It seems to be in the typical range for a medium to strong dose. A simple glance at the wikipedia page suggests that Psilocybe cubensis is ~1% pysoactive ingred

It seems to be in the typical range for a medium to strong dose. A simple glance at the wikipedia page suggests that Psilocybe cubensis is ~1% pysoactive ingrediants (psilocin and psilocybin) so, working backwords, 25mg psilocybin would be about 2.5g worth of mushrooms. I haven't taken into account how psilocin & psilocybin are different or if there is typically degredation of the psychoactive compounds typically prior to ingestion (during transportation, handeling, etc.)