Aphrodisiac activity of ethanol extract and fractions of Fadogia cienkowskii Shweinf. Rubiaceae roots in albino rats

Abstract

Fadogia cienkowskii is a shrub whose roots are used in many communities of Northern Nigeria to improve sexual performance; however, there is no scientific study to verify this claim. This study determined the effect of 70% ethanol extract of F. cienkowskii roots and its fractions (ethyl acetate, nbutanol, and residual ethanol) on mating behaviour (mounting, intromission and ejaculation) and serum testosterone concentration of male albino rats. Five groups of rats each containing 6 rats were treated with 50, 100 and 200 mg/kg of the crude ethanol extract, while Sildenafil and distilled water were administered to the control groups. Another set of 6 groups of rats were also used in the study and were treated with 12.5 and 25 mg/kg of the ethyl acetate, n-butanol and residual ethanol fractions, respectively. The crude extract and fractions significantly increased mount, intromission and ejaculation frequencies. The copulation efficiency also increased significantly-indicative of the plant's aphrodisiac potential. Significant increase of testosterone in serum of extract treated rats was also observed, which is a further credence to the plant's aphrodisiac potential. It was thus concluded that the 70% ethanol root extract of F. cienkowskii and its fractions have aphrodisiac activity with the nbutanol and residual ethanol fractions being more active.