Analgesic and anticonvulsant effects of saponin isolated from the leaves of Clerodendrum infortunatum Linn. in mice.

Saponin (SN1) isolated from C. infortunatum leaves in doses of 30, 50, 75 and 100 mg/kg, ip provided 36.28, 60.47, 90.71, 100% protection respectively from writhing induced by 1.2% v/v acetic acid. In hot plate method, SN1 not only produced analgesia in mice but also potentiated the analgesic action of pentazocine and aspirin. The anticonvulsant activity was tested by leptazol-induced seizures. SN1 decreased the duration of seizures and gave protection in a dose dependent manner against leptazol-induced convulsions. The results suggest that saponin has significant analgesic and anticonvulsant effects.