Emotional numbness on mood stabilizers?

After a literal year from hell I finally have been consistently back on mood stabilizers for BP1. Things are starting to even out but I also just feel so flat? I feel like I'm not depressed but I have absolutely no interest to do anything, nothing interests me or excites me and I kinda of just feel like a husk of a human being. I know I've felt like this before but I don't remember if I've felt like this on meds, especially the early stages of being on them. Anyone else have similar experiences?