recently husband s vimpat has been discontinued and 3 days before it was to be completely out of his system he has started to have symptoms similar of to previous symptoms related to low sodium which hospitalized him. His sodium continues to be on the low normal side. symptoms currently include tingling, fatigue, constipation, infrequent urination, loss of appetite, sleepiness, cold flashes, belching, soreness in throat when swallowing. blood work shows kidney functioning is normal, sodium is normal, potassium is normal, etc. some dehydration, nausea and vomiting (infrequent) and more towards end of day. After receiving fluids he returns to feeling good and normal and then by end of day all of this returns to this. blood pressure lisinpril has been discontinued today as a possible contributor