what does water have to do with anything?
Edit: there is one aed drug I haven't tried, vimpat. Maybe that could stand in, but it overlaps with another I take already, and isn't really meant to be used together. I risk flopping around on the ground playing with those drugs, when after years I'm just now toning down other symptoms like temporary blindness and cluster headaches. Maybe you could call those quality of life things, but they are probably breaking my brain down a bit.