The effects of the methanolic extracts of the leaves of
Phyllanthus amarus
on the hormonal
parameters of male Guinea pigs were investigated. The phytochemical screening of the leaves of
Phyllanthus amarus
was also carried out. The hormonal parameters investigated are testosterone, Leutinizing and Follicle stimulating
hormone. The methanolic extract of the Phyllanthus amarus leaves (50-800mg/kg) caused a statistically significance
increase ( P < 0.001, ANOVA) in the level of Testosterone of the male Guinea pigs, from 2.3 ± 0.06 to 3.9 ± 0.05, 4.3
± 0.6 and 2.8 ± 0.6 after the 7, 14th and 21st day of the administration of the extracts respectively . The highest
increase was obtained after 14th day of treatment (4.3 ±.05). These effects were very comparable to the effects of
Vitamin E on the testosterone of male Guinea pigs, which were obtained to be 3.0 ± 0.01, 3.1 ± 0.16 and 2.4 ± 0.30
for 7, 14
th and 21
st day respectively. These effects were dose- and time- dependents. The optimum effects (4.3 ±.05)
were obtained at 400mg/kg of
Phyllanthus amarus.
Furthermore, the methanol extracts of
Phyllanthus amarus (800mg/kg) caused an insignificant change in the levels of
Leutenizing (LH) and Follicle stimulating (FSH) hormones from 3.1±0.22 and 1.6±0.50 to 3.0 ±0.08 and 1.5 ± 0.13
respectively. These effects were also comparable to the effects of Vitamin E on these hormones.
Finally, the phytochemical screening of the leaves of
Phyllanthus amarus revealed the presence of flavonoids,
tannins, alkaloids, terpenoids, steroids, saponins and cardiac glycosides. This may support or justify the claims on the
use of the aerial part of this plant by traditional medicine practitioners to increase/improve libido and reproductive
function in men. Although further studies need to be done to investigate the contribution of the seeds of this plant in
the improvement of libido in men; also to isolate and characterize the active principles in the leaf extracts. @ JASEM
