This page collects the safety considerations that matter most for engaging with plant medicine, drawn from published research, harm reduction organisations, and practitioner experience. It is not comprehensive medical advice.
If you are in crisis or experiencing distress related to a psychedelic experience, contact the Fireside Project support line (US) or your local emergency services.
Medical Contraindications
Ayahuasca has serious, potentially life-threatening interactions with certain medications and conditions. The risks below are real.
Serotonergic Medications (CRITICAL)
The MAOI compounds in ayahuasca can cause serotonin syndrome when combined with serotonergic medications. Serotonin syndrome can be fatal.
Medications that MUST be discontinued before ceremony (with appropriate medical supervision and washout period):
- SSRIs (fluoxetine/Prozac, sertraline/Zoloft, paroxetine/Paxil, citalopram/Celexa, escitalopram/Lexapro)
- SNRIs (venlafaxine/Effexor, duloxetine/Cymbalta)
- MAOIs (phenelzine, tranylcypromine, moclobemide)
- Tricyclic antidepressants
- St. John's Wort
- Tramadol
- Dextromethorphan (found in many cough medicines)
- MDMA
- Lithium
Washout periods vary by medication. Fluoxetine (Prozac) has a particularly long half-life and may require 5-6 weeks. Do not stop psychiatric medication abruptly — work with your prescribing doctor. If a retreat centre does not ask about your medications in detail, this is a red flag.
Cardiovascular Conditions
Ayahuasca can increase heart rate and blood pressure. Individuals with serious heart conditions, uncontrolled hypertension, or a history of stroke should not participate without explicit medical clearance.
Psychiatric Conditions
Individuals with a personal or strong family history of:
- Schizophrenia or schizoaffective disorder
- Psychotic episodes
- Bipolar disorder (particularly Type I)
may be at elevated risk of triggering psychotic episodes or destabilising their condition. This is not a blanket prohibition, but it requires careful consideration with qualified professionals.
Pregnancy
Ayahuasca and most master plants used in dieta have not been studied for safety during pregnancy. Several master plants (including Bobinsana) are traditionally regarded as having contraceptive properties. Avoid during pregnancy, breastfeeding, or when trying to conceive.
How to Vet a Retreat Centre
Not all retreat centres are equal. Some are life-changing in the best sense. Others are negligent, exploitative, or dangerous. Key questions to ask:
- Medical screening: Does the centre require a detailed medical questionnaire? Do they ask about medications, psychiatric history, and heart conditions? If they don't screen, don't go.
- Facilitator-to-participant ratio: During ceremony, is there adequate support? A ratio of 1 facilitator per 4-6 participants is considered good.
- Emergency protocols: What happens if someone has a medical emergency? Is there access to medical care?
- Lineage and training: Who are the healers? What is their training? How long have they been practising? Be wary of centres where the "shaman" completed a brief training programme rather than years of traditional apprenticeship.
- Integration support: Does the centre offer post-ceremony integration support? The days and weeks after ceremony are when the real work happens.
- Consent and boundaries: Does the centre have clear policies on physical contact, sexual boundaries, and consent? Abuse does occur in this space.
- Testimonials and reputation: Look beyond the centre's own website. Check Reddit, Ayahuasca forums, and independent reviews.
Red Flags
- No medical screening or medication questions
- Pressure to participate when you express doubt
- Claims of guaranteed healing or cure
- Sexual contact between facilitators and participants (this is abuse, full stop)
- Administering Toé (Brugmansia) without explicit consent and full disclosure of its effects (scopolamine is a deliriant, not a psychedelic)
- Excessive secrecy about ingredients, dosing, or the healer's background
- No emergency medical plan
Legal Status
Ayahuasca contains DMT, which is a controlled substance in most jurisdictions:
- United Kingdom: DMT is a Class A substance under the Misuse of Drugs Act 1971. Ayahuasca as a "preparation" containing DMT is treated as a Class A drug. No religious exemption exists (R v Aziz [2012]).
- United States: DMT is Schedule I federally. Specific religious exemptions exist for the UDV and Santo Daime churches under RFRA (Gonzales v. O Centro, 2006). Some states have decriminalisation measures.
- Peru: Ayahuasca is legal and recognised as cultural patrimony since 2008.
- Brazil: Legal for religious use (UDV, Santo Daime).
- Netherlands: Ayahuasca was tolerated until a 2019 Supreme Court ruling reversed this position.
This is not legal advice. Laws change and enforcement varies. Verify the current legal status in your jurisdiction before engaging with plant medicine.
Harm Reduction Resources
- Fireside Project — Psychedelic peer support line (US): call or text 62-FIRESIDE
- ICEERS — International Center for Ethnobotanical Education, Research & Service
- Inekawa — Free weekly integration calls
- MAPS — Multidisciplinary Association for Psychedelic Studies