Currently, there are no empirically validated, evidence-based pharmacological interventions for the treatment of Severe Disorders of Consciousness (SDOC). In addition, it is unclear why poly-pharmacological interventions, while more common in the treatment of other disorders (e.g., cancer, chronic pain), have not been embraced for the treatment SDOC; some of the lone agents used in treatment of SDOC patients are not "indicated" for combined treatment.