Is Memory Loss And Body Shaking The Side Effect Of Valparin?

Hi , I am taking Valparin chrono from last 3 year as 3 year back while sleeping I got fit (my body was shaking), Now I am seeing that I am lossing my memory power (short term memory loss), always remain silent, my hand shakes. In medical test (3 year back) my all reports EEG,MRI (brain) were normal. I heard that all these are side effects of Valparin , So can I discontinue the Valparin as I have not get any fit since last 3 years