Therapeutic procedures in Takiwasi invite further research on the adequate use of visionary substances, such as ayahuasca, in the treatment of dependencies. The aim is to expand neuropharmacological analysis to the psychoclinical field, and especially to pay particular attention to the symbolic operating dimension or religious dimension. It is becoming necessary and urgent to break the modern taboo that prevents the factor of spirituality in investigation. Can we take the risk of the subjective experience of individuals by having the audacity to assume it as real in its entirety? This is the way the wise men have explored many traditions and invite them to follow in order to get out of the stifless reductions. This involves making a qualitative leap that consists of admitting the existence of the "world-other" (or at least accepting to assume the assumption) and thus opening up to a transcendent dimension, specific to each and to some extent similar to all. Many testimonies may already be used as a basis for this type of study (Calvo, 1995; Plotkin, 1993).