AIM: To investigate the effects of ginsenoside C-K on behavior in epileptic rats and its synergistic effect with lamotrigine. METHODS: 70 male SD rats were randomly divided into normal group, model group, lamotrigine group, ginsenoside C-K low, middle, high group, lamotrigine and ginsenoside C-K combination group. Rats in model group and treatment group were prepared for epilepsy animal model by intraperitoneal injection of lithium chloride-pilocarpine after administration of lamotrigine or ginsenoside C-K. Behavior changes were closely observed by video monitoring system after pilocarpine. Behavioural seizure activity was scored according to Racine grading standard and recorded seizure latency. RESULTS: After treatment of ginsenoside C-K, the treatment group rats exhibited significant an increase in seizure latency compared with epilepsy model group. The loss of body wieght reduced significantly in these surviving animals pretreated with ginsenoside C-K(n=10, P<0.05). Intriguingly, the complex of ginsenoside C-K and lamotrigine reduces seizure intensities, seizure latency was further prolonged(n=10, P<0.05). CONCLUSION: Ginsenoside C-K can exhibit an antiepileptic effect. The combination of ginsenoside C-K and lamotrigine have synergistic anti-epileptic effect.