An individual suffering from post-traumatic stress disorder (PTSD) can continue to re-experience the traumatic incident, which can involve a sense of extreme fear. In this article, the authors describe the case of a 36-year-old gentleman in whom the use of propranolol for the management of these persistent PTSD symptoms proved beneficial and led to the resolution of his flashback symptoms following difficulty in initial management with multiple other first-line treatment modalities. Propranolol is currently not licensed for use in PTSD.