Table 5.

Central analgesic effect of methanolic extract of C. fistula.

Group	Treatment	Average time of tail immersion of Mice Time in Sec after Loading the Plant Sample/Drug
		30 min	60 min	90 min
Group I	Control	2.158 ±.0834	2.15 ±.03894	2.68 ± 0.10638
Group II	Standard	5.293 ± 0.0825**	10.018 ±.2732**	15.64 ± 0.241**
Group III	MESF (200 mg/kg)	2.995 ±.0924*	4.268 ±.0423**	5.403 ± 0.14505**
Group IV	MESF (400 mg/kg)	3.873 ±.0727**	4.938 ±.0909**	6.345 ±.06614**
Group V	MESF (600 mg/kg)	4.158 ±.1725**	5.465 ±.31,415**	7.61 ± 0.18918**

**and * respectively indicate that, the significant p value is less than 0.01 and 0.05 while comparing against control; data indicated as average ± Standard Error of Mean (n = 4). Group I as control group, given 1% Tween 80 in normal saline at a 10 mL/kg body weight dose, Group II (Standard drug morphine 2 mg/kg), Group III (MESF 200 = Methanol Soluble Fraction at 200 mg/kg body weight dose); Group IV (MESF 400 = Methanol Soluble Fraction at 400 mg/kg bw dose) and Group V (MESF 600 = Methanol Soluble Fraction at 600 mg/kg body weight dose).