<prompt> A 15 yr old boy suffering from epiliepsy is on treatment with a combination of Phenytoin and Valproate. Both the drugs levels are in the level of therapeutic range. Which of the following is not an adverse effect of Valproate?Weight gain of 5 kgSerum alanine aminotransaminase 150IULRise in serum ammonia level by 20 mcgdLLymphadenopathy  <response>: Neurologic side effects of valproic acid are ataxia, sedation, tremor and Systemic side effects of valproic acid are hepatotoxicity, thrombocytopenia, gastrointestinal irritation, weight gain, transient alopecia and hyperammonemia. Ref: Harrisons Internal Medicine, 18th Edition, Page 3263 Tables 369-9 