Usually not for hours. Psilocybin (the compound in magic mushrooms, also called shrooms) is a psychedelic that changes perception and emotions, raises heart rate and blood pressure, and can bring intense fear or panic in some people (NIDA). Those effects are the opposite of what the brain needs to fall asleep. Only a few small studies have measured psilocybin’s effect on sleep itself, so there is no firm answer on how it changes sleep. This page is general information about what is known and what is not. It does not tell anyone how to use psilocybin, and psilocybin is a controlled substance in many places.
What Does Psilocybin Do To The Body And Mind?
After someone takes psilocybin, the body converts it to psilocin, which acts on serotonin receptors in the brain, mainly the 5-HT2A receptor (NIDA). NIDA describes the effects as distorted sights and sounds, a lost sense of time and space, and emotions that can range from bliss to terror. Physical effects can include a faster heart rate and nausea. NIDA also notes that the response depends on the amount and potency, plus mindset, surroundings, age, biology and history of drug use, so effects are hard to predict (NIDA).
Lab data fit that picture. In a 2004 double-blind study of 8 healthy volunteers, psilocybin raised scores on altered-consciousness ratings in a dose-dependent way. At the medium and high doses, performance on an attention test fell by 50 percent, and the highest dose moderately raised mean arterial blood pressure 60 minutes after it was given (Hasler et al., Psychopharmacology 2004). That study measured mind, mood and body, not sleep.
How long does it last? A 2022 crossover study in healthy volunteers measured the half-life of active psilocin at 1.8 hours (range 1.1 to 2.2 hours), which the authors described as consistent with the short duration of action of psilocybin (Becker et al., Clin Pharmacol Ther 2022). In practice that means effects are measured in hours, not minutes. None of the sources used here gives a single reliable end time, because duration varies from person to person and product to product.
Why Is Sleeping Hard While The Effects Last?
None of the sources used for this page tested sleep during the acute effects in people, so the reasons below come from what the effects are, not from sleep measurements.
- Stimulation. A raised heart rate and blood pressure, plus agitation, are listed effects (NIDA). A body in that state is not set up for sleep.
- Anxiety and fear. Some people have extreme fear, anxiety, panic or paranoia, known as a bad trip (NIDA). Racing worry is a classic block to falling asleep; our guide to insomnia and anxiety explains how the two feed each other.
- Altered perception. Shifts in sights, sounds and time (NIDA) make it hard to settle, and hard to tell whether you are drowsy at all.
- Nausea and discomfort. Nausea and vomiting are possible side effects and can be severe (NIDA).
The practical point is that trying to sleep through the effects is not a reliable plan. If rest is the goal, it usually has to wait until the effects have worn off.
Stage By Stage: What To Expect And What To Watch For
This table summarises the sources on this page. Timing differs between people, so the stages are general, not a schedule.
| Stage | What to expect | Safety note |
|---|---|---|
| While effects are active | Altered perception and time sense, strong emotions, faster heart rate, possible nausea. Sleep is unlikely. | People can put themselves at risk, such as by driving or walking in traffic (NIDA). Do not drive. |
| If it turns frightening | Fear, panic or paranoia (a bad trip). | NIDA links these drugs to injuries when no one else is present who can help in an emergency (NIDA). |
| As effects fade | The active compound has a half-life of about 1.8 hours (Becker et al.), so effects wind down over hours. Tiredness and a restless mind can overlap. | Severe vomiting, confusion or agitation needs medical attention (NIDA). |
| The next night | In one small study, REM sleep started later and first-cycle deep sleep activity was lower (see below). | One poor night is not a reason to panic, and it is not a reason to take anything else to force sleep. |
| Days afterwards | Brief, mild flashbacks within a week are possible; a long-lasting disorder is rare (NIDA). | If distress, low mood or odd perceptions last, speak to a clinician. |
What Is Known About Sleep Itself?
Very little, and mostly from small or early studies. Here is what the abstracts say.
The Night After A Daytime Dose
A 2020 study in 20 healthy volunteers measured sleep with EEG on the night after psilocybin and after placebo, in a randomized double-blind design (Dudysova et al., Frontiers in Pharmacology 2020). Compared with placebo, REM sleep started later (longer REM latency) and there was a trend toward less REM sleep overall. Non-REM sleep did not change, but slow-wave activity in the first sleep cycle was lower. The authors found no evidence of the sleep-related neuroplasticity they had hypothesised, and noted that dose and timing could matter. This is one study of healthy adults, so it cannot say what happens in other people or other settings. To learn what REM and deep sleep are, see our guide to the stages of sleep.
Animal Studies
In mice, psilocin delayed the start of REM sleep and reduced non-REM sleep maintenance for up to about 3 hours after dosing, with no long-term changes in total sleep (Transl Psychiatry 2022). Mouse results do not transfer directly to people.
Sleep And Psilocybin In Treatment Research
A 2024 review in Current Psychiatry Reports found that clinical trials show large improvements in depression symptoms, but that psilocybin’s impact on sleep quality or insomnia symptoms has not been directly studied. In the authors’ own preliminary data, sleep disturbances decreased after psilocybin use in people with depression, though less than depressive symptoms, and more severe sleep problems at baseline were linked to a lower chance of remission (Curr Psychiatry Rep 2024). That research is about treatment under study conditions. It does not show that psilocybin helps sleep, and NIDA says researchers still have much to learn about psilocybin as a medicine (NIDA).
Safety: What The Sources Say To Watch For
- Do not drive. NIDA lists driving dangerously among the risky behaviours that can follow psilocybin use in an unsupervised setting, and says more research is needed on the effect of psychedelic drugs on driving and operating machinery (NIDA psilocybin page, NIDA psychedelics page).
- Distress is the most likely risk. A safety review of human research with hallucinogens names overwhelming distress during drug action as the most likely risk, which could lead to dangerous behaviour such as leaving a safe place (Johnson et al., J Psychopharmacol 2008).
- Not alone if distressed. NIDA notes that injuries are more likely when no other person is present to help prevent or respond to an emergency (NIDA).
- Heart conditions. Psilocybin typically raises blood pressure and heart rate, which may be dangerous for people with heart conditions (NIDA).
- Mental health history. Researchers exclude volunteers with a personal or family history of psychotic disorders as a safeguard, and prolonged psychoses triggered by hallucinogens are less common but reported (Johnson et al.). NIDA says there is some evidence that psychedelic drugs might trigger a schizophrenia-like illness in people with predisposing factors (NIDA).
- Mixing and contamination. Contaminants or combinations with other substances can cause effects not seen with the drug alone, and NIDA warns about misidentified mushrooms and about products found to contain toxic chemicals (NIDA).
- Pregnancy. NIDA says there is no data on psilocybin’s safety in pregnancy (NIDA).
NIDA also states that psilocybin has low toxicity, meaning a low chance of fatal events such as breathing problems or a heart attack, but that there are still health risks, particularly when unsupervised (NIDA). In the United States the DEA lists most psychedelic drugs as controlled substances, and the legal picture varies by place and is changing (NIDA).
When To Get Help
NIDA says side effects such as agitation, confusion and vomiting can be severe and may need medical attention (NIDA). Seek emergency care for severe symptoms, or if someone cannot be calmed or is in danger. If you or someone you know is struggling or having thoughts of suicide, call or text the 988 Suicide and Crisis Lifeline at 988 or chat at 988lifeline.org. In life-threatening situations, call 911 (NIMH). Outside the U.S., contact your local emergency number.
How To Support Sleep Afterwards
Once the effects have fully worn off, the basics are the same as for any rough night. These steps do not treat the effects of a drug, but they help the body return to its normal rhythm. The AASM suggests the following (AASM Sleep Education):
- Get up at the same time every day, even on weekends, and set a bedtime that allows 7 to 8 hours of sleep.
- Do not go to bed unless you are sleepy; if you do not fall asleep after 20 minutes, get out of bed and do something quiet with little light.
- Keep the bedroom quiet, relaxing and cool, and turn off electronic devices at least 30 minutes before bed.
- Avoid caffeine in the afternoon or evening, and avoid alcohol before bedtime.
Our sleep hygiene 101 guide covers these habits in more detail, and 10 bad sleep habits lists common ones that undo them. If you lost a night, the sleep debt calculator shows how many hours you are behind. If sleep problems carry on for weeks, or you feel low or anxious afterwards, talk to a doctor.
Can You Sleep On Shrooms FAQs
Can You Sleep While Tripping?
Usually not. The effects, including altered perception, strong emotions and a faster heart rate, work against falling asleep, and sleep becomes realistic only as the effects fade over hours (NIDA).
How Long Do The Effects Last?
Effects are measured in hours. The half-life of the active compound is about 1.8 hours, which the authors of one study called consistent with a short duration of action (Becker et al.). Duration varies between people, so there is no exact time to count on.
Does Psilocybin Change REM Sleep?
In one small study of 20 healthy volunteers, REM sleep started later the night after psilocybin and there was a trend toward less REM overall (Dudysova et al.). It is one study, so treat it as preliminary.
Can Psilocybin Help Insomnia?
That has not been shown. A 2024 review said the effect of psilocybin on insomnia symptoms has not been directly studied in clinical trials (Curr Psychiatry Rep 2024). Sleep changes seen in depression research are early findings.
Is It Safe To Be Alone On Shrooms?
NIDA links psychedelic use to injuries and safety problems, particularly when no other person is present who can help respond to an emergency (NIDA). If someone is frightened, confused or in danger, get emergency help.
What If I Cannot Sleep For Days Afterwards?
One bad night is common after any stressful or stimulating experience, but ongoing insomnia, anxiety or unusual perceptions should be checked by a doctor. A steady wake time and the other basic habits can help in the meantime (AASM).