Bluemoon, my XH took Lexapro for depression and he told me it really helped him with his anger. For him, anger was one important symptom of his depression--and with lexapro, he just wasn't so angry anymore. (I don't really understand it as I do not react with anger to being depressed, but I guess anger is not an uncommon depression symptom.) Maybe the lexapro can help with the acting out (tantrums) but you can still work on the anger that you hold. I think this is a really good question to ask your PNP and also your therapist. Does your therapist think you would not be able to work on anger ij therapy if you take too much anti-depressant? What is your reason for taking the lexapro? Sometimes it is prescribed for anxiety and sometimes for depression. Has it helped with the symptoms you originally took it for?