Depakote once stopped time stay in the system

Due to brain hemorrhage caused by Coumadin. I started having seizures and neurologist prescribed Depakote increased from 1,000 mg. x day up to 2,500 mg. x day and until today I was taking 2,000 mg. of Depakote ER. However, due to serious side effects (lack of coordination, confusion, loss of appetite, hair loss, unsteady on my feet, tremors) today neurologist switched me out of Depakote. Last level reading 4 days ago show 110 Question is: How long Depakote usually stay in the system once you have stopped?