Ayahuasca (IMAGE) University of Exeter Caption Ayahuasca is a blend of the Psychotria Viridis bush and the stems of the Banisteriopsis Caapi vine. Credit Rafael Guimarães dos Santos Usage Restrictions This image may only be used with reports of this research License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.