GSTM1 and benign prostatic hyperplasia: As seen in this study, no significant differences were found in the PCV, WBC, RBC, Hb, MCV, MCH and MCHC in the BPH group relative to the control; similarly, no significant differences were found in the PCV, WBC, RBC, Hb, MCV, MCH and MCHC in the finasteride or test groups 1 and 2 rats relative to the BPH group, affirming the results of the acute toxicity study that showed the non-toxicity of the leaf extract of S. malaccense.