Italian to English Medical Medical: Health Care Medications

This acronym shows up in a list of criteria for inclusion/exclusion of patients in a clinical trial. I'm doing a BACK translation, and I have to trust that the original translator knew what he/she was doing. The sentence:

" ... in cura con ... farmaci dove almeno uno di questi sia somministrato a un dossaggio inferiore alla meta' di quello massimo (come indicato in *MOP*) ... "

Quindi, cos'e' questo MOP? There is no term preceding this that may give a clue about these initials. The study is about diabetes treatment, and here the text talks about the dosage of medication the subjects may be taking before being admitted into the study.

Thanks to all again :)