Ayahuasca and Anxiety: What the Research Shows

The honest answer is "promising but unproven, and not without risk." Some early studies and large surveys link ayahuasca with lower anxiety over time, especially in people who already have an anxiety or mood disorder. But the same brew can also provoke intense fear, panic, and distress during a ceremony, and in a minority of people that distress lingers afterward. Ayahuasca is not an approved treatment for anxiety, and nothing here is a reason to change your care.

Does ayahuasca help with anxiety?

There is a real signal in the research that ayahuasca is associated with lower anxiety, but the evidence is early and most of it cannot prove cause and effect.

Ayahuasca is, first, an indigenous Amazonian medicine, used for generations across many distinct lineages and cultural contexts long before any Western trial existed. The research lens here is only one way of understanding it; if you are new to the subject, our pillar on what ayahuasca is sets out those origins and the ethics of access and reciprocity that any honest account has to keep in view.

The strongest single study is a small randomised, placebo-controlled trial of ayahuasca in 29 people with treatment-resistant depression. It found a rapid antidepressant effect one day after a single dose compared with placebo.^[1] That is encouraging, but it was a depression trial, not an anxiety trial, the sample was tiny, and the authors themselves called the participant number "modest" and warned against over-generalising.^[1]

Most of what we know about anxiety specifically comes from observational research: surveys and before-and-after studies of people who already chose to drink ayahuasca. A longitudinal study of first-time users reported reductions in stress and improvements in wellbeing.^[2] A larger naturalistic study found that ayahuasca use was associated with lasting drops in depression, anxiety and stress, with the biggest improvements in people who came in with a diagnosed anxiety or depressive disorder.^[3] A systematic review of 43 studies noted that regular users tend to score lower on anxiety than non-users, and one very large survey found a majority of respondents reported their anxiety improved to some degree.^[4]

The other side: ayahuasca can cause anxiety

This is the part that gets understated, and a first-timer deserves to hear it plainly. Ayahuasca can acutely provoke intense anxiety and fear during a ceremony, and for some people that distress does not vanish when the effects wear off.

In the depression trial above, transient anxiety during dosing was common, reported by about half the ayahuasca group (and, notably, even more of the placebo group), alongside nausea and vomiting.^[1] Acute fear, paranoia, disorientation and restlessness are well-documented short-term effects.

The largest dataset on harms is the Global Ayahuasca Survey, with thousands of respondents. Most people reported at least one adverse mental-health effect in the weeks or months afterward, including things like feeling anxious or feeling disconnected. Crucially, around 88% framed these as part of a positive process of growth or integration rather than as pure harm, and for most people the effects lasted less than a week.^[5] But this is not negligible: roughly 12% sought professional support for those after-effects.^[5]

Around 12% of respondents sought professional support for mental-health effects after drinking, even though most saw those effects as part of growth.

The single biggest predictor of difficult mental-health after-effects was a prior history of anxiety or depression, and the risk was higher outside supervised or traditional settings.^[5][6] There are also published case reports of people with generalised anxiety disorder experiencing severe anxiety, panic and hopelessness that persisted for weeks after a ceremony before resolving.^[4] If you live with anxiety, this is the paradox to sit with: you may be among those most likely to benefit, and among those most likely to have a hard time.

Why the same brew can calm or terrify

Two factors explain the mixed picture: pharmacology and context.

Pharmacologically, ayahuasca combines DMT with MAO-inhibiting compounds from the Banisteriopsis caapi vine, producing hours of altered perception and strong emotion. That intensity is a double-edged sword: it can surface material that feels healing, or it can flood someone with fear. If you are taking an antidepressant or other medication, the MAO-inhibiting action also raises serious interaction concerns, which is its own subject in our explainer on ayahuasca and antidepressants.

Context, what researchers call "set and setting," matters enormously. Surveys consistently find that difficult after-effects are more common when people drink in unsupervised or non-traditional settings, and that strong fear during a ceremony often reflects a lack of psychological safety or support.^[5][6] Preparation, screening and skilled facilitation appear to reduce risk, which is why choosing a setting carefully matters so much. Our guides on ayahuasca safety and contraindications and how to choose a retreat safely go deeper, and if you are weighing it up, what an ayahuasca ceremony feels like addresses the experience most newcomers are anxious about.

What the evidence does and does not support

To keep the honest line clear:

• Well-evidenced: Ayahuasca reliably causes acute, sometimes intense, anxiety, fear and physical effects during a session. This is consistent across trials and surveys.^[1][5]
• Preliminary: A signal that ayahuasca is associated with reduced anxiety over time, strongest in people with existing anxiety or mood disorders, mostly from observational data.^[3][4]
• Not established: That ayahuasca treats anxiety disorders. There are no adequately powered, controlled clinical trials for anxiety, and regulators have not approved it for any condition.^[4]
• Unknown for many: Long-term outcomes, who is most at risk of lasting harm, and how it interacts with specific psychiatric conditions and medications.

If you are researching this for anxiety

A few grounded points for a newcomer. First, anxiety disorders have effective, evidence-based treatments now, including talking therapies and medication, and nothing about the ayahuasca research is a reason to delay or abandon care that is working. Second, if you do explore ayahuasca, the research suggests that who you do it with and how you prepare may matter as much as the brew itself; thorough screening that takes your mental-health history seriously is a feature, not a hassle. The questions to ask an ayahuasca retreat can help you tell rigorous operators from careless ones, and integration is where any benefit is most likely to stick or slip.

The most honest summary the science currently supports: ayahuasca is an intense experience that can both ease and inflame anxiety, the early evidence is interesting but thin, and it is not a treatment you can count on. Approach it as something to understand carefully, not as a cure to chase.