What after-effects can follow ayahuasca?

Will ayahuasca change you?

Research reports that ayahuasca can produce lasting changes in mood, personality, self-perception and spirituality, but the changes are not guaranteed, not always positive, and depend on the person, the setting, and what happens afterward. One 12-month observational study of 66 first-time ceremony participants found depressive symptoms reduced by 51% and anxiety symptoms by 47% at 12 months. Ayahuasca does not automatically make anyone better, wiser, or healed; it is not a guaranteed fix, and reported gains require follow-up work to persist.

The same literature documents destabilizing effects. Psychedelics can, in some cases, cause psychologically destabilizing consequences, exacerbate mental health conditions, or instigate new symptoms, researchers warn. In a large observational survey of 10,836 ayahuasca consumers from more than 50 countries, 55.9% of respondents reported adverse mental health effects in the weeks or months after consumption, though for most participants reporting seven of the 10 effects, the duration was under one week. A person with a personal or family history of psychosis or bipolar disorder, or someone taking serotonergic medication, faces higher risk and should discuss the decision with a licensed clinician beforehand.

Sources, checked November 15, 2026: Long-term mental health and wellbeing outcomes associated with..., A landscape analysis of psychedelic retreat organizations advertising..., Ayahuasca and Dimethyltryptamine Adverse Events and Toxicity..., Adverse effects of ayahuasca: Results from the Global Ayahuasca..., Rapid antidepressant effects of the psychedelic ayahuasca in...

How long do ayahuasca changes last?

Reported improvements in depression, anxiety, self-efficacy and spirituality have been observed up to 12 months after ceremonies in one observational study of 66 first-time participants, with the largest reductions in people diagnosed with depression or anxiety. Not all gains hold: in a separate six-month study, depression and stress symptoms were statistically higher at 6 months than at 7 days, suggesting early gains can attenuate. In the Global Ayahuasca Survey, most reported mental health after-effects lasted under one week.

• 7 days: depressive symptoms reduced 75% relative to baseline across the full sample of 66 first-time participants
• 1 month: depressive symptoms still 59% below baseline
• 12 months: depressive symptoms 51% below baseline; anxiety reduced 47% and stress 46%
• Diagnosed participants: 60% reduction in depression and 64% in anxiety at 12 months
• Caveat: in the same study, depression and stress were higher at 6 months than at 7 days
• Caveat: most survey-reported mental health effects lasted less than one week

Sources, checked November 15, 2026: Long-term mental health and wellbeing outcomes associated with..., Adverse effects of ayahuasca: Results from the Global Ayahuasca...

Does ayahuasca change your personality?

The most consistent personality finding across five of six prospective studies was a long-term reduction in neuroticism or harm avoidance after ayahuasca. This is what the research reviews report; it is observational evidence about groups, not proof of change for any individual. UC Berkeley's psychedelic center also describes a study on long-term effects finding that ayahuasca may enhance neuroplasticity and structurally change parts of the default mode network.

Other reported changes include significantly increased spirituality at 1, 6 and 12 months, reduced negative affect at every measured time point in one study, and reduced self-alienation showing a 50% reduction at 12 months. These are group averages from observational studies with self-selected participants and sample attrition; 63.6% of the original sample completed the 12-month mental health measures in the 66-person study. They do not predict what any one person will experience.

Sources, checked November 15, 2026: Ayahuasca: A review of historical, pharmacological, and therapeutic..., Ayahuasca Therapy Information- UC Berkeley BCSP, Long-term mental health and wellbeing outcomes associated with...

What is integration and why does it matter after ayahuasca?

Integration means applying what happened in ceremony to daily life in the weeks that follow. ICEERS defines the post-session stage as part of its AyaSafe guidance and provides up to five free psychological integration sessions through its El Faro Support Center for people experiencing difficulties after ayahuasca. Reported gains in studies do not always hold: one study found depression and stress symptoms higher at 6 months than at 7 days.

What integration involves, at a basic level, is changing habits and circumstances in the weeks after ceremony: work, relationships, diet and mindset, as one Chacruna author describes it. No integration exercise in this guide is presented as a validated treatment, and ICEERS documents common integration mistakes made by people without psychological training who accompany these processes. Distress that persists or worsens belongs with a licensed clinician, not with an integration practice alone.

See our page on what ayahuasca integration means after you return home for the practices and their evidence base.

Sources, checked November 15, 2026: AyaSafe: Free Ayahuasca Safety Documents by ICEERS, The Art of Integration: How to Support Ayahuasca Experiences, Long-term mental health and wellbeing outcomes associated with..., The World's Best Practices for Integrating Ayahuasca

What are the side effects of ayahuasca?

The most common side effects are nausea and vomiting, followed by other physical and psychological reactions that are usually temporary. In the Global Ayahuasca Survey of more than 10,000 people, about 70% reported physical side effects, most often nausea and vomiting, and 69.9% reported acute physical adverse effects, with 2.3% saying they later needed medical attention.

• Common effects listed by the Alcohol and Drug Foundation: nausea, vomiting and diarrhea, increased blood pressure and heart rate, increased body temperature, euphoria, feelings of connection, introspection, intense visual and auditory hallucinations, powerful emotions, and anxiety, panic or fear.
• In experimental studies, common adverse effects were nausea, gastrointestinal discomfort, vomiting, transient anxiety, drowsiness, difficulty concentrating, fear, dissociation or depersonalization, confusion, moderate transient blood pressure and heart rate increases, and headaches.
• Less common effects from one reviewed survey: headache in 17.8% of participants, abdominal pain in 12.8%, aching muscles in 7.5%, breathing difficulties in 7.3%, chest pains in 4.7%, fainting in 4.1%, and fits or seizures in 1.3%. About 30.1% reported no side effects.
• In one study a high dose raised diastolic blood pressure by 9 mm Hg after 75 minutes, while rises in systolic pressure and heart rate were not statistically significant.

Sources: Ayahuasca: What It Is and Risks, Adverse effects of ayahuasca: Results from the Global Ayahuasca..., Ayahuasca - Alcohol and Drug Foundation, Ayahuasca: pharmacology, safety, and therapeutic effects - PMC

How does ayahuasca make you feel?

Most people report intense perceptual, emotional and cognitive changes during a session that lasts about four hours. A controlled trial found subjective effects peaking between 1.5 and 2 hours, involving perceptual modifications and increased ratings of positive mood and activation. The experience is often strong and not always pleasant. In one clinical study, 100% of patients reported feeling safe, yet the session involved psychological distress for some. Users in one comparison rated ayahuasca experiences as stronger, less pleasurable and with more negative side effects than classic psychedelics.

Descriptions from ceremony research include changing perceptions, shaking and feeling vulnerable about 30 minutes after ingestion, sometimes followed by vomiting and then a shift to a more expansive state. A bad trip can feel frightening, but the Alcohol and Drug Foundation states it is generally not life-threatening and the effects pass as the drug wears off.

Sources: Rapid antidepressant effects of the psychedelic ayahuasca in..., Ayahuasca and Dimethyltryptamine Adverse Events and Toxicity..., The Effects of Ayahuasca on Psychological Disorders: A Systematic..., Ayahuasca: Psychological and Physiologic Effects, Pharmacology and...

How long does ayahuasca take to wear off, and how long does it stay in your system?

Acute effects typically begin 30 to 60 minutes after drinking, peak between 60 and 120 minutes, and resolve by about 4 hours, with some sources describing a 4 to 6 hour window. Blood levels of the compounds return to baseline within 24 hours.

The time to peak DMT plasma concentration after ayahuasca is 1.5 hours and matches the peak of subjective effects. After the acute phase, people may feel tired or have muscle and body aches because of the intensity of the experience, according to the Alcohol and Drug Foundation, which notes psychedelics usually do not cause a come down. Detection windows for ayahuasca compounds on standard drug tests are not covered in the research cited here, so confirm any testing question with the testing laboratory or an employer's medical review officer.

Sources: Sub-acute and long-term effects of ayahuasca on affect and cognitive..., Ayahuasca: pharmacology, safety, and therapeutic effects - PMC, Ayahuasca - Alcohol and Drug Foundation

What happens to your body when you take ayahuasca?

Ayahuasca produces moderate, transient increases in blood pressure, heart rate and pupil diameter, and raises levels of prolactin, growth hormone and cortisol, probably via the 5-HT2A receptor. Peak harmine blood levels occur at 50 minutes and peak DMT levels at 75 minutes after consumption.

Ceremonies are held at night, last a few hours longer than the drug effects, and are led by a provider who supplies the brew and support, according to one research description. A review of acute administration in healthy volunteers concluded there is an acceptable safety profile with a narrow safety margin, and that ayahuasca should be avoided by people with certain pre-existing mental conditions and by pregnant women.

Sources: Ayahuasca: pharmacology, safety, and therapeutic effects - PMC, Ayahuasca: A review of historical, pharmacological, and therapeutic..., Ayahuasca: An ancient sacrament for treatment of contemporary..., Ayahuasca and Dimethyltryptamine Adverse Events and Toxicity...

Why do you throw up on ayahuasca?

Vomiting is caused by the brew's physical effects and is so common it is expected. Ayahuasca frequently causes nausea, vomiting and diarrhea, collectively known as purging or la purga, which indigenous cultures view as cleansing and normal. In one retrospective study of 614 church members, 96.74% vomited and 91.53% experienced nausea. In traditional framings, vomiting is considered part of a purging process rather than a side effect. The research cited here offers no settled pharmacological explanation of the vomiting mechanism, so treat any single-cause explanation from marketing with caution.

Sources: Ayahuasca: An ancient sacrament for treatment of contemporary..., Adverse effects of ayahuasca: Results from the Global Ayahuasca..., Rapid antidepressant effects of the psychedelic ayahuasca in...

Does ayahuasca change your brain?

Brain imaging studies have found structural differences in long-term users, but they cannot show what an individual's brain will do. Long-term imaging in people who used ayahuasca at least 50 times in two years showed increased thickness in the anterior cingulate cortex and thinning in the posterior cingulate cortex. UC Berkeley's psychedelic center states long-term use may enhance neuroplasticity and structurally change parts of the default mode network, and that long-term use has been shown to produce changes in brain chemistry and personality. These are cross-sectional comparisons, not measurements of change in the same person over time.

The most consistent finding across five of six prospective personality studies was a long-term reduction in neuroticism or harm avoidance. One study found improvements in convergent thinking sustained for 4 weeks after consumption.

Sources: Ayahuasca: An ancient sacrament for treatment of contemporary..., Ayahuasca Therapy Information- UC Berkeley BCSP, Ayahuasca: A review of historical, pharmacological, and therapeutic...

Can ayahuasca cause mental illness?

Case reports document psychiatric crises after ayahuasca, but they are individual cases and cannot give a rate. A 42-year-old man with no significant psychiatric history developed substance-induced psychosis after repeated DMT use combined with long-term cannabis use, and symptoms resolved after three weeks of treatment. A 30-year-old man with bipolar disorder had a manic episode after a four-day ritual and was discharged after a month of psychiatric treatment. A systematic review of eight case studies found psychotic symptoms only in people with current or prior psychiatric symptoms, family history of psychosis, or concurrent use of other drugs.

A prospective study of 40 ceremony participants found 7 with extremely challenging psychological reactions, 4 of whom had prior psychiatric diagnoses. Under DSM 5, substance-induced mental disorders are diagnosed when characteristic symptoms appear during or up to one month after consumption and no data justify a primary disorder. Any concern about symptoms you are experiencing now belongs with a licensed clinician, not with an article.

Sources: Ayahuasca and Dimethyltryptamine Adverse Events and Toxicity..., Ayahuasca: Psychological and Physiologic Effects, Pharmacology and..., Switch to mania after ayahuasca consumption in a man with bipolar..., Adverse effects of ayahuasca: Results from the Global Ayahuasca...

Why might someone feel depression after ayahuasca?

Depression is one of the reported negative after-effects, though most reported mental health effects were brief. In the Global Ayahuasca Survey, the most frequent adverse mental health effect was hearing or seeing things others do not, at 28.5%, and for most participants reporting seven of the 10 mental health effects, duration was under one week. Only 4.4% reported severe visual distortions, the only severe effect above 4%.

Two specific findings on mood: among survey respondents already diagnosed with anxiety or depression, 2.7% and 4.5% respectively considered their symptoms to have worsened due to ayahuasca. Separately, one six-month observational study found depression and stress symptoms were statistically higher at 6 months than at 7 days, suggesting a temporary attenuation of early gains. Conversely, small depression trials, an open-label trial and a double-blind randomized placebo-controlled trial, report symptom reductions lasting days to weeks; these are small studies, not proof of benefit for any individual. A licensed clinician should evaluate persistent low mood.

Sources: Adverse effects of ayahuasca: Results from the Global Ayahuasca..., Ayahuasca and Dimethyltryptamine Adverse Events and Toxicity..., Long-term mental health and wellbeing outcomes associated with..., Ayahuasca: pharmacology, safety, and therapeutic effects - PMC

Who should not do ayahuasca?

The Alcohol and Drug Foundation states ayahuasca can trigger or worsen conditions such as anxiety, schizophrenia or psychosis, and that anyone with a history of these issues, a mental health condition, or a family history of these conditions should avoid it. A safety review likewise concludes ayahuasca should be avoided by those with certain pre-existing mental conditions and pregnant women. In the survey, an anxiety disorder significantly increased the odds of adverse mental health effects, and having a physical health condition raised the odds of both physical and mental adverse effects.

• Combining ayahuasca with medications that raise serotonin levels risks serotonin syndrome, which can range from mild to life-threatening, per Cleveland Clinic.
• Combining with MDMA, mescaline, 2C compounds, bath salts, LSD, 5-MeO-DMT or psilocybin is high risk because fatalities have been reported with harmala alkaloids in recreational settings.
• Survey respondents using ayahuasca in religious or traditional settings reported fewer adverse mental health effects than those in non-religious or non-supervised contexts.
• Bring your full medication and diagnosis history to a licensed clinician and to the retreat's screening process before deciding. See our risks and screening page for the questions to ask.

Sources: Ayahuasca - Alcohol and Drug Foundation, Ayahuasca and Dimethyltryptamine Adverse Events and Toxicity..., Adverse effects of ayahuasca: Results from the Global Ayahuasca..., Ayahuasca: What It Is and Risks

What are the pros and cons of ayahuasca, according to the cited sources?

Sources: Ayahuasca: pharmacology, safety, and therapeutic effects - PMC, Sub-acute and long-term effects of ayahuasca on affect and cognitive..., Adverse effects of ayahuasca: Results from the Global Ayahuasca..., Ayahuasca: Psychological and Physiologic Effects, Pharmacology and...

What has the survey actually documented?

The Global Ayahuasca Survey asked about mental, emotional and perceptual changes in subsequent weeks or months. Among 7,839 respondents to these questions, 55.9% reported such changes or difficulties. Those reporting changes were also asked whether they needed professional support to cope. These figures describe that survey's respondents and questions.

They are not a rate of newly diagnosed psychiatric illness. Nor do they show that each experience lasted for months. The survey collected retrospective reports rather than following a randomly selected group through the same preparation and setting. Preserve those distinctions when reading a striking percentage.

Does a positive interpretation establish that a difficulty is harmless?

A person can attach personal meaning to an experience while also needing help with its effects. Interpretation and present functioning deserve separate descriptions. Calling something an insight does not assess its medical significance.

A later reanalysis of the same survey explored associations with mental-health measures and reported relevant differences by prior anxiety or depression history. It adds an analysis of existing data, rather than a new independent group. Statistical relationships cannot tell an individual to regard continuing distress as beneficial or to postpone an assessment.

What distinguishes reflection support from clinical assessment?

Reflection might involve discussing meaning, reviewing notes or deciding what remains uncertain. Clinical assessment asks a different question: what is happening to the person's health, and what care is appropriate? A conversation's warmth or familiarity does not determine its professional scope.

The small prospective first-time-user case series documented intense acute reactions and followed selected participants afterward. Its limited observations cannot establish a recovery timetable. An appropriate support arrangement therefore needs a clear route to qualified care when the concern exceeds reflection. No integration exercise in this guide is presented as a validated treatment.

What information is useful when describing a concern?

Use ordinary observations: what changed, when it started, how often it occurs and what it interrupts. Distinguish a recollection of the session from what is occurring now. Include relevant exposures and existing care in a discussion with the professional assessing you.

For example, "I have been unable to complete my usual work tasks" is clearer than a broad spiritual explanation of why the change occurred. You do not have to settle its meaning before seeking help. This is a communication suggestion, not a diagnostic questionnaire or a reason to wait until a particular day.

How can you read after-effects claims in retreat marketing?

Retreat marketing sometimes describes after-effects selectively: emphasizing reported improvements, framing difficulties as meaningful, or citing the survey as though it certified a typical outcome. A few reading habits keep those claims in proportion.

First, separate the speaker's interpretation from the survey's data. A testimonial that describes feeling clearer for months is one person's recollection, not a measured outcome. Second, watch for time compression. The survey asked about changes in subsequent weeks or months as a single coarse window; it did not establish that each change persisted for months or resolved on a fixed schedule. Any claim about a standard recovery timeline goes beyond the source. Third, notice whether negative reports appear. The same literature that describes improvements also documents difficulties and perceived need for professional support; an account that presents only favorable outcomes is incomplete.

Finally, treat the phrase it was hard but worth it as a personal meaning, not a safety assessment. A person can genuinely value an experience and still have needed qualified help during or after it. If marketing language discourages seeking assessment for persistent symptoms, that is a property of the marketing, not of the evidence.

Concerning, persistent or worsening changes belong with an appropriately qualified professional. Bring the description of what changed, when it began and what it interrupts; you do not need to settle the experience's meaning before seeking that conversation.