Journal of Psychedelic Studies
August 13, 2026
Kevin Feeney, Tristan Kallweit
Abstract Background and aims In the past 10 years, several publications have made the dubious assertion that Amanita muscaria is commonly used for suicidal purposes, though no primary sources are cited. Despite scientific advances in understanding A. muscaria 's pharmacology, discussion of this psychoactive mushroom in academic publications continues to be shrouded in bias and myth. The present...
International journal of medicinal mushrooms
2025
Kevin Feeney, James Kababick, Stacy Wise
1 citation
The English mycological and toxicological literature has, for decades, asserted that muscarine concentrations in Amanita muscaria are insignificant based on a study from the 1950s that demonstrated muscarine levels in fresh A. muscaria mushrooms at a meager 0.0003%. This position has been maintained despite frequent reports of cholinergic symptoms following consumption of this mushroom and...
Periferia
December 26, 2011
Beatriz Caiuby Labate, Kevin Feeney
6 citations
"Este artigo propõe um resumo e uma análise da regulamentação da ayahuasca no Brasil, desde sua pro ibição em meados dos anos 80 até a recente adoção da Resolução de 2 010 do CONAD, que estabeleceu um conjunto de regras, normas e pri ncípios éticos a serem aplicados aos usos religiosos e rituais da ayahuasca. O processo regulatório do Brasil é usado como ponto de pa rtida para explorar o...
International Journal of Drug Policy
August 19, 2011
Beatriz Caiuby Labate, Kevin Feeney
142 citations
BackgroundThis paper provides a summary and analysis of the regulation of ayahuasca in Brazil, from its prohibition in the mid-eighties to the recent adoption of CONAD's (Conselho Nacional de Políticas sobre Drogas) 2010 Resolution, which established a set of rules, norms and ethical principles to be applied to religious and ritual uses of ayahuasca. Brazil's regulatory process is used as a...
Journal of Psychoactive Drugs
December 1, 2010
Kevin Feeney
18 citations
In 1968 R. Gordon Wasson first proposed his groundbreaking theory identifying Soma, the hallucinogenic sacrament of the Vedas, as the Amanita muscaria mushroom. While Wasson's theory has garnered acclaim, it is not without its faults. One omission in Wasson's theory is his failure to explain how pressing and filtering Soma, as described in the Rig Veda, supports his theory of Soma's identity....