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 kg Serum alanine aminotransaminase 150IU/L Rise in serum ammonia level by 20 mcg/dL Lymphadenopathy