Atmosphere

Features

Atmosphere and feature ratings above are based on Best Retreats research (November 2026). They will be updated if Shamanzon submits its own information.

Shamanzon: An In-Depth Review for Yagé (Ayahuasca) Retreats near Barcelona, Spain

Shamanzon is a Barcelona-based organizer founded by Martín Rey Pereiras (“Alpa Kamaska”) that hosts visiting Colombian taitas for weekend yagé ceremonies at a rented mountain house about 75 minutes from Barcelona, with three-night retreats for up to nine guests from €393 for one night to €990 for three in shared rooms, per its Retreat Guru page. Guests rate it 4.87 from 23 reviews, and its refund terms are lenient. Against that, it publishes no medical questionnaire, contraindications, medical staff or emergency plan while offering kambo and yagé ceremonies in clients’ own homes, it has no website or company, and its location and price details contradict each other.

🎯 At a Glance

• Locations: A mountain house in Catalonia about 1 hour 15 minutes by car from Barcelona, Spain, whose address is sent a week before arrival; the nearest bus station named is Navàs, per its November 2026 event page. The address on its listing is in Barcelona city.
• Approach: Up to three all-night yagé ceremonies led by visiting Colombian taitas, currently Taita Bryann, with sahumerio cleansing, optional rapé and two optional paid kambo sessions. It also sells private ceremonies and a 12-day Huni Kuin trip in Acre, Brazil.
• Suitable For: Adults wanting Colombian-style yagé ceremonies in Europe who screen themselves carefully. Not suitable for people taking antidepressants or with heart or psychiatric conditions.
• Costs: €393 for one night up to €990 for three nights in shared rooms, and €1,888 to €4,222 for private rooms; private ceremonies cost €2,100 to €6,000 for up to six people, per its private ceremony page. The deposit is refundable until a day before and full payment until five days before.
• Overall Assessment: Lenient refunds, small groups and experienced visiting taitas, offset by no published medical safeguards, kambo and in-home ceremonies, no company and contradictory listings. Directory evaluation: C.

💬 What Guests Are Saying

Retreat Guru shows 4.87 from 23 reviews, and 4.82 from 28 on its event pages, covering March 2024 to April 2026, per its Retreat Guru page. The visible reviews are all five stars, praising caring hosts, a safe and well-held space, a warm house with views, good food and grounded taitas, though the averages imply some lower ratings. Two reviews contain only a star rating. No listings were found on BookRetreats, Tripadvisor, AyaAdvisors or Trustpilot. If you have attended, we encourage you to share your experience through our submission form.

🚩 Incident Report

We searched review platforms and English, Spanish and Catalan-language news for reports involving Shamanzon, Martín Rey Pereiras, Mateu Navarro, Taita Bryann, Taita Isaías Muñoz Macanilla, Taita José Antonio Jansasoy, Taita Jairo Palchucán and its Brazil partner, OsolTribe.

• Deaths and serious injuries: None found.
• Sexual misconduct: No allegations found.
• Theft and fraud: None found.
• Legal action: None found.

Taita Bryann publishes no surname, which limits this search.

If you have experienced or witnessed an incident with this center, please report it confidentially.

🔍 Critical Notes

Who runs it. Martín Rey Pereiras says he founded Shamanzon, first drank ayahuasca in 2011, apprenticed with several Colombian taitas and is “emerging as a future Taita”, listing no medical or psychological credentials, per his profile; a BookRetreats profile calls him “Dr. Martin Rey” without explanation. Mateu Navarro, a former 3D designer, facilitates. Visiting taitas have included Taita Isaías Muñoz Macanilla, whose family history differs between Shamanzon’s bio and another host’s, Taita José Antonio Jansasoy with Mama Yolimar, and Taita Jairo Palchucán. Contact is through a Gmail address; no website, social account or Spanish company was found. A separate Barcelona organizer, We Are Avalon, hosts two of the same taitas and carries a Martín Rey profile.

Screening and medical support. Guests get a “pre-ceremony consultation” in person or by WhatsApp, but no medical questionnaire, contraindication list, medical staff or emergency protocol is published, including for kambo. Private ceremonies can be held in a client’s own home for up to six people. No hospital is named; if the house is near Navàs, the regional hospital is in Manresa (our estimate).

Listings. Earlier pages put the house “under 30 minutes by public transport” from Barcelona, one page says the medicine is included while the platform notice says it is not, group limits vary from nine to 16, and package text refers to dates that do not match the events.

Status. Operating, with the next retreat on 19 to 22 November 2026; no 2027 dates are listed.

Legal context. Ayahuasca is not specifically prohibited or authorized in Spain, DMT is controlled and most cases that reach court end in acquittal, per ICEERS. Police have intervened in ceremonies, including an April 2023 raid on an unrelated ceremony in Sant Pol de Mar, Barcelona province, where two people were detained and ayahuasca, bufo and kambo were seized, per the Agencia Tributaria.

🆘 Screening & Mental Health Risks

Yagé and kambo served without published screening, including in private homes, leave guests to judge their own risk. ICEERS notes that ayahuasca’s MAOI component makes it dangerous with SSRIs and other serotonergic drugs and that it is contraindicated for people prone to psychosis. Never stop a psychiatric medication to qualify for a ceremony without your prescriber’s guidance.

🧪 Brew Substance

Yagé served by visiting Colombian taitas in “personalized” doses; the source is not published. Ayahuasca combines the Banisteriopsis caapi vine with a DMT-containing leaf such as chacruna, as Erowid explains.

📍 Location, Setting & Style

• Setting: A house in the hills of inland Catalonia that reviewers describe as warm and peaceful, with views.
• Rooms: Shared bunk rooms and private rooms; guests bring blankets or a sleeping bag and towels, per its event page.
• Style: All-night Colombian yagé vigils with music, organized by a European team.

Practical guidance: Fly to Barcelona (BCN); the house is reached by car or bus, and some dates offer airport pickup at extra cost.

Should You Book?

Possibly, for experienced drinkers who screen themselves. Ask in writing for the house’s address and nearest hospital, the contraindication list, who on site handles a medical emergency, the kambo practitioner’s training and the legal entity you are paying. Read our guide to verifying retreat facilitators.

The Team & Story

Shamanzon has run retreats through Retreat Guru since at least 2023, mostly with visiting Colombian taitas, and partners with OsolTribe for its Brazil trips. We did not independently verify anyone’s training.

Prep & Integration Tips

Before you go: Disclose every medication and condition in writing and plan any change with your own doctor. After you return: Arrange support from a qualified therapist at home. Our guide on how to research ayahuasca incidents can help you check any center.

Pros & Cons

Book Your Ceremony

Dates are listed on Retreat Guru. Best Retreats does not take bookings; learn more about our mission.

Last reviewed November 2026.

This article is for informational purposes only and is not medical advice. Consult a qualified medical professional.