Is it possible he is the special patient who recently got one-off permission to access the other medication? Everyone assumed it was a certain politician, but if so it's not working and if anything weight went up instead. This governor fits the initial details that came out. Just speculating, obviously.
The governor says he used a GLP-1 drug, which I guess means one popular option. Still, I suspect he might not be telling the truth and is probably on something else because dropping 80 pounds on that option is quite rare.