Science & law

Psilocybin is a Schedule 9 prohibited substance in Australia. This is a history of how it moved from ceremonial use to clinical research — and what the law says now.

Australia moved faster than most on psilocybin regulation — but the global picture is complex. Here's how the frameworks actually compare.

Psilocybin remains Schedule 9 in Australia outside specific AP pathways. Here's what clinical research says about contraindications — and why they matter.

DMT and ayahuasca are Schedule 9 prohibited substances in Australia. Here's what the law actually says, and what the science describes.

How psilocybin interacts with serotonin receptors: a plain-English look at psilocin, 5-HT2A binding and why Australian law still applies to all of it.

How psychedelic clinical trials are designed in Australia, from blinding and set and setting to safety monitoring, ethics review and Schedule 9 rules.

Ketamine sits in a legally complex space in Australia — Schedule 8 controlled drug in medicine, with a growing research profile. Here's what the regulation actually says.

LSD sits at Schedule 9 in Australia — a prohibited substance. Here's what the science and law actually say, without the mythology.

MDMA sits at Schedule 8 in Australia under a narrow 2023 TGA ruling. Here's what that actually means legally, and what the research says.

Microdosing is a term with a specific scientific meaning — and in Australia, psilocybin remains Schedule 9 prohibited outside tightly regulated clinical settings.

Placebo controls are the backbone of clinical research — but in psychedelic trials, participants almost always know when they've taken the real thing. Here's why that matters.

Psilocin is the active metabolite behind psilocybin's pharmacological effects. Here's what the chemistry actually shows — and what Australian law says.

Psilocybe mushrooms are Schedule 9 prohibited in Australia. Here's what the botany actually looks like — and why identification carries serious legal and safety risks.

Psilocybin is a Schedule 9 prohibited substance in Australia, with narrow exceptions. Here's what the law, the chemistry, and the research actually say.

Psilocybin is a Schedule 9 prohibited substance in Australia — possession is a criminal offence. Here's what the compound is, how it works, and what the law actually permits.

Psilocybin remains a Schedule 9 prohibited substance in Australia outside a narrow clinical pathway. Here's what the supervised model actually looks like.

Psilocybin remains Schedule 9 prohibited in Australia outside narrow AP pathways. Here's what the research says about psychedelics and drug interactions.

Psilocybin remains Schedule 9 prohibited in Australia outside strict AP pathways. Here's what the science says about its risk profile — and what the law actually allows.

Set and setting explained: where the concept came from, how psychedelic researchers use it, and what Australian law says about psilocybin and MDMA.

Australia's 2023 psilocybin rescheduling created a narrow legal pathway under the TGA. Here's what actually changed — and what didn't.

Psilocybin remains Schedule 9 prohibited in Australia — but the Authorised Prescriber pathway created a narrow legal route in 2023. Here's how it works.

The default mode network quietens during psilocybin exposure — here's what the neuroscience actually shows, and what Australian law says about it.

Decriminalisation and legalisation mean very different things under Australian law. Here's what those terms actually describe — and why the distinction matters.

The global regulatory landscape for psychedelics compared: how Australia's Schedule 9 position sits against the US, Canada, the Netherlands and Portugal.

Psilocybin remains Schedule 9 in Australia outside strict AP pathways. Here's what neuroscience research tells us about how psychedelic tolerance actually works.

The evidence on microdosing psilocybin is mixed, and the legal risk in Australia is real. Here is what the research does and does not actually show.

Psilocybin remains a Schedule 9 prohibited substance in Australia. Here's what the law actually says, why self-medicating is a criminal offence, and how the Authorised Prescriber pathway works.

The 5-HT2A receptor is a G-protein-coupled serotonin receptor subtype found primarily in the prefrontal cortex that is considered the principal molecular target through which classical psychedelics — including psilocin, LSD, and DMT — produce their characteristic perceptual and cognitive effects.

An Authorised Prescriber is a TGA-approved medical practitioner permitted, under specific conditions, to prescribe certain Schedule 8 controlled substances — including psilocybin and MDMA — to eligible patients outside of a clinical trial, following a rescheduling decision that took effect on 1 July 2023.

The default mode network is a set of interconnected brain regions — principally the medial prefrontal cortex, posterior cingulate cortex, and angular gyrus — that shows heightened activity during wakeful rest, self-referential thought, and mind-wandering, and markedly reduced activity under certain pharmacological conditions studied in psychedelic research.

Microdosing refers to the practice of self-administering sub-perceptual quantities of a psychedelic substance — most commonly psilocybin or lysergic acid diethylamide (LSD) — on a repeated schedule, as reported in research literature and user accounts; in Australia, both substances remain Schedule 9 prohibited drugs under the Poisons Standard, meaning possession or use outside a narrow authorised clinical pathway is a criminal offence.

Psilocin is the pharmacologically active metabolite of psilocybin, a serotonergic psychedelic compound classified as a Schedule 9 prohibited substance under Australia's Poisons Standard, with possession or use outside strictly authorised clinical pathways constituting a criminal offence.

Psilocybin is a naturally occurring tryptamine alkaloid found in certain fungi species that acts as a prodrug to psilocin, a potent serotonin 2A receptor agonist; it is a Schedule 9 prohibited substance in Australia under the Poisons Standard, with a narrow Schedule 8 (controlled drug) exception for use via Authorised Prescriber since July 2023.

A clinical research model in which a psychedelic substance — administered in a controlled setting by trained practitioners — is studied alongside structured psychological support, with legal access in Australia tightly restricted under the Therapeutic Goods Administration's scheduling framework.

Schedule 9 (Prohibited Substance) is the most restrictive classification under Australia's Poisons Standard, designating substances whose manufacture, possession, supply, and use are prohibited except in very limited circumstances approved for research or therapeutic development.

A serotonergic psychedelic is a psychoactive compound that produces altered perception, cognition, and mood primarily by acting as a partial agonist at the serotonin 5-HT2A receptor in the central nervous system.