If it's any help, you can look forward to items which give MP and HP per turn in battle. I found that once I'd put those on, my use of items dropped dramatically.
I don't remember all my details, but I do remember that I had the Magic Scissors (weapon) and the Butterfly Shield on Cybel, and that more or less took care of her permanently for MP. Xendra gets HP regeneration as a passive skill when she levels up a bit, as does Sandy, there's another shield which gives the whole party a bit of HP every turn, things like that.