Faded Memories (2021)

Army veteran Frank Mason is losing his memory and his son Tom is desperate to try anything to help his dad, including him to be part of a clinical trial of the military's latest drug for mental acuity in combat, Deimosomine. However, no one can fathom the drug's sinister side effect: it turns people in to psychopathic homicidal maniacs, and the bodies are starting to pile up!