Stealing Fire vault Substance / selection reference Stable reference Current as of MAR 29, 2026

Vault

Substance Profiles & Selection

Use this file to choose the constraint first: precision, duration, source trust, storage, or the compounds that should stay out of repeated low-dose use entirely.

Substance / selection reference Stable reference Source confidence: mixed Updated MAR 29, 2026

Use the shortest section that changes the decision. Static vault copy is not authority for moving law, policy, vendor, or medical details.

Fast read

Psilocybin mushrooms and LSD are still the main microdosing substances. Everything else is either an analog, a prodrug, or a bad fit for repeated low-dose use.
Format matters as much as substance. Blotter, liquid, capsules, powder, and cactus all carry different precision and trust profiles.
If a compound belongs on the do-not-microdose list, it is there because the repeated low-dose risk profile is wrong, not because the substance is inherently bad.

Next move

Read Testing Manual Review Storage Rules Read Medications Took Too Much Support

Selection sheet Choose the bottleneck first.

Pick the constraint first, not the mythology.

The choice is rarely about which compound is spiritually superior. It is about duration, precision, source trust, storage, and whether the format behaves predictably enough for repeated use.

01 Psilocybin Natural-source practice, shorter duration than LSD, but the batch-variance problem is real and must be calibrated batch by batch.

02 LSD High precision when volumetric dosing is done well, but it is light-sensitive, long-lasting, and impossible to judge by appearance alone.

03 Do not force the fit MDMA, ketamine, NBOMe compounds, and unknown research chemicals do not belong in a repeated microdosing protocol.

Use this page as a selection map: what the compounds are, what the formats buy you, and which options should stay out of a repeated low-dose practice.

Fast Selection Triage

Need precision

LSD or a well-measured lysergamide lane is the cleaner fit when control matters most.

Need natural source

Psilocybin is still the standard answer if you can tolerate variance and recalibrate batch by batch.

Do not force a fit

MDMA, ketamine, NBOMes, 5-MeO-DMT, and unknown research chemicals do not become good microdosing tools by sounding advanced.

The Primary Two

Psilocybin Mushrooms

Psilocybin is the default natural-source option because it has the broadest body of community practice and the shortest path from cultivation or access to a usable batch. The tradeoff is variance. Two dried mushroom batches can differ enough that a dose calibrated on one batch becomes the wrong dose on the next batch. That is not a small nuisance. It is the central operational problem.

Mushrooms often feel warmer, earthier, and more somatic than LSD. They also ask more from your storage and batch calibration discipline. If you want the natural-source path and you can tolerate variance, psilocybin is the standard answer.

LSD

LSD is the precision option. When the liquid or tab source is handled well, it gives you microgram-scale control that mushrooms cannot match. The price of that precision is a longer duration, a more fragile format, and far less visual trust. Blotter tells you almost nothing. Liquid or volumetric prep is the only route that deserves to be called exact.

LSD also has a higher chance of interfering with sleep if the dose runs long or late. People who like the cleaner, more activated cognitive profile often prefer it. People who need a softer body feel often do not.

The Analog Landscape

1P-LSD, 1cP-LSD, ALD-52, And Other Lysergamide Prodrugs

These compounds are usually discussed because they map onto LSD closely enough that people treat them as practical substitutes. That may be true in subjective terms, but the legal and testing picture is unstable. The useful stance is simple: if you choose this lane, treat it like LSD for dosing and storage, and treat the legal environment as live.

4-AcO-DMT

4-AcO-DMT is a synthetic tryptamine prodrug that converts to psilocin. It matters because it removes mushroom variance while keeping a psilocybin-like profile. The main operational requirements are a milligram scale and a willingness to treat it as a chemically precise material rather than a folk-prepared mushroom proxy.

Mescaline

Mescaline appears in this discussion because people keep asking about it. It is a phenethylamine psychedelic found in peyote and San Pedro cactus, and it has a real ethnobotanical history. It is not a clean microdosing substitute for psilocybin or LSD. Cactus material is hard to standardize, nausea is common, and the duration is long enough that it can dominate a day rather than lightly tint it.

Peyote deserves special caution because Indigenous communities have asked for its protection and because the legal and cultural context is not interchangeable with generic cactus use. If you are interested in mescaline, the practical problem is not just legality. It is precision.

DMT And 5-MeO-DMT

These are not microdosing substances in any practical sense. Smoked DMT is too abrupt and too short. Oral DMT requires an MAOI and brings a different interaction stack entirely. 5-MeO-DMT is more destabilizing, far more potent, and has no place in a repeated low-dose protocol.

What Not To Microdose

MDMA

MDMA is not a classical psychedelic, and the repeated low-dose idea runs into a neurotoxicity problem that does not scale into safety just because the dose gets smaller. It belongs outside the microdosing frame.

Ketamine

Ketamine has clinical uses, but repeated self-directed low-dose use carries a different risk profile: dissociation, tolerance, and bladder or cognitive concerns. It is not a clean fit for the practice this vault is describing.

NBOMe Compounds

NBOMe compounds are dangerous LSD substitutes. If a tab tastes bitter, numbing, or obviously wrong, do not keep treating it like LSD.

Unknown Research Chemicals

A compound without a defensible human safety profile does not become safer because it is taken less often. Repeated exposure is exactly where unknown risk becomes a problem.

Selection Matrix

Factor	Psilocybin	LSD	Mescaline / analogs
Duration	Usually shorter and easier to fit into a normal day.	Longer and more likely to run into the evening.	Usually longer and less predictable than people expect.
Precision	Limited by batch variance.	High if volumetric dosing is done correctly.	Poor for cactus, better for isolated compounds, still a different trust problem.
Storage	Whole dried material stores well if kept dry and dark.	Highly light-sensitive and demanding of good handling.	Cactus material is messy; extracted forms behave more like the other isolated compounds.
Best fit	People who want a natural-source path and can calibrate batch variance.	People who want precision and can tolerate a longer, cleaner activation profile.	Experienced users who already understand the format and want a different phenethylamine profile.

Decision Framework

If you need precision, LSD or a well-measured prodrug lane is the cleaner fit.
If you want a natural-source path and can tolerate variance, psilocybin is the standard answer.
If you need low confidence in a new batch, the problem is testing and calibration before it is substance choice.
If the only reason to choose a compound is that it sounds advanced, that is not a decision.

The right substance is the one whose tradeoffs match your actual life, not the one that sounds most optimized in the abstract.

I need to verify what I haveIdentity and contamination come before substance preference.I need storage rules for the batchThe format choice only matters if the batch stays stable.The real issue is medication interactionMedication risk outranks substance preference when the decision is safety-critical.I need the fast version firstUse the quick reference when you need the short answer before the full file.

What To Read Next

If the choice is still unclear, the next stop is the testing manual for identity and failure handling, or the medications page if the choice is constrained by a prescription.