by Public Library of Science Preparation of ayahuasca (from B. caapi and P. viridis). Credit: Daniel Perkins, CC-BY 4.0 (creativecommons.org/licenses/by/4.0/) There is a high rate of adverse physical effects and challenging psychological effects from using the plant-based psychoactive ayahuasca, though they are generally not severe, according to a new study by Daniel Perkins of University...