Hi Thanks for choosing HCM for your query. As a matter of fact, sudden withdrawal of Valparin may result in harmful reactions in the form of chest pain, chills, face edema, fever, malaise, anorexia, gastrointestinal upset, abnormal dreams, amnesia, confusion, insomnia, nervousness, tingling or numbness sensation. To prevent these harmful withdrawal symptoms, the dose of Valparin has to be gradually tapered off or reduce over months this allows the body to gradually adopt the changes. The doctor has correctly advised the gradual dose reduction to stop the Valparin. You can maintain a diary regrading dosage reduction schedule. I hope your doubts have been clarified. A feed back is appreciated if you are convinced.