A 54-year-old woman comes to the physician for a one-year history of generalized muscle pain. The pain is worse during stress but is always present. Vitals are within normal limits. Physical examination is unremarkable apart from 12 areas of muscle point tenderness. In addition to recommending aerobic exercise, which of the following is the most appropriate pharmacologic therapy for this patient?
Amantadine therapy
Antidepressant therapy
Benzodiazepine therapy
Corticosteroid therapy
Evening primrose oil therapy
Opioid therapy
