This is a report of two different occasions using MPA, or Methiopropamine; the first can be seen as background and context for using the drug together with the first account of my initial experience snorting the drug.
Methiopropamine
Well-documented
Well-documented
Multiple authoritative sources agree on dosing and effects.
- 6 corroborating sources
- 2 ROAs with full dose ladders
- duration data present
- toxicity data (PsychonautWiki)
- classified Research-chemical
Well-documented
Multiple authoritative sources agree on dosing and effects.
- 6 corroborating sources
- 2 ROAs with full dose ladders
- duration data present
- toxicity data (PsychonautWiki)
- classified Research-chemical
Aliases: Mpa, Blow
Summary
Methiopropamine (also known as MPA) is a stimulant substance of the thiophene class. It is a ring-based structural analogue of methamphetamine. Methiopropamine was first synthesized in 1942.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 20-30mg | 30-50mg | 50-60mg | 60mg+ |
| Insufflated | 5-20mg | 20-40mg | 40-60mg | 60mg+ |
Light
Common
Strong
Heavy
Sources
Oral
Dose ladder — dose.wiki, PsychonautWikiInsufflated
Dose ladder — PsychonautWikiOnset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Oral | 30-60 min | 30-60 min | 2-4 hrs | 2-3 hrs | 6-10 hrs |
| Insufflated | 5-10 min | 10-20 min | 30-60 min | 0.5-2 hrs | 2-4 hrs |
Effect Profile
28 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Validated against 28 Erowid trip reports
- Weighted by importance: core (×3), major (×2), minor (×1)
Stimulant
8.8
Intense+
9/10
Strong stimulation, euphoria, focus, and anxiety/jitters
Stimulation / Energy
×3
10
stimulation
wakefulness
Euphoria / Mood Lift
×2
10
physical euphoria
cognitive euphoria
motivation enhancement
Focus / Productivity
×2
10
focus enhancement
analysis enhancement
motivation enhancement
thought acceleration
Anxiety / Jitters
×1
10
anxiety
teeth grinding
increased heart rate
Based on reports from:
Tolerance
Build-up
develops over days to weeks of regular use
Reset
3โ7 days for acute tolerance; longer for full reset
Tolerance Decay
Full tolerance
1d
Half tolerance
10d
Baseline
~18d
Acute tolerance: develops within a single session โ the reset numbers above apply after sustained heavy use, not after one binge. Within-session tachyphylaxis usually resets largely overnight.
Effects
Aggregated from 28 Erowid experience reports
Each bar shows the share of analyzed reports whose text mentions that effect — a mention is not always a first-hand experience (fear of an effect, something witnessed, or "did not happen" count too). Tap or hover any number for details. The second value is the Bluelight extractor's per-effect confidence; a dash means the row is Erowid-derived, which has no confidence measurement.
Effect glossary — · full glossary
Positive Effects 9
71.4%
–
64.3%
–
53.6%
–
42.9%
–
35.7%
–
25.0%
–
21.4%
–
14.3%
–
10.7%
–
Adverse Effects 9
28.6%
–
25.0%
–
25.0%
–
25.0%
–
21.4%
–
17.9%
–
17.9%
–
14.3%
–
10.7%
–
Community Trip Reports
Anecdotal first-person accounts from Reddit, Erowid, Bluelight, and Dose.wiki. Click a source to expand. Reports are harm-reduction context, not medical guidance. Tags summarise each author's own verdict — how reports are classified.
Erowid 8 reports 3 positive 4 neutral 1 cautionary visit
Substance Background: For clarification my substance 'use' over the past two years has been inexistent. However, the substances I will list here are things I used years ago.
The backstory: After meeting with some friends that had taken methiopropamine in the form of a legal high mixed with benzocaine (Ethyl 4-aminobenzoate), presumably to combat the quite painful snorting, in an unspecified ratio, my friend and I decided weยd try it after a bit of research.
Some user details have been slightly modified for privacy, but all of the following information is completely true and carefully recorded. Background on me: mildly bipolar, longtime chronic mild anxiety sufferer, access to benzos both ยrcย and prescribed.
I've been researching chems to ingest for the purpose of study over the last year. I've tried a few of the racetams, (pir, ani and oxi) finding that oxi gave me near photographic memory while piracetam seems completely inactive.
I have experienced narcoleptic symptoms for roughly a dozen years; and no treatment, mainstream or otherwise, has exhibited fewer side-effects than methiopropamine (i.e. MPA).
(decided to start documenting at 3:45PM, times up until then are estimates.) Today I awoke at about 1:30 from a night of watching the first 4 episodes of Breaking Bad. Through the night I remember having very weird dreams that seemed extremely inspired by Breaking Bad.
I am a 28 year old artist with a fairly logical and normal state of mind. I wouldn't consider myself to be paranoid and/or over the top. I am currently on no medication but have suffered from depression in the past.
Bluelight 7 threads 7 neutral visit
I have taken MPA in the past with mixed results. It has always been either very good (productive, worthwhile, no problems) or had started out OK but quickly began making me feel very sick. Anyway, I'm tired of Monster and coffee which aren't doing much because I haven't slept since I got up on Friday at 4:00 PM.
Background : I've been prescribed Adderall (30mg/twice daily) for about a year now, the first 6 months of having it I abused it a lot, snorting it and taking way too many at one time.
As many of you will be aware, Methiopropamine was temp banned in the UK on the 27th of November. This was the day that the 1 gram I had ordered arrived in my mail. It is now two weeks later.
Substance : Methiopropamine HCL Appareance : Fine white powder - clumpy and sticky First time experience on a "pure stimulant" (not empathogen) I don't have any stimulant tolerance and I have never tried a pure functional stimulant. Only experienced MDMA as "stimulant" and Methylone.
After looking all around, I found one post on this being possible. But there was limited information on dose, effect, duration and general effects. I'm sure there as many who would like a small trip report for this ROA, with an otherwise disappointing RC.
I bought 500mgs of this stuff off've a reputable vendor. I consumed about 200-250mg's of it over the night and gave out the rest. Not sure exact doses though. It was a clumpy white powder and every dose was snorted.
Hi I am new to Blulight , I used to post on champlegals before it was closed but I stopped once cathinones were controlled as there was nothing new to report. I am healthy and was in a good frame of mind at the time of taking this substance. I recieved a sample or Methiopropamine from a reputable supplier.
Methiopropamine's nerd page
Pharmacology, chemical data, effect profiles, and more
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Helpful Links
Add missing routes to PsychonautWiki Journal
The PsychonautWiki Journal app already has Methiopropamine, but its built-in entry only covers Insufflated, Oral. Here are the other routes we have data for. You can't edit a built-in substance, but you can add a Custom Unit for any of these routes to log it.
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Import this file as custom substances
and you get "Methiopropamine (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.
Dose & duration (reference)
Methiopropamine: routes the PsychonautWiki Journal app is missing Source: SubstanceSearch (substancesearch.com) Insufflated duration: onset 5-10m ยท come-up 10-20m ยท peak 0.5-1h ยท offset 0.5-2h ยท total 2-4h ยท after-effects 6-8h Note: ranges are harm-reduction guidance, not a prescription. Start low, go slow, and test your substances.
Custom Units carry a single dose per route, so the full ranges live in the reference above. A route's suggested dose is the midpoint of its common range. Ranges are harm-reduction guidance, not a prescription.
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