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