Table 3

Effect of aqueous extract of burdock roots on penile reflexes (test for potency)

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)


Erection

6.6 ± 0.9

8.0 ± 1.1

10.2 ± 1.2*

11.2 ± 1.3**

12.4 ± 1.1**


Quick flips

5.2 ± 0.9

6.8 ± 0.9

8.6 ± 1.2*

9.8 ± 1.2**

11.4 ± 1.4**


Long flips

2.3 ± 0.4

3.4 ± 0.8

4.6 ± 0.8*

7.8 ± 1.1**

8.2 ± 0.9**


Total penile reflex

14.1 ± 2.2

18.2 ± 2.8

23.4 ± 3.2*

28.8 ± 3.6**

32.0 ± 3.4**


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.

JianFeng et al. BMC Complementary and Alternative Medicine 2012 12:8   doi:10.1186/1472-6882-12-8

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