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yewenjie | 7 months ago

The study mentions they administered 30 milligrams of psilocybin for 70 kg of body weight. Does anybody know how many grams of dried mushrooms that is equivalent to, roughly?

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awithrow|7 months ago

A good ballpark for dried shrooms is roughly 1% psilocybin by weight of dried shroom, so about 3g. That said, it's going to vary a lot shroom to shroom, genetic to genetics, and species to species. Could be as high as 6g for more mild strains and as low a 1g for something like pan cyans.

Joel_Mckay|7 months ago

That is the problem with clandestine pharmacy by Florida man, as people may get the wrong dose or a mixture of various other poisons like arsenic (see dark web article.)

When ready, please talk with your doctor first. =3

adamgordonbell|7 months ago

2 to 5 grams dried psilocybe cubensis, per chatgpt.

TrackerFF|7 months ago

You’ll be tripping balls on that amount. 5g is close to a heroic dose.

EDIT: Never mind, didn't see that it was cubensis - which might take more due to being weaker than regular wild semilanceata.

locallost|7 months ago

I don't know if that's true or false, but I would certainly not trust chatgpt blindly in this case.

scellus|7 months ago

Here's a rough breakdown from Claude:

"[...] psilocybin converts to psilocin in the body at roughly a 1:1 ratio by active effect [...]

Psilocybe cubensis (most common): Contains about 0.5-1.0% psilocybin by dry weight. Since psilocybin converts to psilocin in the body at roughly a 1:1 ratio by active effect, 30mg of psilocin would be equivalent to roughly 3-6 grams of dried P. cubensis.

Psilocybe semilanceata (liberty caps): Much more potent at 1-2% psilocybin content, so you'd need only about 1.5-3 grams dried.

Psilocybe azurescens: Even more potent at 1.5-2.5% psilocybin, requiring roughly 1-2 grams dried.

Important caveats:

- Individual mushrooms within the same species can vary by 3-5x in potency Growing conditions, harvesting time, and drying/storage methods all affect potency

- The caps are typically more potent than stems

- Fresh vs. dried makes a huge difference (fresh mushrooms are ~90% water)"

Have to note that the paper is from 2016; for those really interested, it's good to read recent review papers.

mock-possum|7 months ago

And I’d consider about an eighth to be a dose, so that sounds like it’s in the right neighborhood.