<P> As with other psychedelics such as LSD, the experience, or "trip", is strongly dependent upon set and setting . A negative environment could contribute to a bad trip, whereas a comfortable and familiar environment would set the stage for a pleasant experience . Psychedelics make experiences more intense, so if a person enters a trip in an anxious state of mind, they will likely experience heightened anxiety on their trip . Many users find it preferable to ingest the mushrooms with friends, people with whom they are familiar, or people who are familiar with' tripping' . The psychological consequences of psilocybin use include hallucinations and an inability to discern fantasy from reality . Panic reactions and psychosis also may occur, particularly if a user ingests a large dose . In addition to the risks associated with ingestion of psilocybin, individuals who seek to use psilocybin mushrooms also risk poisoning if one of the many varieties of poisonous mushrooms is incorrectly identified as a psilocybin mushroom . </P> <P> Dosage of mushrooms containing psilocybin depends on the potency of the mushroom (the total psilocybin and psilocin content of the mushrooms), which varies significantly both between species and within the same species, but is typically around 0.5--2.0% of the dried weight of the mushroom . A typical low dose of the common species Psilocybe cubensis is about 1.0 to 2.5 g, while about 2.5 to 5.0 g dried mushroom material is considered a strong dose . Above 5 g is often considered a heavy dose with 5.0 grams of dried mushroom often being referred to as a "heroic dose". </P> <P> The concentration of active psilocybin mushroom compounds varies not only from species to species, but also from mushroom to mushroom inside a given species, subspecies or variety . The same holds true even for different parts of the same mushroom . In the species Psilocybe samuiensis, the dried cap of the mushroom contains the most psilocybin at about 0.23%--0.90% . The mycelium contains about 0.24%--0.32% . </P> <P> Psilocybin mushrooms are regulated or prohibited in many countries, often carrying severe legal penalties (for example, the US Psychotropic Substances Act, the UK Misuse of Drugs Act 1971 and Drugs Act 2005, and in Canada the Controlled Drugs and Substances Act). </P>

What part of a mushroom makes you trip
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