extract on estrous cycle and sex hormones in female rats. Methods: Forty-eight virgin rats
with regular 4-day cycle were grouped into four and each group was further subdivided into
'a'and 'b'(n= 6). Each group was orally treated for 28 days with 2 mL of distilled water
(control), ethanol root bark extract of S. lehmbachii in doses of 250, 500 and 750 mg/kg/body
weight (groups 2, 3, 4, respectively). Estrous cycle was determined daily using the vaginal …