Effects of aqueous leaf extracts of
Bryophyllum Pinnatum
(AEBP) on some neuropharmacological activities were studied in mice. The extract in dosages (50,100 and 200 mg/kg) was found to produce a profound decrease in exploratory activity in a dose-dependent manner. It also showed a marked sedative effect as evidenced by a significant reduction in gross behaviour and potentiation of pentobarbitone-induced sleeping time. It delayed onset in strychnine-and picrotoxin-induced convulsion (seizures) respectively with the protective effect being significantly higher in picrotoxin- than strychnine-induced convulsion. It also decreases the rate of picrotoxin-induced mortality in mice with LD
50 of 641mg/kg. The totality of these effects showed that the extract possesses depressant action on the central nervous system
