I did better when I took it all at night. I was on regular release, lithobid and eskalith over time and took the full doses of all of those at night. It helped a lot with side effects.

Make sure you are eating enough salt. I used to get really sick if I didn't have enough salt and then nothing would sound good until I realized I needed something salty which often settled things down. I learned if I had diarrhea I needed salt. Since I didn't eat much salt or ever add it to anything prior to lithium that was a big adjustment for me.