Abstract
Calculate morphine milligram equivalents (MME) for opioid dose comparison using standardized methods. Includes API wrapper functions to call 'NIH HEAL MME Online Calculator' and functions that replicate API calculations on the user's local machine from the comfort of 'R'. Creation of the 'NIH HEAL MME Online Calculator' and the MME calculations implemented in this package are described in Adams MCB, Sward KA, Perkins ML, Hurley RW (2025) .