Psilocybin (Buy magic mushrooms near me in UK): What it is, effects and risks

What is psilocybin?

Psilocybin is a hallucinogenic chemical found in certain mushrooms, commonly known as magic mushrooms. It can provide feelings of euphoria and sensory distortion that are common to hallucinogenic drugs, such as LSD 1Psilocybin has recently been demonstrated in multiple clinical trials to function as an effective therapeutic aid in treating a wide variety of health disorders, including assisting with the management of depression, helping to deal with addiction, PTSD, and OCD, as well as promoting the growth of brain cells and even helping to manage the symptoms of cancer and terminal illnesses 23However, it is important to note that psilocybin is a Schedule I substance, meaning that the Drug Enforcement Administration (DEA) believes it has a high potential for abuse and serves no legitimate medical purpose 1The drug can trigger psychotic episodes, and individuals with a family history of psychosis face an increased risk of an adverse psychiatric reaction to psilocybin 1Therefore, it is essential to use psilocybin only under the guidance of a licensed healthcare professional 3


Psilocybin is a hallucinogenic chemical in certain mushrooms known as magic mushrooms. Eating mushrooms that contain psilocybin can have a variety of effects, ranging from euphoria to hallucinations.

Some people use psilocybin as a recreational drug. It can provide feelings of euphoria and sensory distortion that are common to hallucinogenic drugs, such as LSD.

Psilocybin is a Schedule I substance, meaning that the Drug Enforcement Administration (DEA) believes it has a high potential for abuse and serves no legitimate medical purpose.

Although current research does not consider psilocybin addictive, users may experience disturbing hallucinationsanxiety, and panic after taking the drug.

This article explains how psilocybin works, including the potential effects and risks.

Fast facts on psilocybin

  • Psilocybin can have both positive and negative physical and psychological effects.
  • Psilocybin is not naturally addictive.
  • The drug can trigger psychotic episodes.
  • Individuals with a family history of psychosis face an increased risk of an adverse psychiatric reaction to psilocybin.
  • What is psilocybin?
    Psilocybin mushrooms growing in a cluster.-1Share on Pinterest
    Psilocybin mushrooms stand ready for harvest in a humidified ‘fruiting chamber’ in the basement of a private home on July 28, 2023 in Fairfield County, Connecticut. Image credit: John Moore/Getty Images

    Psilocybin is a hallucinogen that people can ingest through certain types of mushrooms.

    How it works

    Psilocybin works by activatingTrusted Source serotonin receptors, most often in the prefrontal cortex. This part of the brain affects mood, cognition, and perception. Hallucinogens also work in other regions of the brain that regulate arousal and panic responses.

    Psilocybin does not always cause active visual or auditory hallucinations. Instead, it distorts how some people who use the drug perceive objects and people already in their environment.

    The quantity of the drug a person consumes, their past experiences, and their expectations of how the experience will take shape can all impact the effects of psilocybin.

    According to the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA), the hallucinogenic effects of psilocybin usually occur within 30 minutes after a person ingests it and last 4–6 hours.

    In some individuals, changes in sensory perception and thought patterns can last for several days.



    The potency of a magic mushroom depends on:

    • species
    • origin
    • growing conditions
    • harvest period
    • whether a person eats them fresh or dried

    The EMCDDA suggests the amount of psilocybin in dried mushrooms is about 10 times higher than that of their fresh counterparts.


    Mushrooms containing psilocybin are small and usually brown or tan. In the wild, people may mistake mushrooms containing psilocybin for any number of other mushrooms that are poisonous.

    People usually consume psilocybin as a brewed tea or prepare it with a food item to mask its bitter taste. Manufacturers also crush dried mushrooms into a powder and prepare them in capsule form.

    Some people who consume these mushrooms cover them with chocolate.

    Extent of use

    According to the National Survey on Drug Use and Health, 7.4 million Americans ages 12 and older used hallucinogens, including psilocybin, in 2021. Of this number, adults ages 18–25 were the most frequent users.

    Psilocybin has been used in various cultures and locations across the world, potentially as far back as 8,000 years ago, according to a 2022 reviewTrusted Source.

    In modern times, psilocybin use may be recreational at dance clubs or by people seeking a transcendent spiritual experience.

    In medical settings, psilocybin may show promise in helping to treat or manage the following conditions:

    However, the review authors highlight that research is ongoing.

    Street names for magic mushrooms

    People may also refer to magic mushrooms as:

    • shrooms
    • boomers
    • zoomers
    • mushies
    • simple Simon
    • little smoke
    • sacred mushrooms
    • purple passion
    • mushroom soup
    • cubes

    The effects of psilocybin are generally similar to those of LSD. They include altered perception of time and space and intense changes in mood and feeling.

    Other possible effects of psilocybin include:

    • euphoria
    • peacefulness
    • spiritual awakening
    • derealization, or the feeling that surroundings are not real
    • depersonalization, or a dream-like sense of being disengaged from surroundings
    • distorted thinking
    • visual alteration and distortion, such as seeing halos of light and vivid colors
    • dilated pupils
    • dizziness
    • drowsiness and yawning
    • impaired concentration
    • muscle weakness
    • lack of coordination
    • unusual body sensations
    • nausea and vomiting
    • paranoia
    • confusion
      • frightening hallucinations
    • What impacts effects?

      The effects of psilocybin vary between people, based onTrusted Source the user’s mental state, personality, and immediate environment.

      If the user has a mental health condition or feels anxious about using the hallucinogen, they face a higher risk of having a bad experience.

      Psychological distress is a potential adverse event after recreational use of psilocybin. This distress can take the form of extreme anxiety or short-term psychosis.

      Psilocybin as a treatment for depression

      Researchers have investigated whether psychological specialists can use psilocybin and similar hallucinogens to treat depression.

      One study examined the ability of psilocybin to reduce depression symptoms without dulling emotions. Results indicated that psilocybin may be successful in treating depression with psychological support.

      Psilocybin and other psychedelic drugs may helpTrusted Source people with depression by encouraging connections between neurons in the brain.

      However, more research is necessary for experts to understand exactly how this mechanism works and if there is a way to achieve it without hallucinogenic side effects.

    • Risks

      Some people who take psilocybin may experience persistent, distressing alterations to how they see the world. These may take the form of a visual flashback, a traumatic recall of an intensely upsetting experience.

      According to the National Institute on Drug Abuse, people can continue to experience flashbacks anywhere from weeks to years after using the hallucinogen. This is a condition called hallucinogen-persisting perception disorder and is rare.

      Some individuals who use psilocybin may also experience fear, agitation, confusion, delirium, psychosis, and syndromes that resemble schizophrenia.

      Finally, though the risk is small, some psilocybin users risk accidental poisoning from eating a poisonous mushroom by mistake.

      Symptoms of mushroom poisoning may include muscle spasms, confusion, and delirium. A person should visit an emergency room immediately if these symptoms occur.

      Because hallucinogenic and other poisonous mushrooms are common in most living environments, people should regularly remove all mushrooms from areas where children are routinely present to prevent accidental consumption.

      MostTrusted Source accidental mushroom ingestion results in minor gastrointestinal illness, with only the most severe instances requiring medical attention.

      Abuse potential

      Current research suggests psilocybin is not addictive, and no physical symptoms occur after stopping use. However, further research is necessary.

      After several days of psilocybin use, individuals might experienceTrusted Source psychological withdrawal and have difficulty adjusting to reality.

      Regular use may also cause an individual to become tolerant to the effects of psilocybin, and cross-tolerance occurs with other drugs, including LSD and mescaline.

      People who use these drugs should wait at least several days between doses to experience the full effect.


      How likely is it that I will have a bad trip taking magic mushrooms?



      A “bad trip” can include feelings of despair, confusion, paranoia, anxiety, and panic. These feelings can persist for hours to days.

      To avoid this, first, you will not have a bad trip or any trip at all if you choose not to ingest the mushrooms. If the mushrooms have a higher, stronger dose than expected, this can increase your chances of having a negative experience.

      For someone going through a personal crisis or using mushrooms in an unsafe, unsupportive environment, the chances of a “bad trip” increase.

      There are no guarantees with mushrooms since they are an unprocessed plant product, and bad trips can and do happen. If someone has ingested mushrooms and is experiencing panic, anxiety, or is in any danger of harming themselves or others, seek medical assistance immediately.

      Debra Rose Wilson, Ph.D., MSN, RN, IBCLC, AHN-BC, CHTAnswers represent the opinions of our medical experts. All content is strictly informational and should not be considered medical advice.

      Was this helpful?

      Psilocybin is a chemical that occurs in certain mushroom varieties. Consumption can lead to symptoms such as euphoria, hallucinations, and sensory distortion.

      Although current research suggests psilocybin is not addictive, some people may have bad experiences, including feelings of anxiety, paranoia, and short-term psychosis.

      Factors such as mental health, setting, quantity, and expectations may affect the experience someone has after using psilocybin.

      Magic mushrooms: How long do they stay in your system?

    • Magic mushrooms, or “shrooms,” are a type of mushroom containing psilocybin, a hallucinogenic compound. The length of time shrooms stay in a person’s system depends on many factors, including the strength of the mushroom, dose, and the individual’s body.

      People may take shrooms for spiritual or recreational purposes. Its hallucinogenic compounds can induce intense and long-lasting effects.

      These effects could last for hours, with no set time on when they will end. Similar factors may also play a role in how long shrooms take to kick in and whether they show up on a drug test.

      Keep reading to learn more

    • How long do they stay in the system?
      Close up of magic mushrooms.Share on Pinterest

      A person’s kidneys process the compounds in magic mushrooms, which include psilocybin, the primary ingredient responsible for shrooms’ hallucinogenic effects.

      The process happens relatively quickly, and in many cases, the kidneys excrete most of them from a person’s system in a few hours.

      Researchers note that about 66% of the compounds from shrooms get excreted in the first 3 hours after ingestion. After 24 hours, psilocybin becomes undetectable in a person’s urine.

      However, there is no exact time on how long other compounds will stay in the system, or how long the shrooms’ effects will last.

      Several factors may play a role in how the body handles these compounds, such as a person’s weight and metabolism, as well as the dose and type of mushroom ingested.

      Drug testing

      When shrooms are in a person’s system, how long they can remain detectable in drug tests can also vary widely.

      There are various drug tests available, with their own factors in screening methods, detection, and accuracy.

      The Drug & Alcohol Testing Industry Association list common drug tests and the compounds they detect. The most common screening is the five-panel test, which tests for the following substances:

      • amphetamines
      • cannabis
      • cocaine
      • opiates, such as heroin
      • phencyclidine, or PCP

      In addition, there are eight- and 10-panel tests.

      None of these screenings, including the five-panel test, check for the compounds contained in shrooms.

      However, other tests can detect hallucinogenic compounds, although the screenings may need administering promptly. This is because the body metabolizes the shrooms and their compounds relatively quickly. After 24 hours, a urine, blood, or saliva test may not detect mushrooms in a person’s system.

      Despite this, other screenings, such as a hair follicle test, may detect drugs over a longer period after ingestion, although they might not identify these substances in the first few days after exposure.

      How long does the high last?

      Shrooms can stay active in a person’s body for hours. Research suggests that the hallucinogenic effects may last 3–6 hoursTrusted Source after ingestion.

      While the exact timings vary from person to person, other factors may also play a role. These include:

      • weight and body composition
      • metabolism
      • age
      • dose
      • potency
      • type of shroom and amount a person consumes
      • preparation of the mushrooms, for example, dried or in tea
      • tolerance levels
      • the state of mind of the person taking them
      • preexisting mental health conditions
      • other drugs or substances a person takes at the time

      In addition, some people may be more sensitive to these compounds and experience a longer “high” or lingering effects after the initial high passes.

      How long do they take to kick in?

      Following ingestion, magic mushrooms take some time to start affecting the body. Research notes that hallucinogenic effects may commence within 20–40 minutes.Trusted Source

      While there are some natural variations to this, many people feel the effects of taking shrooms within 1 hour.

      These effects may come on gradually. A person may feel minor changes in their senses or feelings initially, which then progress to stronger visual, auditory, or other sensory hallucinations.


      The immediate effectsTrusted Source of hallucinogenic mushrooms come from the body breaking down psilocybin into psilocin. Psilocin acts in the brain similarly to other hallucinogens such as lysergic acid diethylamide, commonly known as LSD.

      After ingesting shrooms, a person may feel relaxed or drowsy, while others may experience a sense of unity or peace with their surroundings. These sensations may progress and get more intense.

      The immediate effects generally only last a few hours. Some may experience a lingering sense of ease from a positive experience or a lingering sense of unease from a negative one.

      In addition, a higher dose can trigger feelings of euphoria and hallucinations. These can be visual and auditory, while a person can also have extrasensory experiences within the body and mind.

      These hallucinatory effects can be positive or negative, perhaps due to a person’s frame of mind and surroundings. A negative experience may cause people to feel paranoid, anxious, or panicked. In contrast, a positive experience may cause a person to feel intense euphoria or awe.

      Risks and side effects

      People should note that there are some risks when ingesting magic mushrooms.

      A person can have an unenjoyable experience, or “bad tripTrusted Source,” while taking shrooms. These bad trips may cause:

      • feelings of intense confusion and fear
      • bad or scary hallucinations
      • difficult changes in their psychological state

      A more intense trip may disconnect a person from reality or make it difficult for them to understand what is real and what is a hallucination.

      The experience and sensations may have associations with a person’s current mental state and surroundings.

      There may also be some physical side effects from taking the mushrooms, including:

      • stomach ache
      • nausea
      • vomiting
      • muscle weakness
      • confusion
      • lack of coordination

      The Drug Enforcement Administration (DEA) note that using shrooms could lead to poisoning if a person takes a misidentified mushroom. Some poisonous mushrooms may appear similar to hallucinogenic shrooms, and taking them could lead to serious or potentially fatal issues.

      The DEA also state that it is possible to overdose on shrooms, which may cause:

      • a longer, intense trip
      • psychotic episodes
      • death

      There is also the risk of criminal prosecution for using the substance. The federal government consider psilocybin a Schedule 1 substance, similar to drugs such as heroin and crack cocaine. This means the compound is considered highly abusable, has no medical use, and lacks accepted safety measures for use under supervision.

      Shrooms as an alternate therapy

      The medical community has some interest in potential medicinal uses for hallucinogenic mushrooms.

      Some research suggests that psilocybin from shrooms could help treat several health issues, such as:

      However, it is important to note that research is in the early stages. More studies are needed to determine if magic mushrooms can definitively serve as an effective form of treatment.

      When to seek medical attention

      Anyone who suspects they are experiencing poisoning from a magic mushroom should seek immediate medical attention.

      A person suffering from a bad trip does not necessarily need to go to the hospital. However, intense feelings or a total detachment from reality may indicate an intense trip or overdose. Monitoring the person or taking them to the hospital may be the best course of action in these cases.

      People who feel they are becoming psychologically dependant on magic mushrooms could benefit from seeing a mental health expert.

      Constantly chasing altered state experiences using hallucinogens may indicate a risk for psychological dependency.


      Hallucinogenic mushrooms contain compounds that act on the brain to cause their effects. Taking these shrooms can cause hallucinatory sensory experiences that may last hours.

      The body metabolizes the compounds in magic mushrooms relatively quickly, while the shrooms and their compounds may be out of the body within 24 hours in most cases.

      Common drug tests involving saliva or blood samples will not likely screen for the hallucinogenic compounds in shrooms. Specific tests to identify them will need administering within around 24 hours after ingestion to detect these substances.

      There are some risks to consider before using mushrooms, and some people may wish to avoid them altogether.

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