Hy Gabriel,
I've investigated just on entities that are available, even there is no "Open in Excel" icon on the regulated/restricted products forms.
But there exist four entitiies which belong to regulated/restricted product list. I didn't try but they looks to be importable from DMF.
So you can try importing using this entities:


For my experience I would first create records inside D365FO, export the data using this enities and then prepare the import file in same way as the export to have less failure during import.