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For inquiries regarding the utilization of ethnobotanicals, or in case you are experiencing an adverse situation or difficulty integrating and experience, please read this page. For inquiries regarding legal support , please read this page.

  • We don’t offer sessions of ayahuasca or iboga.
  • We don’t recommend centers or people who perform/do sessions.

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    Carrer de Sepúlveda, 65 , Oficina 2, 08015 Barcelona España +34 931 88 20 99
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    Noticias NEWS

    Medicine or Poison: The Paradox of Psychoactive Plants

    In a world that oscillates between spiritual veneration and criminalization, Jerónimo Mazarrasa — Program Director at ICEERS —...

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    EVENTS NEWS

    La Seta Crítica III: Conscious Encounters and Community in the Mountains of Madrid

    On the weekend of May 24 and 25, 2025, the third edition of La Seta Crítica was held in the Sierra de Guadarrama, in Madrid. This...

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    Noticias NEWS

    The Impact of Cannabinoids on Social Cognition: Results of a Study in Natural Context

    How does the consumption of cannabinoids affect our ability to understand and relate to others? Is our emotional perception altered?...

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    NEWS

    El Faro by ICEERS: A Guiding Light for Challenging Processes

    With the increase in practices with psychoactive plants, the number of people facing difficult experiences is also growing. For more...

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    Latest posts

    TEDx Dalt Vila Jerónimo Mazarrasa medicina veneno

    Medicine or Poison: The Paradox of Psychoactive Plants

    In a world that oscillates between spiritual veneration and criminalization, Jerónimo Mazarrasa — Program Director at ICEERS — has spent two decades exploring a question as simple as it is unsettling: “How can the same plant be medicine for one culture and poison for another?”

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    ICEERS in the Press

    2025 ICEERS Die Bedeutung von Setting und Mindset bei der Anwendung von Ayahuasca It Boltwise, 4 May 2025 Setting and Mindset Shape Ayahuasca’s Mental Health

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    natural psychoactive drugs (NPDs) Amanita muscaria fly agaric mushroom ICEERS PsychePlants

    The Influence of Natural Psychoactive Drugs on People’s Lives

    The term “natural psychoactive drugs” (NPDs) comprises a great variety of animals, plants, cacti, and fungi, traditionally used in ritualistic contexts all over the world, whose consumption has increased dramatically in the last few decades. In order to study the patterns of use, the desired effects and the mental health status of individuals who make use of them, ICEERS conducted a detailed research through an online questionnaire that was answered by 564 NPD users from 52 different countries. The results have recently been published in the journal Drugs: Education, Prevention and Policy.

    ayahuasca grief candle iowaska ICEERS mourning death

    Grief During Uncertain Times and the Future of Therapeutic Uses of Ayahuasca

    According to ICEERS associate researcher Débora González, grief is a form of love – it is the price paid for love. As we let go, of a person or of something held near and dear to our hearts, we grieve. It’s a natural and necessary process, not only for adapting to stressful times but also for personal growth and enrichment. And, while death may be the end of life from a biological perspective, what we’ve lost continues to exist after death, through our memories, thoughts, and even in our genes.

    Amazon COVID-19 crisis pandemic ICEERS

    Ways to Support Amazonian Communities During the Pandemic

    The question of how to offer help to indigenous and other Amazonian communities who don’t have access to medical and economic supports that may be available to those in North America and Europe is answered by two words: solidarity and generosity.

    Tabernanthe iboga ibogaine effects tree ICEERS

    The Subjective Effects of Ibogaine and Healthy Living

    What are the subjective effects of ibogaine that can lead to healthier habits? A new study conducted by ICEERS’s research team contributes to a better understanding of the role ibogaine plays in psychotherapeutic and other processes.

    COVID-19 effects study ICEERS science

    Study Examines Effects of the COVID-19 Crisis on Individuals

    Starting this week, the Science and Innovation area of the International Center for Ethnobotanical Education, Research, and Service (ICEERS) will conduct a scientific study on the psychological impact of the COVID-19 crisis and the effects that confinement measures have on the population.

    ayahuasca iowaska Peru COVID-19 ICEERS study

    Is the Ayahuasca Community Ready for the Stress of COVID-19?

    Is the ayahuasca community prepared to face the stressful situation resulting from the COVID-19 crisis? José Carlos Bouso, scientific director of ICEERS, reflects on the issue based on a study they conducted on ayahuasca and public health.

    Alex Polari AYA2019 ayahuasca spirituality iowaska ICEERS World Conference

    Ayahuasca, Spirituality and Community Life

    Alex Polari, a respected leader within the Santo Daime, began his talk at the 2019 World Ayahuasca Conference by commenting on the importance of the event in relation to the study of consciousness and the human spirituality.

    Ayahuasca healing collective trauma UMIYAC ICEERS AYA2019 World Ayahuasca Conference Girona iowaska

    Ayahuasca and Healing Collective Trauma

    At the 2019 World Ayahuasca Conference, the Union of Indigenous Yagé Medics of the Colombian Amazon (UMIYAC) presented a panel on the topic of what yagé and spirituality means to the Amazonian indigenous people of

    ayahuasca grief iowaska river death mourning ICEERS

    Ayahuasca Opens Up New Possibilities for Grief Therapy

    Can ayahusca help reduce the symptoms of grief? According to a study recently published in the journal Psychopharmacology, ayahuasca – also known as the “vine of the soul” within the Peruvian indigenous Shipibo healing system – can help people who are grieving the loss of a loved one, significantly reducing symptoms, such as anxiety and depression. Benefits lasted for up to a year following the retreat.

    Heart of the World Amazonian Manari Sapara AYA2019 World Ayahuasca Conference iowaska ICEERS

    Protecting the Heart of the World

    The Amazon River, in the heart of the world, is the largest river on the planet, with a flow greater than that of the next 6 largest rivers in the world combined. This enormous flow