Clinical Research Directory

Inclusion Criteria: * Be Veterans (male and female; any race; 18-65 years of age) * Be English speaking * Be accessible via phone * Be non-decisionally impaired * Attest to there being no chance of being or becoming pregnant during the study (if female) * Attest to no history of maple syrup urine disease or known family history of maple urine syrup disease * Have either a history of self-reported sleep disturbances, either as determined via the Insomnia Severity Index, Functional Outcomes of Sleep Questionnaire or Epworth Sleepiness Scale, clinical assessment, and/or a history of self-reported cognitive disturbance (e.g., poor memory, concentration, attention) * Not have an allergy to sucralose * Not be a shift worker (e.g. have worked night or rotating shifts more than twice in the past month) * Not have a diagnosis of amyotrophic lateral sclerosis * Not be currently supplementing their diet with branched chain amino acids * Not be starting another sleep intervention (e.g., positive airway pressure therapy for sleep apnea, sedative-hypnotic medication, or cognitive behavioral therapy for insomnia) during the study * if already engaged in another sleep intervention, this must be stable and not undergo further changes during the study * Meet diagnostic criteria for TBI using a validated clinical interview Exclusion Criteria: * Pregnancy or female trying to conceive * Under 18 years old * Known history of maple syrup urine disease * Dementia