration: onset 20-45m · peak 1-3h · offset 2-3h · total 3.33-6.75h · after-effects 2-6h
Insufflated duration: onset 5-15m · peak 0.75-1.5h · offset 1-2h · total 1.83-3.75h · after-effects 2-4h

Note: ranges are harm-reduction guidance, not a prescription. Start low, go slow, and test your substances.

    Tip: for quicker logging you can also add a Custom Unit in the app, e.g. common dose ~ 50 mg (Oral).

    The app keeps custom substances simple, so the full dose ranges live in the description text above. Ranges are harm-reduction guidance, not a prescription.