Magnesium and Riboflavin Treatment for Post-Concussion Headache

Inclusion Criteria: * Seen at University of Virginia Student Health and Wellness Center or Emergency Department for Initial Visit for Concussion; * Less than 3 days have elapsed since their injury; * Able to swallow capsules Exclusion Criteria: * Concussion complicated by cranial bleed, skull fracture, additional severe injury; * Kidney disfunction or failure; * Significant gastro-intestinal dysfunction; * Varsity Athlete; * Two or more previous concussions; * Women who are pregnant or breast feeding; * Taking tetracycline, fluoroquinolone, iron digoxin, chlorpromazine or penicillamine