Psilocybin shroom can be eaten fresh or dried, brewed into tea, or mixed with food. The effects usually start within 30 minutes after ingestion and last for 4 to 6 hours. The dosage depends on the potency of the mushroom, which varies by species, origin, growing conditions, harvest period, and preparation method. A typical dose ranges from 0.2 to 0.5 grams of dried mushrooms.