My 2.9 year old son got seizure at 2.1 years. Its was twice between 4 hours of interval. After treatment we are giving him valparin two times 2.5 ml. Want to know, if this medicine can cause hyperactivity as he has this issue of hyperactivity. A known person mentioned that his hyperactivity could be due to this medicine, and we should seek second opinion. Can you suggest if removal of this medicine is considerable? I ll consult his doctor before taking any action, looking up suggestions on my concern.