Diarrhea, stomach pain (which is confusing because I already have gastritis), lack of appetite, overall weird feeling (restless yet unfocused is the best way I can describe it), some anxiety. I went ahead and reduced my Lithium to 900 mg today and yesterday. I felt better earlier when I had only taken 600 mg throughout the day (lunch and dinner). I felt really calm and peaceful, almost flat. But then I took another 300 mg with my nighttime meds, and I'm back to feeling a little weird again. I'll report all this to my pdoc tomorrow.