Psychedelics Guide › Psilocybin and magic mushrooms: an informative guide
Psilocybin is the primary psychedelic compound found in “magic mushrooms,” a group of fungi—primarily of the genus Psilocybe—that various cultures have used in ritual and knowledge-seeking contexts for centuries. In the body, it converts into psilocin, which acts on the brain’s serotonergic system, transforming perception, cognition, and mood. This guide gathers our published work on the subject—from its history and species to the latest research—with an educational focus and a commitment to harm reduction.
Interest in psilocybin has grown in recent years following studies exploring its applications in mental health, particularly for treatment-resistant depression and anxiety. These investigations remain preliminary, conducted in clinical settings with psychotherapeutic support, so it is important to interpret the results with rigor: they describe an open and promising field, not a finalized treatment or a guaranteed cure. Anyone choosing to approach these substances deserves this same honest information, without exaggeration in either direction.
Throughout these pages, we distinguish between the different species—Psilocybe, which contain psilocybin, and Amanita muscaria, whose effects are due to other alkaloids—, revisit the figure of Albert Hofmann and the Western rediscovery of Mesoamerican teonanácatl, and review the science and what is known about their effects. We start from a simple premise: information belongs to those who wish to use it, and each person is best equipped to decide on their own experience. Our role is to offer verified knowledge and self-care tools, not sermons.
Featured Readings
- Hofmann and psilocybin: from teonanácatl to the test tube
- Amanita muscaria: history and reality of the first entheogen
- Cultivating Psilocybe cubensis: biology, culture, and risks
- Psilocybin and depression: neuroimaging, regulation, and the search for a new therapy
- The FDA finalizes its psychedelic guidance and accelerates psilocybin
Recent Studies and Evidence
What the most recent clinical research (Nature, JAMA, NEJM, Lancet, PubMed) shows, told with rigor and without exaggeration.
- Psilocybin and major depression: what recent clinical trials say
- Psilocybin and resistant depression: what the EPISODE trial says
- Psilocybin and alcoholism: what the JAMA randomized trial shows
- Psilocybin and cancer: a single dose with two-year benefits
- Psilocybin and anorexia nervosa: the first feasibility study
- Psilocybin in bipolar II depression: what the JAMA Psychiatry trial showed
History and Discovery: From Sacred Mushrooms to Albert Hofmann
From the Mesoamerican teonanácatl to the Swiss laboratory, where Albert Hofmann isolated and synthesized psilocybin in the late 1950s. We review how the West rediscovered mushrooms with centuries of ritual use.
- Hofmann and psilocybin: from teonanácatl to the test tube
- Hofmann and the three magic drugs: psilocybin and ololiuqui
- Hofmann and the entheogens of Mexico: from LSD to psilocybin
- Hofmann at 100: his farewell and the chemistry of psilocybin
The Species: Psilocybe, Amanita muscaria, and Psychoactive Iberia
Not all “magic mushrooms” are the same: Psilocybe contain psilocybin, while Amanita muscaria owes its effects to muscimol. Misidentification of species is one of the greatest risks.
- Amanita muscaria: history and reality of the first entheogen
- Cultivating Psilocybe cubensis: biology, culture, and risks
- Amanita, psilocybes, and San Pedro: psychoactive Iberia
Science and Therapy: Effects, Pharmacology, and Mental Health
What research says about psilocybin for depression, anxiety, and emotional regulation, always in clinical and experimental contexts with supervision. The results are promising but still preliminary.
- Psilocybin: emotional and cognitive modulation under the scientific lens
- Psilocybin and depression: breaking the rumination loop
- Psilocybin and depression: neuroimaging, regulation, and the search for a new therapy
Legality, Regulation, and Current Events
From the prohibition of psilocybin mushrooms in the Netherlands to the latest regulatory moves by the FDA in the United States. Psilocybin is a controlled substance in most countries.
- The prohibition of psilocybin mushrooms in the Netherlands (2008)
- The FDA finalizes its psychedelic guidance and accelerates psilocybin
Frequently Asked Questions
What is psilocybin?
Psilocybin is a psychedelic compound naturally present in several species of fungi, primarily of the genus Psilocybe. Once ingested, the body converts it into psilocin, which acts on the brain’s serotonin receptors and modifies perception, thought, and mood. It is one of the best-studied classic psychedelics, alongside LSD and mescaline.
What effects do magic mushrooms produce and how long do they last?
When taken orally, effects usually begin between 20 and 60 minutes after ingestion and can last for several hours. They include changes in visual perception, an alteration in the sense of time and the boundaries of the “self,” and variations in mood that many people describe as significant. Their intensity depends primarily on the dose, the individual, and the context (the classic “set and setting”): the same mushroom can lead to very different experiences, including phases of anxiety or discomfort, which tend to pass with time and a calm environment.
Is psilocybin used to treat depression?
Several preliminary clinical trials suggest that psilocybin, combined with psychotherapeutic support and in a controlled environment, could help in some cases of treatment-resistant depression, and it has received attention from regulatory agencies as a priority research area. These are hopeful results, but they are still under study: they describe a path being explored, not a standardized treatment or a guarantee of results. The honest approach is to follow the evidence as it advances, without selling it as a miracle or dismissing it prematurely.
Is Amanita muscaria the same as psilocybin mushrooms?
No. Amanita muscaria does not contain psilocybin; it contains muscimol and ibotenic acid, with a quite different effect profile. Beyond curiosity, the difference is practical: identifying species correctly matters, because there are toxic mushrooms with a similar appearance, and confusion during foraging can lead to severe poisoning. Here, mycology is a self-care tool as valuable as any other.
Are magic mushrooms legal in Spain?
Psilocybin and psilocin are listed in international control conventions, and in Spain, their possession and trade are subject to legal restrictions; the specific status of some species or Amanita muscaria may vary. We report this as an objective fact, not a warning: the legal framework changes over time and from one country to another—several places have decriminalized or opened paths for supervised use—so the sensible thing is to stay informed about the regulations in effect in each location.
What are the risks and how can harm be reduced?
The most significant effects are psychological: episodes of anxiety, a sense of loss of control, or difficult experiences (the so-called “bad trip”), which may be more likely in people with psychiatric histories or when mixing with other substances. From a harm reduction perspective, there are guidelines that help the experience go better: adjusting the dose, not mixing substances, taking care of the environment and company, having a trusted person present, and choosing a good time in one’s life. It is not about giving permission or denying it, but ensuring that those who decide to do so have the information to live the experience as carefully as possible.
