Abstract:Objective: To observe the clinical efficacy of Trigonella foenum-graecum saponin(TFGs) in patients with type 2 diabetes mellitus(T2DM) not well controlled by western medicine.Method: Seventy two T2DM patients,whose blood glucoses were not well controlled by oral sulfonylureas hypoglycemic drug,were randomly assigned to control group(36 cases) and treatment group(36 cases).Aside from their original western medicine,the subjects were respectively given placebo and TFGs for 12 weeks.Result: After treatment,the total effective rate in treatment group was remarkably higher than in control group(P<0.01),and the indexes of fast plasma glucose(FPG),plasma glucose 2 hours after meals(2 h PG),glycosylated hemoglobin(HbA1c) and clinical symptomatic accumulated points(CSAP) decreased significantly in treatment group(P<0.01),while no obvious changes were shown in the indicators of BMI,hepatic and renal function.Conclusion: The combined therapy of TFGs together with sulfonylureas hypoglycemic drug could not only decrease blood glucose,but also ameliorate clinical symptoms with very good safety.