Table 1.

Effects of methanolic acetate fraction of P. stratiotes on acetic acid‐induced writhing in mice

Groups	Dose (mg/kg)	No. of “writhes”	% inhibition
Group I	Vehicle	39.75 ± 2.14b
Group II	10 (standard)	8.5 ± 1.14	78.62
Group III	200	18.75 ± 1.76a	52.83
Group IV	400	12.75 ± 2.09c	67.92

Dunnett's t test compared to control (one‐way ANOVA followed by Dunnett's test). Group I animals received vehicle (1% Tween 80 in water), group II received indomethacin (10 mg/kg body weight), and groups III and IV were treated with, respectively, 200 and 400 mg/kg (p/o) methanolic acetate fraction of P. stratiotes.

Values are means ± SEM (n = 5).

P < 0.05.