Currently, parents and caregivers of children with NS report that children respond to locally available anti-epileptic drugs (AEDs) differently; some reporting that there is a response and others not. These locally available AEDs include carbamazepine, phenytoin, phenobarbitone, and valproate. However, this information is anecdotal and it remains unclear whether children receive medications on a regular basis, what doses are administered or adhered to, or whether they achieve therapeutic levels of AEDs. The investigators therefore additionally propose two AED treatment arms with conventional anti-epileptic therapy including sodium valproate and phenytoin, in order to validate the reported response to conventional anti-epileptic drugs.