RESUMO
Despite availability and administration of numerous antiepileptic drugs [AEDs] nearly 15% of childhood epilepsy cases are resistant to treatment; in traditional medicine however Nigella sativa L. [Black seed] has been known for its anticonvulsant effects. In this double-blind clinical trial conducted on children with refractory epilepsy we administered the aqueous extract of black seed as an adjunct therapy and compared the effects with those of a placebo. The study was performed between Sep 2003 and Nov 2004. The subjects received either extract or placebo for a period of four weeks and between these two periods for two weeks they received only their pre-existing anti-epileptic drugs [AEDs]. The mean frequency of seizures decreased significantly during treatment with extract, [p-value =0/007]. It can be concluded that the water extract of Nigella sativa L. has antiepileptic effects in children with refractory seizures that do not respond to known AEDS