4-HO-MPT
Aliases: 4hompt
Summary
4-Hydroxy-N-methyl-N-propyltryptamine (also known as 4-HO-MPT or Meprocin) is a novel synthetic psychedelic substance of the tryptamine chemical class that produces psychedelic effects when administered. It is a closely related structural analog of 4-HO-DMT (Psilocin) and other hallucinogenic tryptamines with powerful psychedelic effects.
Perspectives
“There was a very mild visual distortion, and a prominent vertigo without nausea. In the second hour there is still some enhancement of visual detail, but I am not endowed with the flight of ideas of philosophical concepts as with psilocin. I am rapidly subsiding and I am able to eat normally. Residual insomnia lasted eight hours.”
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 10-20mg | 20-30mg | 30-50mg | 50mg+ |
| Vapourized | 3-5mg | 5-10mg | 10-15mg | 15mg+ |
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset |
|---|---|---|---|---|
| Oral | 18-60 min | 1-2 hrs | 2-3 hrs | 1-2 hrs |
| Vapourized | 1-1 min | - | 45-90 hrs | - |
Effect Profile
6 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Strong visuals and auditory effects with mild headspace and body load
Tolerance
Tolerance Decay
Effects
Aggregated from 6 Erowid experience reports
Positive Effects 6
Adverse Effects 2
Combinations
PiHKAL / TiHKAL
“There was a very mild visual distortion, and a prominent vertigo without nausea. In the second hour there is still some enhancement of visual detail, but I am not endowed with the flight of ideas of philosophical concepts as with psilocin. I am rapidly subsiding and I am able to eat normally. Residual insomnia lasted eight hours.”