I don't know where you read that phentermine should not be used with people who have a history of emotional disorders. It is not an outright contraindication as far as I know. It should be used cautiously however probably because of some of the potential side effects such as nervousness, insomnia, anxiety, tension, agitation and confusion. Depakote should not be a problem in combination with phentermine.
Medicine is replete with exceptions to the rules.
Your personal physician is the best one to make that determination for you. I expect to end up back on the depakote. When i was on zyprexa i gained about 40 pounds in a month. There are no responses to this message. I expect to end up back on the depakote.