Abstract
To address this gap, we conducted a convergent mixed-methods case series study on eight military veterans with PTSD who participated in a 3-day ayahuasca intervention in Central America. Clinically meaningful changes from pre- to posttreatment and at a 3-month follow-up were assessed in three ways using: (a) PTSD checklist-5 (PCL-5); (b) experience sampling measurement of momentary PTSD and mood symptoms; and (c) an open-ended survey on perceived benefits. The majority (87.5%; 7/8) of participants demonstrated reliable and/or clinically significant changes in PCL-5 symptoms by posttreatment, which were maintained by 70% (5/7) of veterans by the 3-month follow-up. On average, veterans also reported significant improvements in momentary PTSD symptoms, as well as negative and positive affect in daily life posttreatment, with 63% (5/8) reporting moderate-to-large improvements in these domains. Broad themes characterizing the perceived benefits of ayahuasca included deep positive emotions, decentering/acceptance, and purpose in life; adverse acute experiences were, however, reported. This study provides preliminary support for the clinically meaningful and lasting benefits of a brief ayahuasca intervention on PTSD/mood symptoms in military veterans. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
Published Version
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