I am 41 years old & I am having problem of epilepsy since last 20 years and taking valparin chrono 1000 mg per day since last 5 years I have no seizure so gradually reduce its dose by doctor now I took valparin chrono 200 mg at night so I want to know that how much period I continue this dose if I have no problem my Dr. Is now out of station since long so tell me the period this is my last dose after I have to stop medicine.