Herndon, PharmD, BCPS, Christopher M., and Alexinna Johns, MD. “Is Oral Tramadol a Reasonable PRN Analgesic?”. Journal of Opioid Management 4, no. 1 (January 30, 2018): 8–10. Accessed May 4, 2024. https://wmpllc.org/ojs/index.php/jom/article/view/965.