How psilocybin therapy actually works, session by session
Most of what's written about this describes the trip. The trip is the short part. A licensed course runs three appointments across two to four weeks, and the two that aren't the dosing day are the ones that determine whether it helps.
Preparation, 60–90 minutes
You meet the facilitator, work through medical and psychiatric history, and agree what you're hoping to address. This is also where the exclusions surface: psychosis or bipolar I in you or a first-degree relative, lithium, uncontrolled hypertension, recent cardiac events. A good preparation session spends real time on what happens if the experience turns difficult: a period of acute anxiety during dosing is common enough that every protocol we index plans for it, and it is the reason a facilitator stays in the room. Knowing the plan in advance changes how it lands.
The dosing session, 6–8 hours
You take the dose in a room set up for it, put on an eye mask and a curated playlist, and lie down. A facilitator stays for the entire session. That is the license's core requirement in both Oregon and Colorado, and it's the single biggest difference between a service center and buying mushrooms.
Onset is 20 to 40 minutes, the peak runs roughly two to three hours, and most people are conversational again by hour five. Those are the session windows the licensed programs and the trial protocols in this index schedule around, not a pharmacology finding of ours. The facilitator's job is mostly to be present and unbothered rather than to guide. Talking is optional and usually unhelpful during the peak.
Integration, the part that does the work
One to three sessions in the following weeks, spent turning whatever surfaced into something you actually change. The clinical literature and the retreat industry diverge most sharply right here. The trial protocols that produced the strong depression results all included structured integration; plenty of retreats sell a dosing day and a group breakfast.
If a center treats integration as an upsell, that tells you what they think they're selling. Ask what's included before you pay.
What the evidence supports, and what it doesn't
The strongest results are in treatment-resistant depression and end-of-life distress, from small trials with impressive effect sizes and unresolved questions about blinding, since participants generally know whether they got psilocybin. Addiction results are promising and earlier. Everything else is genuinely preliminary, whatever a retreat website says about trauma, creativity or relationships. You can see the shape of that yourself: depression carries more recruiting studies than every other condition group combined in the trials breakdown, and each study there links to its registration.
Where this page's descriptions come from. Session structure, timings and screening criteria summarize the published protocols of the trials in this index and the program rules of the two licensed states (Oregon ORS 475A, Colorado's Natural Medicine Health Act); prices are what centers themselves publish, and vary. Nothing here is a clinical finding of ours, and none of it is medical advice — a facilitator or study clinician decides what applies to you.
Ready to look at real options? Licensed treatment centers, trials recruiting now, or the legal map if you're still working out what's available where you live.