Dosage of mushrooms containing psilocybin depends on the potency of the mushroom, which varies significantly both between species and within the same species, but is typically around 0.5-2% of the dried weight of the mushroom. A typical dose of the rather common species, Psilocybe cubensis, is approximately 1.5 to 3.5 grams,while about 3.5 to 5 gramsdried mushroom material is considered a stronger dose. 5-7 dried grams is often considered a heavy dose.
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