An obese 70-year-old male with chronic pain due to osteoarthritis complains of fatigue,
anhedonia, hypersomnolence, and increased appetite. Which one of the following would be the
best pharmacologic agent for this patient?'

A) Duloxetine (Cymbalta)
B) Mirtazapine (Remeron)
C) Citalopram (Celexa)
D) Paroxetine (Paxil)
E) Nortriptyline (Pamelor)