Summary
4-HO-MPT is a research chemical with very little history of human usage and minimal scientific data on its pharmacology, metabolism, and toxicity. Legal status varies by jurisdiction; it is unscheduled in most countries but is a Class A drug in the United Kingdom under the tryptamine catch-all clause and controlled under Germany's NpSG. Use precise scales for dosing as potency varies between salt forms (freebase is approximately 25% more potent than fumarate salts). Individuals with personal or family histories of mental illness should avoid use.
Dose Information
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | After Effects |
|---|---|---|---|---|---|
| Oral | 19-40 min | 30-60 min | 2.0-3.0 hrs | 1.0-2.0 hrs | 1.0-3.0 hrs |
| Insufflated | 4-15 min | 15-30 min | 45-90 min | 30-60 min | 1.0-2.0 hrs |
| Vaporized | 1-3 min | - | 10-30 min | 15-45 min | 1.0-6.0 hrs |
Tolerance
Build-up
develops rapidly after a single use
Reset
7–14 days for baseline
Cross-tolerance
Effects
Positive
- Physical euphoria
- Stimulation
- Mental/physical stimulation
Negative
- Bodily pressures
- Nausea
- Increased Heart Rate
- Pupil Dilation
- Sedation
- Spontaneous bodily sensations
- Decreased appetite
Positive
- Thought connectivity
- Analysis enhancement
- Emotion enhancement
- Novelty enhancement
- Immersion intensification
Negative
- Anxiety
- Thought Loops
- Memory Suppression
- Time distortion
- Depth Perception Distortions
Positive
- Bodily control enhancement
- Color enhancement
- Pattern recognition enhancement
- Music enhancement
- Color Shifting
Negative
- Symmetrical Texture Repetition
- Drifting
- Diffraction
- After Images
- Internal Hallucination
- External Hallucination
- Auditory Distortion