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 | After Effects |
|---|---|---|---|---|---|
| Oral | 18-60 min | 1.0-2.0 hrs | 2.0-3.0 hrs | 1.0-2.0 hrs | 2.0-12.0 hrs |
| Vapourized | 1-1 min | - | 45.0-90.0 hrs | - | 1.0-6.0 hrs |
Tolerance
Effects
- Stimulation
- Mental/physical stimulation
- Nausea
- Pupil dilation
- Increased heart rate
- Restlessness
- Sweating/chills
- Spontaneous bodily sensations
- Brightness alteration
- Decreased appetite
- Novelty enhancement
- Conceptual thinking
- Unity and interconnectedness
- Cognitive euphoria
- Immersion intensification
- Delusion
- Memory suppression
- Depth perception distortions
- Perspective distortion
- Time distortion
- Thought loop
- Personal bias suppression
- Emotion intensification
- Pattern recognition enhancement
- Tracers
- Color enhancement
- Visual acuity enhancement
- Increased music appreciation
- Color shifting
- Auditory acuity enhancement
- Auditory hallucination
- Auditory distortion
- Diffraction
- Symmetrical texture repetition
- Internal hallucination
- Autonomous entity
- Drifting
- After images
- Perspective hallucination
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.”