Driving after taking mushrooms is dangerous while the effects are still active.
Psilocybin, the active ingredient in magic mushrooms, can change what you see, and objects that are still can look as if they’re moving. Psilocybin also weakens your attention and slows your reaction time, with bigger doses producing stronger effects. The effects usually last several hours, but for some people, visual disturbances carry on after the trip is over.
The research on the possible effects of psilocybin on driving is thin, and driving on mushrooms itself has not been directly tested.
In some European countries, a trace of a drug in your body is an offence, whether you feel affected or not. In others, police must show your driving was impaired.
Aside from this, put simply: driving under the influence of mushrooms can put yourself and others in danger.
How psilocybin affects the brain
Psychedelic drugs impact your health and wellbeing in different ways.
After you take psilocybin, your body converts it into psilocin, the form that affects your brain. Psilocin acts mainly on three types of receptor for serotonin, one of your brain’s chemical messengers.
Psilocybin changes how different parts of your brain work together, impacting your sense of time, distance, and what’s going on around and inside you.
A 2024 study in Nature scanned the brains of a small group of healthy young adults before, during, and after a high dose of psilocybin (25 mg). The scans showed activity in their brain networks falling out of step.
What are the effects of magic mushrooms on driving ability?
In a 2025 study, 21 healthy volunteers on a high dose watched still and moving images. For 15 of them, accuracy at telling the two apart fell on average from almost 100% on placebo to 76% on psilocybin. The other six couldn’t complete the task at the drug’s peak.
Magic mushrooms affect your attention and reactions too. A 2024 review of 122 papers found evidence that psychedelics reduce attention while they’re working, and the authors say the results are useful when deciding whether to drive.
Other effects could affect your driving too. The European Union Drugs Agency (EUDA) lists:
- Restlessness
- Poor coordination
- Anxiety
- A sense of unreality
- Panic or psychosis-like states.
No study has shown whether feeling clear-headed makes driving after taking mushrooms safe.
Why the length of a trip is hard to predict
How long mushrooms last varies from person to person and is difficult to predict.
EUDA gives mushroom trip duration as four to six hours. In a clinical study of three doses, the average effect lasted between 5.5 and 6.4 hours.
For some people, visual disturbances carry on after a trip. This is called ‘hallucinogen persisting perception disorder (HPPD)’ which has been linked mainly to LSD, with psilocybin among the other triggers.
Strength varies too. Recreational doses range from one to five grams of dried mushrooms.
Nobody can give you a safe time for how long after taking mushrooms you can drive, because a safe time hasn’t been tested.
Why mushrooms are different from alcohol or cannabis
With alcohol, a blood test tracks how impaired you are and how likely you are to crash. A 2023 review of legal limits calls that link widely accepted. For hallucinogens, the link between blood level and impairment is less clear. Instead, mushrooms usually fall under the general laws against driving on any drug.
“In 33 years of sobriety and over 30 years as a clinician, I’ve learned that recovery isn’t about giving something up. It’s about putting down the substance, grieving, then creating a meaningful life that you no longer want to escape.”
Drug driving laws in Europe – what you need to know
Europe has no single rule on drug driving. The drug driving laws Europe applies fall into three types:
- Impairment laws need proof that a drug affected your driving.
- Limit laws make it an offence to drive above a set level of a drug.
- Zero tolerance laws make it an offence to drive with any trace of a drug.
EUDA’s overview notes that most ban driving under the influence of any substance, and a few refer to a list of named drugs. This is since traces of a drug can stay in your body after the effects fade.
In Great Britain, it’s an offence to drive with any of 17 named drugs above a set blood limit, and the Scottish regulations list them. A separate offence in the Road Traffic Act 1988 covers driving while unfit through drugs of any kind.
How drug driving is detected
In about half of the 26 countries in EUDA’s overview, police can test your saliva at the roadside, and some look for physical or behavioural signs. Nearly all of the countries require a blood test, usually taken in a hospital, before they can prosecute a driver.
Psilocybin is harder to detect. It turns quickly into psilocin, and a 2024 laboratory study says routine screening tests need specialised methods. In Great Britain, though, the Department for Transport says police can arrest you even if you pass the roadside check, when they suspect drugs have impaired your driving.
Penalties for driving under the influence of psychedelics
Psychedelic drug driving penalties depend on the country and on what happened. For limit and zero tolerance offences, penalties are mostly fines. Some countries also suspend your licence or require a drug education or treatment programme. Prison is possible in serious cases.
In Great Britain, the Department for Transport lists a driving ban of at least 12 months, an unlimited fine, up to six months in prison and a criminal record. The offence stays on your licence for 11 years.
Earlier convictions or accidents where someone is harmed can make the sentence harsher.
If you’re concerned about someone’s psychedelic use
If you know someone who takes mushrooms and you’re worried about them driving, offer a lift, or a place to stay.
If you’ve seen them drive after taking mushrooms more than once, choose a time when they haven’t taken any. Explain what you’ve noticed, such as them driving soon afterwards or saying that feeling fine means they’re safe to drive. Repeated risks like these are a good reason to ask whether they’d like support with their mushroom use. Listen to the answer, and let them decide how much to share.
If they want help, you can point them to support through our drug addiction treatment and family therapy. For more on what you’re seeing, read our guides to understanding drug use and dependence and addiction and mental health.
We’ve helped many people turn their lives around
Frequently asked questions about driving after taking mushrooms
Is psilocybin detectable in a roadside drug test?
Not on the eight roadside saliva devices tested in a 2011 study, which covered drugs such as cannabis and cocaine and left out psilocin. EUDA’s 2012 summary says none of the devices were accurate enough to meet its 80% target for every drug tested.
What are the penalties for drug driving with psilocybin specifically?
EUDA’s overview lists penalties by country and offence, with no separate column for individual drugs. If a law names its drugs, check whether psilocybin is on the list. In Great Britain, psilocybin has no set blood limit, so the offence depends on whether drugs impaired your driving.
Can a small or “microdose” of psilocybin still impair driving?
We don’t know yet, and there are few studies. The 2024 review found most microdose studies saw no effect on thinking tests. The 2026 review found no driving studies at any dose, and mushroom strength varies from one mushroom to the next.
Where can I find support if I'm worried about my relationship with psychedelics?
We offer outpatient and inpatient treatment for drug use, and our outpatient team works with people across Europe. For more, see our outpatient support for substance use across Europe and drug addiction treatment.
A note on making informed decisions
Don’t drive after taking mushrooms. It’s dangerous, and in most of the 26 countries in EUDA’s overview, driving under the influence of any substance is an offence.
No study has set a safe time to wait, and feeling clear-headed hasn’t been shown to make driving safe.
