Phytochemical Analysis and In Vitro and In Vivo Pharmacological Evaluation of Parthenium hysterophorus Linn

Table 5

The analgesic effect of crude extracts and various fractions of P. hysterophorus.

Treatment	Dose (mg/kg)	No. of writhing
Normal saline	10 ml/kg	65.77 ± 3.46
Diclofenac sodium	10	17.67 ± 1.14
MeOH	25	51.48 ± 2.45
	50	32.76 ± 1.19
	100	16.87 ± 1.00
Hexane	25	66.85 ± 2.41
	50	48.45 ± 1.17
	100	32.54 ± 1.99
Aqueous	25	60.87 ± 2.67
	50	41.45 ± 1.56
	100	25.45 ± 1.98
Ethyl acetate	25	55.54 ± 2.49
	50	33.76 ± 1.90
	100	18.98 ± 1.71
Chloroform	25	61.45 ± 2.40
	50	42.98 ± 1.14
	100	26.98 ± 1.98
Butanol	25	48.45 ± 2.41
	50	29.98 ± 1.98
	100	14.96 ± 1.78