Mushroom Gummies Side Effects
The side effects of mushroom gummies, why they vary with what the product contains, the physical and psychological adverse effects, and the risk of unknown ingredients.
Clinically reviewed by Dr. Ponlawat Pitsuwan, Physician and Addiction Medicine Specialist, Phuket Island Rehab.
The side effects of mushroom gummies depend on what the product contains, because mushroom gummies are edible products that may contain very different active substances. Gummies that contain psilocybin (from magic mushrooms) can cause side effects such as nausea and vomiting, headache, dizziness, a rapid heartbeat, changes in blood pressure, dilated pupils, and, psychologically, anxiety, paranoia, panic, confusion, and a difficult or frightening trip, since psilocybin is a psychedelic. Gummies that contain amanita muscaria produce different side effects, including sedation, confusion, dizziness, loss of coordination, muscle twitching, nausea, and, at higher doses, vomiting, delirium, and potentially dangerous toxicity, as amanita can be poisonous. A major problem is that mushroom gummies often have unclear or mislabelled ingredients and unpredictable potency, so a person may not know what they are taking or how strong it is, which makes side effects hard to predict and increases the risk of unexpectedly severe reactions or accidental overconsumption (they are easy to eat too many of). People with mental health vulnerabilities are at particular risk of serious psychological effects. If someone becomes seriously unwell after taking mushroom gummies, especially with severe vomiting, confusion, or reduced consciousness, it is a medical emergency. If mushroom gummy use is causing concern, help is available.
What side effects do mushroom gummies cause?
The side effects of mushroom gummies depend heavily on what the product actually contains, because mushroom gummies are edible products that can contain very different active substances. Some contain psilocybin, the psychedelic compound in magic mushrooms; others contain amanita muscaria (the fly agaric mushroom), which has different, potentially toxic active compounds; and some are based on non-psychoactive functional mushrooms. Because of this, there is no single set of side effects for mushroom gummies, and understanding the possible adverse effects means knowing which type of product is involved, which, as this article explains, is often far from clear. In general, the psychoactive types can cause a range of physical and psychological side effects, and amanita products in particular can be genuinely toxic.
This article describes the side effects of mushroom gummies, physical and psychological, how they differ depending on the active substance (psilocybin versus amanita muscaria), and, crucially, why the frequent problem of unclear or mislabelled ingredients and unpredictable potency makes those side effects hard to predict and increases the risk. A central message is that because these products are often poorly regulated, a person frequently does not know what they are taking or how strong it is, so they cannot reliably anticipate the effects, and unexpectedly severe reactions or accidental overconsumption are real risks. The article also notes when side effects become a medical emergency. Anyone using mushroom gummies, or considering it, should understand that the side effects can be significant and unpredictable, and the underlying message is that if their use is causing concern or harm, help is available.
Side effects of psilocybin mushroom gummies
Gummies that contain psilocybin can cause the side effects associated with magic mushrooms, since psilocybin is a psychedelic. Physical side effects can include nausea and vomiting (common with psilocybin), stomach discomfort, headache, dizziness, a rapid or pounding heartbeat, changes in blood pressure, dilated pupils, sweating or chills, muscle weakness, and coordination problems. These physical effects, while usually not the most serious aspect, can be unpleasant, and the nausea in particular is common. The effects typically come on within an hour or so of eating the gummy and last several hours.
The more significant side effects of psilocybin gummies are psychological. Psilocybin profoundly alters perception, mood, and thinking, and while some people find the experience positive, it can also cause anxiety, paranoia, panic, confusion, disorientation, and a distressing or frightening experience (a bad trip), especially at higher doses, in unfamiliar or stressful settings, or in people who are anxious or vulnerable. People may experience overwhelming fear or a sense of losing control, and impaired judgement can lead to unsafe behaviour. For people who are vulnerable to or have a history of mental health problems, including anxiety and psychosis, psilocybin can trigger or worsen serious psychological reactions, and in a minority of people, lasting effects such as persistent anxiety or ongoing perceptual disturbances can occur. While psilocybin itself is not considered physically addictive and a lethal overdose is not a typical risk, these psychological side effects are the main concern, and they can be significant. A particular problem with gummies is that, being sweets, they are easy to eat too many of, and with unpredictable potency this can lead to an unexpectedly intense experience.
| Product type | Common side effects |
|---|---|
| Psilocybin gummies (physical) | Nausea, vomiting, headache, dizziness, rapid heartbeat, dilated pupils |
| Psilocybin gummies (psychological) | Anxiety, paranoia, panic, confusion, bad trip |
| Amanita muscaria gummies | Sedation, confusion, dizziness, muscle twitching, nausea |
| Amanita at higher doses | Vomiting, delirium, toxicity (can be dangerous) |
| Underlying risk | Unclear ingredients and potency; easy to overconsume |
| Highest risk group | People with mental health vulnerabilities |
Side effects of amanita muscaria gummies and the ingredient problem
Gummies that contain amanita muscaria cause different side effects, because its active compounds (muscimol and ibotenic acid) act differently on the brain from psilocybin, and importantly, amanita can be toxic. Side effects can include sedation, drowsiness, dream-like or altered states, confusion, dizziness, loss of coordination, and muscle twitching or spasms, and nausea. At higher doses, amanita muscaria can cause more serious effects, including significant vomiting, profuse sweating, agitation, marked confusion and delirium, and, in serious cases, seizures and a dangerously depressed level of consciousness. Because amanita is genuinely poisonous, taking too much can amount to a poisoning that may require emergency treatment. Since it is sometimes marketed as a legal alternative to psilocybin, people may wrongly assume it is safe; legal does not mean safe.
Underlying all of this is a critical problem that makes the side effects of mushroom gummies especially unpredictable: unclear, inconsistent, or mislabelled ingredients and uncertain potency. These products are often poorly regulated, and testing has found that what is on the label frequently does not match what is inside; a gummy may contain a different substance than stated, far more or less than claimed, or additional substances. As a result, a person often does not know what they are really taking or how strong it is, so they cannot reliably predict the side effects, and the risk of an unexpectedly severe reaction is real. On top of this, because the products are appealing sweets, it is easy to eat too many, leading to accidental overconsumption of an unknown, possibly potent, substance, and they pose a danger if children get hold of them. This uncertainty is why the side effects of mushroom gummies should be regarded as unpredictable and potentially serious. If someone becomes seriously unwell after taking mushroom gummies, particularly with severe or persistent vomiting, marked confusion or delirium, agitation, seizures, or a reduced level of consciousness, it should be treated as a medical emergency, especially with amanita, which can be toxic.
Summary
The side effects of mushroom gummies depend on what the product contains, because mushroom gummies may contain very different active substances. Gummies that contain psilocybin can cause side effects such as nausea and vomiting, headache, dizziness, a rapid heartbeat, changes in blood pressure, dilated pupils, and, psychologically, anxiety, paranoia, panic, confusion, and a difficult or frightening trip. Gummies that contain amanita muscaria produce different side effects, including sedation, confusion, dizziness, loss of coordination, muscle twitching, nausea, and, at higher doses, vomiting, delirium, and potentially dangerous toxicity, as amanita can be poisonous. A major problem is that mushroom gummies often have unclear or mislabelled ingredients and unpredictable potency, so a person may not know what they are taking or how strong it is, which makes side effects hard to predict and increases the risk of unexpectedly severe reactions or accidental overconsumption. People with mental health vulnerabilities are at particular risk of serious psychological effects. If someone becomes seriously unwell after taking mushroom gummies, especially with severe vomiting, confusion, or reduced consciousness, it is a medical emergency. If mushroom gummy use is causing concern, help is available.
As Dr. Ponlawat Pitsuwan, addiction medicine specialist at Phuket Island Rehab, puts it, “When people ask about the side effects of mushroom gummies, my honest answer is that it depends entirely on what is in them, and the frightening part is that often nobody knows. With psilocybin you get the nausea and the psychological effects, the anxiety, the paranoia, the bad trips. With amanita muscaria you get sedation and confusion, and it can genuinely poison you at higher doses. Because these are sweets with unreliable labels, people eat too many of something they cannot identify. If anyone is badly unwell after them, especially confused or vomiting hard, that is an emergency, not something to wait out.”
Frequently asked questions
What are the side effects of mushroom gummies?
It depends on what the gummy contains. Psilocybin gummies can cause physical side effects such as nausea and vomiting, headache, dizziness, a rapid heartbeat, changes in blood pressure, and dilated pupils, and psychological side effects such as anxiety, paranoia, panic, confusion, and a difficult or frightening trip, since psilocybin is a psychedelic. Amanita muscaria gummies cause different side effects, including sedation, confusion, dizziness, loss of coordination, muscle twitching, and nausea, and at higher doses vomiting, delirium, and potentially dangerous toxicity, as amanita can be poisonous. A major complication is that mushroom gummies often have unclear or mislabelled ingredients and unpredictable potency, so a person may not know what they are taking or how strong it is, making the side effects hard to predict. People with mental health vulnerabilities are at particular risk of serious psychological effects. Serious reactions, especially severe vomiting, confusion, or reduced consciousness, are a medical emergency.
Can mushroom gummies make you sick?
Yes, mushroom gummies can make you sick, and nausea and vomiting are among the more common side effects, particularly with psilocybin, which frequently causes stomach upset. Beyond nausea, you may experience headache, dizziness, a rapid heartbeat, and other physical effects. With amanita muscaria gummies, sickness can be more serious: at higher doses amanita can cause significant vomiting, profuse sweating, and, because it is toxic, symptoms of poisoning that may need emergency treatment. Because the potency and even the contents of mushroom gummies are often unknown, and because they are easy to eat too many of, a person can end up consuming much more than intended, increasing the chance and severity of sickness. If sickness is severe, persistent, or accompanied by marked confusion, agitation, seizures, or reduced consciousness, especially with amanita, it should be treated as a medical emergency. So mushroom gummies can certainly cause sickness, ranging from unpleasant nausea to, with amanita, dangerous toxicity.
Are amanita muscaria gummies dangerous?
Amanita muscaria gummies can be dangerous, because amanita muscaria is genuinely toxic. Its active compounds cause sedation, confusion, dizziness, loss of coordination, and muscle twitching, and at higher doses can cause significant vomiting, agitation, marked confusion and delirium, and, in serious cases, seizures and a dangerously depressed level of consciousness, which can require emergency treatment. The dose that produces toxic effects is not far above the dose sought for its effects, and because the potency of gummies is often unknown and inconsistent, the risk of taking a harmful amount is real. Amanita is sometimes marketed as a legal alternative to psilocybin, which can create a false impression that it is safe, but legal does not mean safe, and there is much less established knowledge about safe use than people assume. For these reasons, amanita muscaria gummies carry genuine risks of poisoning and dangerous reactions. If someone becomes seriously unwell after taking them, it is a medical emergency.
Why are the side effects of mushroom gummies unpredictable?
The side effects of mushroom gummies are unpredictable mainly because of uncertainty about what they contain and how strong they are. These products are often poorly regulated, and testing has repeatedly found that the ingredients and potency on the label do not match what is actually inside: a gummy may contain a different substance than stated, far more or less than claimed, or additional substances. Because psilocybin is controlled in many places, some products substitute other, legal but less understood substances. As a result, a person frequently cannot know what they are really taking or in what amount, so they cannot reliably anticipate the effects. On top of this, because the products are appealing sweets, it is easy to eat too many, leading to accidental overconsumption of an unknown, possibly potent, substance. Individual factors and the setting also affect the experience, particularly for psychedelics. This combination of unknown contents, uncertain potency, and ease of overconsumption is exactly why the side effects can be unexpectedly severe and are so hard to predict.
When are mushroom gummy side effects a medical emergency?
Mushroom gummy side effects are a medical emergency when someone becomes seriously unwell, particularly with severe or persistent vomiting, marked confusion or delirium, agitation, seizures, a dangerously reduced level of consciousness or difficulty staying awake, or difficulty breathing. This is especially important with amanita muscaria, which can be toxic and cause dangerous poisoning at higher doses. In any of these situations, call your local emergency number immediately and stay with the person. A severe panic or distressing psychological reaction, for example on psilocybin, while not usually physically dangerous, needs the person to be kept calm and safe in a quiet environment, and emergency help should be sought if they are at risk of harming themselves or others. Because the contents and potency of mushroom gummies are often unknown, it is wise to err on the side of seeking help if someone is significantly unwell. Prompt medical attention can be crucial, particularly with amanita toxicity, so do not wait to see if severe symptoms pass on their own.
Are mushroom gummies safe to use?
Mushroom gummies are not reliably safe, largely because of uncertainty about what they contain and the genuine risks of their active substances. Being sold openly or marketed as wellness or legal products does not make them safe. Psilocybin gummies carry the psychological risks of any psychedelic, including frightening experiences and, for vulnerable people, serious or lasting reactions, plus physical side effects. Amanita muscaria gummies can be toxic. And with both, unclear or mislabelled ingredients, unpredictable potency, and the ease of eating too many mean a person often cannot control or anticipate what they are taking. People with a history of mental health problems are at particular risk and are advised to avoid them. So while the side effects vary, mushroom gummies carry real and sometimes unpredictable risks, and they should not be regarded as safe. If mushroom gummy or other substance use is causing concern, becoming frequent, or feeling hard to control, it is worth seeking advice, and help is available.
Sources
National Institute on Drug Abuse (NIDA). Psilocybin (Magic Mushrooms). https://nida.nih.gov/research-topics/psilocybin-magic-mushrooms
Food and Drug Administration (FDA). Safety alerts on mushroom-containing edible products. https://www.fda.gov/
America’s Poison Centers. Mushroom and amanita exposures. https://poisoncenters.org/
National Library of Medicine (MedlinePlus). Hallucinogens. https://medlineplus.gov/
Substance Abuse and Mental Health Services Administration (SAMHSA). Substance Use. https://www.samhsa.gov/
Royal College of Psychiatrists. Recreational drugs and mental health. https://www.rcpsych.ac.uk/
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