Everything you need to know before your first experience with psilocybin — what it is, how it works, the research, the risks, and how to start safely.
## What Is Psilocybin?
Psilocybin is the active compound in "magic mushrooms" — a naturally occurring psychedelic found in over 200 species of fungi. When ingested, it's converted to psilocin, which binds to serotonin receptors (primarily 5-HT2A) in the brain.
## How It Works
Psilocybin doesn't just change how you feel — it changes how your brain is organized. It temporarily disrupts the default mode network (DMN), the brain's "autopilot" system responsible for habitual thinking patterns. This disruption creates a window of increased neuroplasticity — the brain's ability to form new connections.
This is why psilocybin produces lasting changes from relatively few exposures, while SSRIs require daily dosing for months.
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## The Research
Psilocybin has been studied in clinical trials at Johns Hopkins, NYU, Imperial College London, and UCLA. Key findings:
- 71% response rate for treatment-resistant depression (Johns Hopkins, 2021)
- 83% reduction in heavy drinking days at 8 months (NYU, 2022)
- Significant reduction in end-of-life anxiety (NYU, 2016)
- FDA Breakthrough Therapy designation for depression (2018) and PTSD (2017)
## The Risks
Psilocybin is physiologically non-toxic — there are no known cases of fatal overdose from psilocybin alone. The primary risks are psychological: anxiety, panic, and in rare cases, triggering latent psychosis in people with personal or family history of schizophrenia or bipolar disorder.
**Contraindications:** Personal or family history of psychosis or schizophrenia. Current use of lithium (dangerous interaction). Pregnancy.
## Starting Safely: Microdosing
Microdosing (0.1–0.3g) is the safest entry point. At sub-perceptual doses, there are no psychedelic effects — just the neuroplasticity benefits. The Fadiman Protocol provides a structured 8-week framework.
[Get the starter protocol →](/research-checkout)
*This article is for informational purposes only and does not constitute medical advice.*
Research Hub
Psilocybin & Microdosing Research Hub
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