5 min read · updated 2026-08-10
A common oral dose runs about five to six hours end to end on average, with plenty of people either side of that. You feel the first shift 20 to 60 minutes after eating them, it peaks between roughly 90 minutes and 3 hours, then tapers over the next 2 to 4 hours. A tired, slightly wired tail can run into the evening.
The reason it is fairly predictable: psilocybin is a prodrug. Your body converts it to psilocin, which is what actually acts on your brain. In controlled studies plasma psilocin peaked about two hours after dosing on average, with a half-life of roughly one and a half to three hours, and effects lasted five and a half to six and a half hours on average. How you feel tracks the blood level closely, which is why a countdown is reasonable here.
The timeline, phase by phase
| Phase | Time (common dose) | What it feels like |
|---|---|---|
| Waiting | 0–30 min | Nothing yet. Maybe a heavy stomach or a yawn. |
| Come-up | 30–90 min | Nausea, cold hands, anxiety, surfaces starting to move. The hardest stretch for most people. |
| Peak | 90 min–3 hr | Strongest visuals, time distortion, emotion in waves. It does not climb past here. |
| Come-down | 3–5 hr | Effects arrive in waves with gaps. You can hold a conversation again. |
| After | 5–8 hr | Tired, hungry, emotionally raw. Sleep comes late. |
What makes it longer or shorter
- Dose. A light dose is shorter and shallower; a heavy dose stretches the whole curve and the peak lasts longer.
- How you took it. Lemon tek and tea are commonly reported to come on faster, though this has not been measured and the popular explanation, that acid converts psilocybin before you swallow it, has not been shown. A full stomach delays onset.
- Species. A few potent species (Psilocybe azurescens especially) are reported to run longer than cubensis, and azurescens can cause a temporary heaviness in the limbs.
- You. Tolerance from recent use blunts and can shorten it; MAOIs and some other drugs stretch it unpredictably.
“When will this be over?”, mid-trip
If you are in it right now and want the answer for your own clock rather than a table, the calm mode timer counts down from when you dosed and tells you which phase you are in, what is normal for it, and roughly how long is left. It works offline.
Common questions
How long does it take for shrooms to kick in?
20 to 60 minutes on an empty stomach for eaten dried mushrooms. Lemon tek and tea are commonly reported to be faster. A full stomach pushes onset later. Slow onset is not a reason to take more.
How long does the peak last?
At a common dose the peak sits between roughly 90 minutes and 3 hours after eating. It does not keep climbing past that point, though at a heavy dose the peak lasts longer.
How long do effects last the next day?
The main effects are gone by 6 to 8 hours. What can linger into the next day is tiredness, poor sleep the first night, and a mood that is still moving around. That is fatigue, not the drug still being active.
Keep reading
Sources
How we research this: sources, evidence grading, review and updates.