This book, The Internationalization of Ayahuasca, represents a remarkable synthesis of perspectives, analyses, data sources, and conversations on the subject of the use of ayahuasca, a “hallucinogenic” substance used traditionally in South America. As described by the book’s editors, the volume — an edited collection comprised of more than two dozen chapters — is the result of an international conference held in Heidelberg, Germany in 2008. The conference promoted a mutual dialogue among diverse ayahuasca researchers and users from Western societies and indigenous groups, spiritual and religious leaders, and activists. This volume offers a richly multidisciplinary discussion of ayahuasca, bringing together multiple cultural, health, and legal aspects. This book will be of great interest to scholars and students of ritual healing practices and traditions and the politics, contestations, and plurality of voices and perspectives surrounding their global spread and regulation. It makes a meaningful contribution to the contemporary discussion of international drug policy because it works up and down multiple levels to show how the regulations, uses, meanings, effects, and properties of ayahuasca confound the simplistic prohibitionist policies that continue to predominate. Ayahuasca, the contributors make clear, is an ideal case study for understanding the paradoxes and problems of the formal international drug control system and the deep meaning and value that indigenous groups invest in the ritualized use of substances that at a global level are problematized or prohibited. 446 pp. ISBN 978-3-643-90148-4.