Ayahuasca and anxiolytics: contraindications and precautions

Key points

• Anxiolytics are not one single category. Benzodiazepines, Z-drugs, buspirone, pregabalin, gabapentin, hydroxyzine and medicines used for panic attacks do not raise the same questions.
• The main issue is not only a pharmacological interaction. The person's current emotional stability, sleep, dependence risk and withdrawal risk matter just as much.
• A participant should never hide an occasional medicine. A tablet taken only in case of crisis can be the most important information for the screening team.
• Stopping a benzodiazepine or sleeping pill suddenly in order to attend a ceremony can be dangerous. A retreat center must never ask for this.
• A recent anxiety crisis, severe insomnia, a medication change or ongoing withdrawal are strong reasons to postpone, even when the medicine itself is not formally prohibited.

1. Why anxiolytics require a different approach

When people speak about ayahuasca and medications, the conversation often focuses on antidepressants, MAOIs and serotonin syndrome. This is understandable because ayahuasca contains harmala alkaloids with reversible monoamine oxidase inhibiting activity, and because many antidepressants act directly on serotonin. Anxiolytics raise a different set of questions.

The risk is sometimes pharmacological, sometimes psychological, sometimes practical. A person may be taking a benzodiazepine every night, a sleeping pill twice a week, hydroxyzine for panic, pregabalin for anxiety, or an emergency tablet kept in a bag “just in case”. These situations are not equivalent, but all of them matter during screening.

A serious ayahuasca retreat therefore should not use a simplistic rule such as “anxiolytics are always forbidden” or “anxiolytics are never a problem”. The center should collect precise information, evaluate the participant's current stability, and ask for medical advice when a decision involves stopping, tapering, switching or restarting treatment.

2. Main families to identify

The word anxiolytic often groups together medicines with very different mechanisms. For screening, the first task is to name the medicine exactly, not only to say “I take something for anxiety”.

3. Benzodiazepines: the most sensitive point

Benzodiazepines are often prescribed for anxiety, panic attacks, insomnia, muscle tension or acute distress. They can be useful in specific medical contexts, but long-term or repeated use may lead to tolerance and dependence. This is why they require particular caution before any intense psychoactive experience.

The first danger is not necessarily that a benzodiazepine will create a dramatic interaction with ayahuasca. The more frequent issue is that the participant may try to stop it abruptly in order to be accepted. Sudden interruption can trigger severe rebound anxiety, insomnia, agitation, tremors and, in some cases, dangerous withdrawal symptoms. A retreat center should never invite someone to “just stop for a few days”.

The second danger is that the medicine may be masking an unstable state. If a person needs a benzodiazepine every evening to sleep, or keeps alprazolam available because panic attacks still happen, the question is not only “is the pill compatible?” The question is “is this person stable enough to go through a demanding ceremony safely?”

The third danger is sedation. Ayahuasca ceremonies often include nausea, vomiting, intense emotions, walking in the dark, changing body position, receiving verbal instructions and asking for help. A sedated, confused or sleep-deprived participant is harder to support safely.

4. Rebound anxiety and insomnia are real safety issues

Some participants believe that the safest choice is to arrive without any anxiolytic in the body. This idea can be misleading. A person who stops a medicine abruptly may arrive with worse anxiety, poor sleep and increased sensitivity. The apparent “clean” state may in fact be less safe than a stable, transparent situation discussed with medical professionals in advance.

For benzodiazepines and sleeping pills, rebound symptoms can appear when the nervous system has become used to the medicine. Anxiety may return stronger, sleep may collapse, and the person may become emotionally fragile before the retreat even starts. This matters because ayahuasca can amplify internal states rather than mechanically calm them.

A serious retreat should therefore ask not only “what do you take?” but also “what happens when you do not take it?” The answer is often more informative than the medicine name alone.

5. Sedation, vomiting and physical safety

Many medicines used for anxiety or sleep can cause drowsiness, slowed reaction time, dizziness or confusion. In everyday life, the person may barely notice these effects. During a ceremony, they become more important.

Vomiting is common with ayahuasca. A sedated person may have more difficulty sitting up, signaling distress or responding clearly. If the ceremony takes place at night, fatigue and disorientation can add another layer of risk. This is why the screening team must know about sedative medicines even when they are taken “only to sleep”.

Alcohol, opioids, recreational sedatives and some antihistamines can intensify sedation. The combination of several depressant substances is especially concerning and should be discussed medically before any retreat is considered.

6. Buspirone, pregabalin and hydroxyzine: avoid shortcuts

Not every anxiolytic is a benzodiazepine. This is precisely why the screening form must be detailed. Each medicine family has its own questions, and the participant's broader context often matters more than a yes/no rule.

Buspirone

Buspirone is sometimes used for generalized anxiety. It is not a benzodiazepine and does not have the same dependence profile. However, this does not mean that it can simply be ignored. The reason for prescription, associated antidepressants, dose, stability and medical history all need to be understood. Because buspirone has serotonergic relevance, the prescribing clinician should be involved before any decision.

Pregabalin and gabapentin

Pregabalin and gabapentin may be prescribed for anxiety, neuropathic pain, epilepsy or other conditions. They can cause sedation and dizziness, and some people experience withdrawal symptoms when they stop. The presence of these medicines should lead to careful questions: why is it prescribed, at what dose, for how long, and what happens if a dose is missed?

Hydroxyzine

Hydroxyzine is an antihistamine also used for anxiety or sleep. Some people see it as harmless because it is not a benzodiazepine. Yet it can be sedating and may interact with the practical demands of ceremony safety. It should be declared like any other medication.

7. The real indicator: current emotional autonomy

A medicine list is necessary, but it is not enough. The retreat team also needs to understand the person's current emotional autonomy. Can they sleep without emergency medication? Have panic attacks been frequent recently? Has the dose changed in the last few weeks? Is the person currently tapering? Is the retreat being used as a last hope during a crisis?

These questions may sound personal, but they are central to safety. Ayahuasca is not a neutral wellness activity. It can bring intense memories, fear, bodily sensations and psychological material to the surface. A person who is already in acute anxiety, severe insomnia or withdrawal may not have enough margin to integrate the experience safely.

Postponing is not a punishment. In many cases, it is the most respectful decision. It allows the person to stabilize, speak with their prescriber and return later with clearer conditions.

8. Before, during and after: three different moments

Before the retreat

The screening phase should collect the exact medicine name, dose, frequency, last dose, last change, reason for prescription and prescriber's contact if the participant agrees. The team should ask about sleep, panic attacks, alcohol use, other sedatives and recent crises. If there is uncertainty, the center should postpone rather than improvise.

During the ceremony

The facilitation team must know whether a participant may be more sedated, more anxious or more likely to panic. This does not mean disclosing private details to the group. It means that the responsible team has enough information to supervise the person safely, recognize warning signs and avoid inappropriate advice.

After the retreat

After an intense experience, anxiety or insomnia can fluctuate. A participant should not change medication because a ceremony “felt healing”. Any adjustment after the retreat belongs with the prescribing professional. Integration should include rest, grounded support and medical continuity when treatment is involved.

9. Associations to look for systematically

• Alcohol: increases sedation and can complicate anxiety, sleep, dehydration and judgment.
• Opioids and strong painkillers: can add respiratory depression and sedation concerns.
• Antidepressants: may introduce serotonergic or psychiatric questions that need separate assessment.
• Antihistamines and cold medicines: some products contain sedating antihistamines, decongestants or dextromethorphan.
• Recreational substances: stimulants, cannabis, dissociatives and sedatives may change risk and must be declared.
• Recent medication changes: starting, stopping, increasing or tapering a medicine shortly before a retreat should trigger caution.

10. What the participant should declare

A useful declaration is precise. “I take something for stress” is not enough for a safety decision.

• The exact commercial name and, if known, the active ingredient.
• The dose and form: tablet, drops, capsule, extended release.
• The frequency: daily, weekly, only during panic, only for sleep.
• The date and time of the last dose.
• The date of the last dose change, start, stop or taper.
• The reason for prescription: anxiety, panic, insomnia, trauma symptoms, pain, epilepsy or another condition.
• What happens when a dose is missed or delayed.
• All alcohol, cannabis, sleep products, herbal sedatives and over-the-counter medicines.

11. What a serious center should do

12. Questions to ask the retreat center

• Do you ask specifically about benzodiazepines, sleeping pills and as-needed panic medication?
• Who reviews medical information before confirmation?
• Do you ever ask participants to stop medication by themselves? A safe answer should be no.
• What happens if someone is currently tapering or recently changed dose?
• Can you postpone participation without pressure or cancellation drama when safety is unclear?
• How do you protect confidentiality while keeping the facilitation team informed?
• What follow-up exists if anxiety or insomnia increases after the retreat?

13. For facilitators: when to say no or not now

The following situations should lead to postponement or medical review before any confirmation:

• The participant is currently withdrawing from a benzodiazepine or sleeping pill.
• There was a recent severe panic attack, crisis call, emergency visit or major destabilization.
• Sleep is severely impaired and controlled only by medication.
• The participant recently started, stopped or changed psychiatric medication.
• The person wants to use ayahuasca to replace treatment or avoid medical care.
• The participant refuses to disclose the medicine name or dose.
• Several sedating substances are used together.

In these cases, the safest message is not “you are excluded forever”. It is “not now, not under these conditions, and not without medical clarity”.

14. Preparation without stopping medication

Some people can prepare meaningfully without changing medication. Preparation may include sleep hygiene, reducing alcohol if medically appropriate, organizing therapy support, discussing the retreat with the prescriber, stabilizing daily routines, and clarifying intentions. None of this requires abrupt self-directed withdrawal.

If the prescriber decides that a taper or change is appropriate, it should happen far enough in advance to observe stability, not at the last minute to satisfy a retreat calendar. The retreat date should adapt to health, not the opposite.

15. Quick checklist for participant and center

• Exact medicine name, dose and frequency collected.
• Last dose and last medication change documented.
• Sleep, panic attacks and current anxiety level discussed honestly.
• Alcohol, cannabis, antihistamines, painkillers and other sedatives declared.
• No self-directed stopping, tapering or substitution requested by the center.
• Medical advice requested when the decision involves treatment changes.
• Clear postponement rule for withdrawal, severe insomnia or recent crisis.
• Post-retreat continuity planned when anxiety treatment is ongoing.

16. FAQ

Sources and references

• ICEERS, Ayahuasca Safety Profile.
• Kelman et al., Drug-drug interactions between psychiatric medications and MDMA or psilocybin: a systematic review, PMC.
• U.S. Food and Drug Administration, Boxed warning update for benzodiazepines.
• MedlinePlus, Serotonin syndrome.