I liked celexa, made me feel little fuzzy, but a slight sense of well being, doctor presribed trazedone to help me sleep after I quit drinking, then another doctor took me off it because he said I shouldn't take more that one antidepressant. I don't know about lithium, but I started depakote lately to replace risperidone because I was going from a depressed state to a mixed mania. I was tired and now I am not at all. Definately consult a psych to re-evaluate your meds. sometimes less is more.
I wish you well.