Table 1.

Percentage protection of crude extract of N. ruderalis (Nr.Cr) against castor oil (10 ml/kg)-induced diarrhoea in mice (n = 5).

Treatment (p.o.)	Mice with diarrhoea/total mice	Protection
Saline (10 ml/kg) + C. oil	5/5	0
Nr.Cr (300 mg/kg) + C. oil	4/5	20
Nr.Cr (500 mg/kg) + C. oil	2/5	60
Verapamil (50 mg/kg) + C. oil	0/5	100
Loperamide (10 mg/kg) + C. oil	0/5	100