I was only on lithium for about a week before I had to stop. In that week I tapered up to about 650mgs, it was while I was in the hospital that I started it. I had to quit like 2 days after being discharged because I started getting extreme tremors in my hands. I got twitches as well from Abilify, even at my starting dose (I got up to 15mg then they switched me bc it didn't help me at all) Plus I just felt weird in lithium dk. You can talk to your psych about not taking it if you have concerns, they can't force you.