My father is 68 years old n he has been suffering from epilepsy for last 20 yrs. Recently he has been showing many symptoms of epilepsy like not responding anything. Not able to express n body imbalance. We consulted his regular neurologist n he advised valparin 300 mg tab to be taken with other regular AED like Epsolin 100 mg 4 tab a day n phenobarbitone 60mg in morning n 90mg at night. Please advise.