Table 5.

Effect of MeOH and n-BuOH extracts of V. nubicum on acetic acid induced abdominal constriction in rats.

Groups	Treatment (mg/kg)	Number of writhings for 30 min	Inhibition (%)
I	Control	97.5 ± 3.5
II	MeOH extract (200 mg/kg b.w.)	48.25 ± 4.10*	50.5%
III	MeOH extract (400 mg/kg b.w.)	37.47 ± 2.44*a,b	61.57%
IV	n-BuOH extract (100 mg/kg b.w.)	42.80 ± 2.16*a	56.10%
V	Butanol extract n-BuOH extract (200 mg/kg b.w.)	32.70 ± 3.00*b	66.46%
VI	Aspirin (100 mg/kg b.w.)	38.11 ± 2.40*a	60.91%

Note: Aspirin is used as a reference.

*Significant at p < 0.05, Groups (II–VI) were compared with group (I). Data shown are mean ± standard deviation of number of observations within each treatment. Data followed by the same letter are not significantly different at p ≤ 0.05.