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
- 3 corroborating sources
- 2 ROAs with full dose ladders
- duration data present
- classified Tentative
- classified Research-chemical
Aliases: 4-mmph, 4-metmp, 4-methylmethylphenidate
Summary
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
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 25-40mg | 40-60mg | 60-90mg | 90-125mg+ |
| Insufflated | 10-20mg | 20-45mg | 45-70mg | 70mg+ |
Onset, Duration & After-effects
| ROA | Onset | Peak | Offset | Total |
|---|---|---|---|---|
| Oral | 20-45 min | 1-3 hrs | 2-3 hrs | 3.33-6.75 hrs |
| Insufflated | 5-15 min | 45-90 min | 1-2 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)
Strong anxiety/jitters and euphoria with mild focus, low stimulation
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:
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.
Tolerance
Tolerance Decay
Acute tolerance: develops within a single session — the reset numbers above apply after sustained heavy use, not after one binge. Within-session tachyphylaxis usually resets largely overnight.
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
Effects
- Stimulation
- Increased energy/alertness
- Increased heart rate
- Increased perspiration
- Teeth grinding
- Vasoconstriction
- Weight loss
- Sweating
- Bruxism
- Decreased need for sleep
- Decreased appetite
- Disturbed sleep patterns
- Itchiness
- Focus enhancement
- Motivation enhancement
- Cognitive euphoria
- Euphoria
- Increased sociability
- Mood lift
- Anxiety
- Aggressiveness
- Time distortion
- Excessive talking
- Moodiness
- Increased libido
- Increased music appreciation
- Appetite suppression
- Light sensitivity
- Dehydration
- Double vision
- Disinhibition
- Increased sexuality
- Visual and auditory hallucinations
Helpful Links
Report an issue or suggest an edit
Spotted incorrect or dangerous information, have a correction, a new study, or a useful addition for 4-Me-TMP? Let us know. Reports are reviewed by moderators — this is not posted publicly.