Gonzales v. O Centro Espírita Beneficente União do Vegetal was a 2006 U.S. Supreme Court case whose decisive outcome was affirmation of the Brazil-based União do Vegetal church’s right to use ayahuasca as a sacrament. In the book’s account, the ruling stands at the intersection of religious practice and the legal control of psychoactive substances: it recognized a protected religious use without turning that use into a general authorization for psychedelic drugs. Its importance lies both in the concrete right affirmed for the church and in the precedent’s place within a wider effort to make direct spiritual experience legally and socially legible.

Background: A Sacrament and a Controlled Substance

Ayahuasca is a psychedelic tea prepared from plants native to the Amazon basin. Typically, its ingredients include Banisteriopsis caapi and Psychotria viridis, also known as chacruna. Chacruna contains DMT, but digestive enzymes deactivate the compound unless it is taken with a monoamine oxidase inhibitor such as Banisteriopsis. The preparation is used sacramentally by Indigenous peoples of South America; in this case, the relevant religious community was the Brazil-based União do Vegetal church.

That combination of sacramental meaning and psychoactive effect is central to understanding why the case mattered. The issue was not simply whether a substance could produce an altered state. For the church, ayahuasca belonged to religious practice. The Supreme Court’s decision, as described in the book, affirmed the church’s right to use it in that capacity. This framing distinguishes the case from a general debate about recreational access: the right identified in the account is specific to the church’s religious use.

The 2006 Ruling

The book identifies Gonzales v. O Centro Espírita Beneficente União do Vegetal as one of two watershed events of 2006. Its summary of the case is concise but clear about the result: the U.S. Supreme Court affirmed the right of the Brazil-based União do Vegetal church to use ayahuasca as a sacrament. The ruling therefore made a religious claim consequential in the legal sphere, recognizing that the tea’s role within a religious community could not be reduced to its pharmacological properties alone.

The significance of the decision is also bounded by what the account actually establishes. It affirms the church’s sacramental use; it does not describe a blanket change in the legal status of ayahuasca for everyone, nor does it present the ruling as a general legalization of psychedelics. That distinction matters. The case brought religious freedom into direct contact with drug control, but the outcome recorded here protects a particular religious practice rather than removing all restrictions on a psychoactive substance.

The Council on Spiritual Practices and the Wider Revival

The Council on Spiritual Practices (CSP), a nonprofit established by Bob Jesse in 1993, supported the suit that led to the 2006 decision. Its stated purpose was to make direct experience of the sacred more available to more people. The organization also helped organize and fund the first experiments in psychedelic research at Johns Hopkins, linking its religious-freedom work to a broader effort to reopen serious inquiry into psychedelic experience.

Those activities were related, but not identical. The church’s sacramental practice was a religious matter; the Johns Hopkins experiments were research. Together, however, they show how the renewed public consideration of psychedelics proceeded through distinct institutions and arguments: a church sought recognition for its ritual use, while researchers pursued controlled study. CSP’s involvement in both placed it at a meeting point between spiritual practice and scientific investigation without making the two interchangeable.

Historical Significance

The case carries added weight against the history of efforts to suppress psychoactive religious practice. The book recounts how Spanish authorities sought to crush Indigenous mushroom ceremonies after the conquest, treating them as a challenge to church authority. That history concerns mushrooms rather than ayahuasca, and the practices should not be conflated. It nevertheless provides a broader historical contrast: religious uses of psychoactive plants and fungi have repeatedly encountered institutions attempting to define or limit their legitimacy.

In that longer view, the 2006 decision marks a legal recognition rather than a resolution of every conflict over psychedelic use. The ruling secured the União do Vegetal church’s right to its sacrament, while the surrounding debate over medicine, spirituality, and regulation continued. Its lasting narrative force comes from that limited but consequential reversal: a practice involving a controlled psychoactive tea received affirmation as religious observance, and a long-running question about who may define legitimate access to the sacred entered the Supreme Court.