Pregabalin vs. Gabapentin on Reducing Opioid Usage

Patients will receive 50 mg every 8 hours without dose titration. Patients with CrCl \< 60mL/min will receive same dose given q12 hours. The q12 hour regimen may be increased to q8 hours if CrCl increases above 60mL/min during the 7 days study period or until discharge (if \< 7 days post-enrollment).

Patients will receive 300 mg PO every 8 hours without dose titration. Patients with CrCl \< 60mL/min will receive same dose given q12 hours. The q12 hour regimen may be increased to q8 hours if CrCl increases above 60mL/min during the 7 days study period or until discharge (if \< 7 days post-enrollment).

Patients will receive neither Pregabalin nor Gabapentin.