Hi, Kelly...nice to meet you!
I began Depakote approximately 15 years ago. The main side effect I had was almost constant diarrhea. Due to that pdoc switched me to Depakote ER after a couple of years. That made all the difference and I have experienced none of the negative side effects with it.
I don't have any knowledge of Tomopax. I am in the process now of being switched from Depakote ER to Lamictal so right now I'm on both. Have you talked to your pdoc about Lamictal? It might provide another option.
Good luck to you! I know these drug choices are so hard.