Anticonvulsant profile of Siotone granules, a herbal preparation.

Siotone granule, a herbal psychotropic formulation was tested for its effectiveness in various models of convulsions in animals. S. granule (100 and 200 mg/kg) offered significant protection against pentylenetetrazol-, maximal electroshock- and strychnine-induced convulsions. In hypoxic stress-induced convulsions only 200 mg/kg was effective. It also reduced percent mortality per se and rendered total protection when given in combination with sub-protective dose of diazepam (0.5 mg/kg) and MK-801 (0.1 mg/kg) against pentylenetetrazol-induced convulsions. The anticonvulsant action of S. granule was blocked by flumazenil (4 mg/kg) suggesting the involvement of GABAergic mechanism.