A 34-year-old female diagnosed with fibromyalgia, generalized anxiety disorder, and depression is currently taking several psychotropic medications, including alprazolam, duloxetine, pregabalin, and hydrocodone/acetaminophen. The patient continues to have some residual pain, anxiety, and mood symptoms. The PMHNP is considering simplifying the patient's regimen and plans to discontinue the least efficacious medication for the patient's disorders. Which of the following medications should be discontinued?