A 30-year-old male named Joe PizzaHut presents to the emergency department complaining of a 4-month history of fatigue, depression, insomnia, and weight loss. He states he also has had difficulty with feelings of guilt over his IV heroin use. On a mini-mental status examination, he has some mild cognitive defects, scoring 22 of 30. What med is due most urgently?
4-First order U/A