Effect of aqueous extract of Arctium lappa L. (burdock) roots on the sexual behavior of male rats

Table 2 Effect of administration of aqueous extract of burdock roots for 15 days on serum testosterone concentrations

Parameter	Mean frequency ± S.E.M
	Control	Burdock extract 300 mg/kg	Burdock extract 600 mg/kg	Burdock extract 1,200 mg/kg	Viagra (60 mg/kg)
Testosterone	2.3 ± 0.4	3.2 ± 0.5	4.3 ± 0.5*	5.2 ± 0.5**	2.9 ± 0.6

S.E.M.: mean standard error. n = 6 (number of animals in each group), significant difference from control, significance level: *p < 0.05, **p < 0.01

ISSN: 2662-7671