My Son Is On Ability, And Recently Started Taking Depakote

my son is on ability, and recently started taking depakote 500 mg at night and prapropanol 2x a day as additives for psychosis and is having rolling eye movements. In the past he has taken 0.5 of cogentin and the eye rolling normally stops after a couple of days..should i request them to prescribe the cogentin and for how long. I usually stop him from taking it when the eye rolling subsides...