Bryan Bernart gained 15 pounds in the month leading up to the first phase of filming, then lost it for the second phase. Bernart altered his appearance in order to underscore actual symptoms of post-traumatic stress disorder, one of Blott's themes.
After only 3 days of shooting, the production went on hiatus for 2 months so Bryan Bernart could prepare for the second phase.
Inspired by writer-director Edd Blott's real-life experiences with post-traumatic stress disorder.
For the vomit scene, Bryan Bernart had to drink a custom made beverage that included beer and mustard to induce actual vomiting.
The wedding ring worn by Bryan Bernart's character is writer-director Edd Blott's real wedding ring.