MBDB Encyclopedic

Encyclopedic

Typical encyclopedia coverage. Cross-reference for important decisions.

3 corroborating sources

1 ROA with full dose ladder

duration data present

30 combo interactions documented

classified Tentative

classified Research-chemical

Aliases: Eden, Methyl-j

Summary TripSit

A rare entactogenic drug and analogue of MDMA possibly first synthesised by David Nichols. Potentially less potent than related drugs of its type. Sometimes referred to as a 'watered down MDMA.'.

Perspectives

“Generally very, very friendly, very quiet effect. I can read easily, but looking at pictures in most books is relatively meaningless. Distinct de-stressing effect, to the point where it’s too much trouble to set out to do anything at all, really. There is just no drive, and it isn’t even bothersome to be missing it. Do I like it? Yes, very much. Feel that I’ve just begun to explore it, though. Would I consider this material in therapy? Well, sure, it’s worth trying. Destressing would be excellent, and better than MDMA in some ways, but the empathy and intuition levels have yet to be explored in a therapy setting. I feel that they may be somehow lower.”

— Alexander Shulgin, PiHKAL (with 210 mg)

Dose Information dose.wiki TripSit

ROA	Light	Common	Strong	Heavy
Oral	150-180mg	180-210mg	210-250mg	250mg+

Light Common Strong Heavy

Sources

Oral

Dose ladder — dose.wiki, TripSit

Onset, Duration & After-effects TripSit

ROA	Onset	Peak	After Effects	Total
Oral	0.5-2 hrs	3-8 hrs	1-12 hrs	3-8 hrs

Effect Profile

13 reports

Scores (0–10) curated from multiple sources:

Effect keyword matching from PsychonautWiki catalog
Weighted by importance: core (×3), major (×2), minor (×1)

Full methodology

Psychedelic 2.4

Light 2/10

Mild visuals with strong body load, low headspace

Visual Intensity ×3

color enhancement tracers pattern recognition enhancement

Headspace Depth ×3

time distortion

Auditory Effects ×1

⚠ Body Load / Somatic Effects ×1

nausea vasoconstriction teeth grinding increased heart rate sweating

Empathogen 4.6

Moderate+ 5/10

Moderate stimulation, sensory enhancement, and euphoria with low empathy

Empathy / Social Openness ×3

increased sociability

Euphoria / Mood Elevation ×2

euphoria cognitive euphoria

Stimulation ×1

stimulation wakefulness teeth grinding increased heart rate

Sensory Enhancement ×1

tactile enhancement color enhancement increased libido

Stimulant 4.8

Moderate+ 5/10

Moderate stimulation and euphoria with strong anxiety/jitters, mild focus

Stimulation / Energy ×3

stimulation wakefulness alertness enhancement

Euphoria / Mood Lift ×2

euphoria cognitive euphoria

Focus / Productivity ×2

analysis enhancement thought acceleration

⚠ Anxiety / Jitters ×1

anxiety increased heart rate teeth grinding vasoconstriction sweating

Based on reports from:

PiHKAL PiHKAL #128: METHYL-J Erowid Experience Reports

Tolerance

Build-up develops rapidly after a single use

Reset 7–14 days for baseline

Tolerance Decay

Full tolerance 1h Half tolerance 10d Baseline ~14d

Effects Erowid

Aggregated from 13 single-substance Erowid experience reports; 2 Erowid reports where another drug was taken too are left out

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 or something witnessed can count). Mentions saying the effect did not happen are left out; that check reads keywords, so it can miss some. The shaded band on a bar, and the small range after its number, is the 95% interval: where the share could plausibly be with other reports of the same kind. Fewer reports, wider band. 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.

Too few reports for bars: these effects come from 13 single-substance Erowid reports, and a bar is drawn only from 20 reports or more. With fewer, a percentage cannot tell a common effect from a rare one. Counts are shown instead. Why 20?

Positive Effects 9

7 of 13 –

6 of 13 –

5 of 13 –

3 of 13 –

Adverse Effects 6

5 of 13 –

4 of 13 –

3 of 13 –

Combinations TripSit

Cross-Check MBDB with another substance

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 5 positive 2 neutral 1 cautionary visit

A Pleasant MBDB Adventure positive exp #15391

Upon aquiring an unknown, pre-measured dose of MDBD, I tried to find some information on it so that I would know what I was getting myself into...no such luck. No where could I find any information on MDBD, so I had to rely on the source, who told me that it was MDMA'ish, and it was a good dose, and that it was not act...

A Beautiful Day by the Sea positive exp #9790

This was the first time I or my friend knowingly tried MBDB. Both have more or less extensive experience with some closely related substances, however. /--/--/--/--/--/--/--/--/--/--/--/--/--/--/--/- Date: 18.8.2001 My dose: MBDB 180 mg (capsule) (c. 3.15 mg/kg) My friend's dose: MBDB 185 mg (capsule) (c.

Too Zealous cautionary exp #24858

Mindset: I was really excited about trying this rare phenethylamine for the first time and was in a positive frame of mind. Setting: Isolated, woodsy environment in which I am very comfortable and which has been the scene of many memorable entheogenic experiences in the past.

First Encounter with Mbi Dibi neutral exp #10514

Prelude The opportunity finally presented itself for me to pay a visit to the shrine of the little known African deity Mbi Dibi. I've had plenty of experience with the MDMA family of entheogens, but I'd never knowingly taken MBDB.

In the Garden of Eden positive exp #26415

The common sentiment I've been reading has been that MBDB is not a viable subsitute to MDMA, nor is it worth the trouble to procure and imbibe. I have to disagree with these points of view.

Instant Calm positive exp #12970

All right, back for round 2. Last time my 185mg oral dose I reported on left me wondering if the dose could be cut in half with insufflation. Intrepid explorer as always.. I carefully weighed out 100mg (not that I think it was too important with MBDB.. the divide-and-conquer method would be fine with this material).

Insufflated Eden neutral exp #15087

Since nobody has mentioned insufflation as a route of ingestion for MBDB aka Eden aka Methyl-J, and I could find little data regarding this route, I dreamed I experimented so we at least have SOMETHING to go on. 9:30 - App 19.44mg MBDB insuffilated. Smells/tastes like a not quite pure extraction.

Not a Substitute for MDMA positive exp #14386

Because of its claimed similarities to MDMA, I had been curious about MBDB for quite a while. I consider myself to be moderately experienced, particularly considering research chems and MDMA. Many people might have the same questions I had, so I will attempt to run a qualitative comparison between it and MDMA.

PiHKAL / TiHKAL Shulgin

PiHKAL #128: METHYL-J

“Generally very, very friendly, very quiet effect. I can read easily, but looking at pictures in most books is relatively meaningless. Distinct de-stressing effect, to the point where it’s too much trouble to set out to do anything at all, really. There is just no drive, and it isn’t even bothersome to be missing it. Do I like it? Yes, very much. Feel that I’ve just begun to explore it, though. Would I consider this material in therapy? Well, sure, it’s worth trying. Destressing would be excellent, and better than MDMA in some ways, but the empathy and intuition levels have yet to be explored in a therapy setting. I feel that they may be somehow lower.”

— Alexander Shulgin, PiHKAL (with 210 mg)

MBDB's nerd page Pharmacology, chemical data, effect profiles, and more

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Helpful Links

📘 Experience Reports 📖 Erowid 📖 TripSit

Add to PsychonautWiki Journal

The PsychonautWiki Journal logging app doesn't include every substance. To track MBDB there, start adding an ingestion, search for the name, and choose to add it as a custom substance. Paste these values:

⬇ Download import file Import this file as custom substances and you get "MBDB (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.

Name

MBDB

Unit

Description

MBDB
Source: SubstanceSearch (substancesearch.com)

Oral dose (mg): light 150-180 · common 180-210 · strong 210-250 · heavy 250+

Oral duration: onset 0.5-2h · peak 3-8h · total 3-8h · after-effects 1-12h

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 ~ 195 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.

Report an issue or suggest an edit

Spotted incorrect or dangerous information, have a correction, a new study, or a useful addition for MBDB? Let us know. Reports are reviewed by moderators — this is not posted publicly.

MBDB Encyclopedic Encyclopedic Typical encyclopedia coverage. Cross-reference for important decisions. 3 corroborating sources 1 ROA with full dose ladder duration data present 30 combo interactions documented classified Tentative classified Research-chemical