This study aims to determine the effect of supplemental N-acetyl cysteine and additional multi-vitamin/mineral therapy on somatic, cognitive, and emotional post-concussion symptoms as determined by the Rivermeade Post-concussion Questionnaire (RPQ) within 24 hours of admission, post injury day 7, and post injury day 30. The RPQ questionnaires will be given to patients older than 60 years, who have been evaluated by the HonorHealth John C. Lincoln Medical Center or Deer Valley Medical Center trauma service within 3 hours of sustaining a traumatic brain injury (TBI).