chemistry

Psilocybin therapy

Psilocybin therapy is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Psilocybin therapy rather than just read about it. In short: Psilocybin therapy (or psilocybin-assisted therapy) is the use of psilocybin (the psychoactive ingredient in psilocybin mushrooms) in treating a range of mental health conditions, such as depression, anxiety, addictions, obsessive compulsive disorder (OCD), and psychosis. It is one of several forms of psychedelic therapy under study.

Key takeaways

Psilocybin therapy belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Psilocybin therapy to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Psilocybin therapy from memory before moving on to harder problems.

Reference excerpt

Psilocybin therapy (or psilocybin-assisted therapy) is the use of psilocybin (the psychoactive ingredient in psilocybin mushrooms) in treating a range of mental health conditions, such as depression, anxiety, addictions, obsessive compulsive disorder (OCD), and psychosis. It is one of several forms of psychedelic therapy under study. Psilocybin was popularized as a psychedelic recreational drug in the 1970s and was classified as a Schedule I drug by the DEA. Research on psilocybin as a medical treatment was restricted until the 1990s because of the sociocultural fear of dependence on this drug. As of 2022, psilocybin is the most commonly researched psychedelic due to its safety and low potential for abuse and dependence. Clinical trials are being conducted at universities and there is evidence confirming the use of psilocybin in the treatment of depression, post-traumatic stress disorder (PTSD) and end-of-life anxiety.

History The first historical record of psilocybin use dates back to Mesoamerica. A Codex known as the "Yuta Tnoho" or "Vindobonensis Mexicanus I" that belonged to the Mixtec culture in the 1500s BCE depicted religious and medicinal ritual ingestion of psilocybin-containing mushrooms. Fungi were a prominent feature in Mixtec cultures, with over 5,000 different names of common edible mushrooms known across Mexican languages. Despite colonists' efforts to eradicate these ceremonies, ritualistic consumption of Psilocybe mushrooms continues in modern spiritual and medicinal practice. The hallucinations produced by the psilocybin induce a trance-like state that is believed to allow the soul to disconnect from the body, resulting in healing and spiritual enlightenment. Traditional psilocybin use was typically achieved through the consumption of dried or fresh psilocybin-containing mushrooms. However, in 1959, Albert Hofmann, a Swiss chemist, became the first person to extract pure psilocybin from the mushroom Psilocybe mexicana. Sandoz, the company that employed Hofmann, then began to sell the active compound to clinicians as an aid in psychedelic psychotherapy. Albert Hofmann's discovery of psilocybin played a pivotal role in catalyzing the Psychedelic Era, a cultural phenomenon that unfolded during the 1960s and 1970s. This era witnessed significant societal, musical, and artistic transformations, many of which were heavily influenced by the use of psychedelic substances, including psilocybin. At this time, though, there was very little known about psychedelics and their long-term effects. In August 1960, Timothy Leary conducted a self-experiment using psilocybin mushrooms. After trying pure, extracted psilocybin, he and Dr. Richard Alpert conducted research on whether it could help reduce recidivism rates and constitute an effective psychotherapy aid. In 1963, Leary and Alpert were suspended from their jobs at Harvard University, for engaging in irresponsible and dangerous experimentation with psilocybin mushrooms. Psilocybin research in the United States ended in 1970 when the use and possession of psilocybin mushrooms became illegal. In 2018–19, the United States Food and Drug Administration (FDA) granted breakthrough therapy designation to facilitate further research for psilocybin in the possible treatment of depressive disorders.

Neuroscience and pharmacology Psilocybin is the main psychoactive compound in the mushroom genus Psilocybe. Psilocybin (O-phosphoryl-4-hydroxy-N,N-dimethyltryptamine) and its active metabolite psilocin (4-hydroxy-N,N-dimethyltryptamine) are part of a group of tryptamine/indolamine hallucinogens that are related to serotonin. Psilocybin is a prodrug for psilocin, meaning that psilocybin is de-phosphorylated in the GI tract of the body into psilocin so it can cross the blood-brain barrier. Psilocin is a selective agonist of the 5-HT receptors, specifically 5-HT1A, 5-HT1B, 5-HT2A, 5-HT2B, and 5-HT2C. Although to a lesser extent, psilocin also bonds to dopamine D3 receptors, which may aid in treating substance use disorders. Further, psilocin has some effect on the amygdala and hypothalamus that aids in circadian rhythm regulation. Nausea, vomiting, muscle weakness, and lack of coordination are some of the physical side effects. Hallucinations and an inability to distinguish fiction from reality are among the psychological effects of psilocybin use. Panic attacks and psychotic-like episodes are also possible, especially if a large amount is consumed.

Research Use of psilocybin for treating depression is under preliminary research. Evidence to date indicates that psilocybin therapy produces substantial reductions in depressive symptoms, for major depressive disorder and treatment-resistant depression, and also for depression associated with life-threatening cancer. Similarly, psilocybin therapy has been found to increase rates of remission from depression.

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Psilocybin therapy

Start with the simplest possible case. Write down what Psilocybin therapy claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Psilocybin therapy before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Psilocybin therapy ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Psilocybin therapy

In research: Psilocybin therapy appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Psilocybin therapy in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Psilocybin therapy is common in secondary-school and first-year university syllabi. It links to neighbouring topics Drug discovery, Health policy, Medicinal chemistry, so understanding it makes those chapters shorter.
In everyday life: Look for Psilocybin therapy outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Psilocybin therapy in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Psilocybin therapy means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Psilocybin therapy out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Psilocybin therapy in simple terms?

Why does Psilocybin therapy matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Psilocybin therapy?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Psilocybin therapy.