A 16-yeаr-оld mаle аdоlescent is admitted tо an inpatient unit because of symptoms that include 7 days of euphoric mood, impulsive behavior, racing thoughts, decreased need for sleep, and pressured speech. He has no past medical history. History is significant for one past major depressive episode. The urine drug screen is negative. Which of the following is an FDA-approved treatment for his current presentation?