Table 2.

Effects of TSN on acetic-acid-induced writhing response in mice.

Treatment group	Dose (mg/kg)	Number of writhes	Inhibition (%)
Control	—	71 ± 19	—
YMGP	928	33 ± 8**	54.5
	6	38 ± 8**	46.5
TSN	12	33 ± 9*	53.6
	24	29 ± 8**	59.2

Values are expressed as mean ± SD (n = 10).

Control (vehicle): distilled water; YMGP: Yemugua tablet; TSN: total saponins from Nigella glandulifera. **P < 0.01, *P < 0.05, compared with corresponding control.