Ayahoasca 2 Gas Chromatography-Mass Spectrometry 2 Gas chromatography-mass spectrometry 2 Hallucinogens 2 Humans 2 Hydrocortisone 2 MAO 2 Methylated indolalkylamines 2 N,N-Dimethyltryptamine Plant Extracts 2 Prolactin 2 Psychodisleptic 2 Schizophrenia 2 Serotonin 2 South America 2 Transmethylation hypothesis 2 article 2 ayahoasca extract 2 ayurvedic drug 2 botany 2 controlled study 2 drinking 2 drug accumulation 2 drug potency 2 enzyme activity 2 ethnopharmacology 2 extraction 2 gas chromatography 2 human 2 human experiment 2