My son aged 8 yrs six months. As per Doctor s advice, He is taking Valprin 300 (chrono)/Epilex (crono 300) as he is under treatment of Convulsion/epilepsy. It happens two times within six months. Now he is OK. The problem is sometimes he is having vomiting sensation. We will give some homeopathic medicine for that. He is taking one tablet each, one in the morning and one in the night after food. I want to know, whether any side effect in taking Epilex/Valprin 300 Mg tablet. he is very active and his weight is 40Kg and good height. Please let know his weight is normal. How much time to continue this tablets. As per doctor s advice, he has to take medicine for two years.