Table 3.

Effect of leaf extract of P. hydropiper extract in acetic acid-induced writhing test

Treatment	Dose (mg/kg)	Number of writhing	Inhibition (%)
Control	0.1 ml/mouse	64.7 ± 2.96	-
Diclofenac sodium	10	15.6 ± 1.47*	75.89
MEPH	25	48.7 ± 1.92*	24.73
MEPH	50	37.8 ± 1.32*	41.58
MEPH	75	21.0 ± 3.06*	67.54

Each value is presented as the Mean ± SEM (n = 5). MEPH = Methanolic extract of. P. hydropiper leaves.

*p < 0.001 compared with the control group (Dunnett’s test).