Systematic Review: There is insufficient evidence to recommend the use of any medicines to prevent post‐traumatic stress disorder in people exposed to a traumatic event.

Early pharmacological interventions for universal prevention of post‐traumatic stress disorder (PTSD) – Cochrane Library

Summary: Medicines for preventing post-traumatic stress disorder (PTSD) – Cochrane Library

Commentary on Twitter

Medicines for preventing post‐traumatic stress disorder #PTSD https://t.co/pmH0a8mNU8 New @Cochrane_CCMD systematic review looks at the evidence from 13 studies/2023 participants and "provides uncertain evidence only"

— The Cochrane Library (@CochraneLibrary) February 15, 2022