Psychedelic mushrooms are fungi that contain psychedelic substances, such as psilocybin, psilocin, or muscimol.
The most common colloquial terms for psychedelic mushrooms are magic mushrooms, boomers, or just 'shrooms, though there are many more.
Psychedelic mushrooms can be divided into two groups: the psilocybin-bearing mushrooms, found primarily in the Psilocybe genus, and the muscimol-containing mushroom Amanita muscaria.
Psilocybe mushrooms contain psilocybin and/or psilocin, psychedelic tryptamines that are structurally similar to serotonin, a strong regulator of mood, state of mind, and consciousness.
As with many psychoactive substances, the effects of any mushrooms consumed are subjective and unpredictable.
In many countries, psilocybin and psilocin containing mushrooms are illegal.