Clinical Observations on the Dose-effect Relationship of Gegen Qin Lian Decoction () on 54 Out-patients with Type 2 Diabetes

Objective To observe the therapeutic effect of different dosages of Gegen Qin Lian Decoction ( ) on type 2 diabetic patients. Methods Fifty-four type 2 diabetic patients from low dosage group (20 cases), medium dosage group (19 cases) and high dosage group (15 cases) were treated with different dosage of Gegen Qin Lian Decoction for 12 weeks. Fasting blood-glucose (FBG), postprandial blood sugar (PBG) and Hemoglobin A1c (HbAlc) were determined before and after treatment. Results With the increase of dosage, the overall effective rate of glycaemic control increased, and FBG, PBG, HbAlc decreased. The overall effective rate of blood glucose control of high dosage, medium dosage and low dosage group were 80%, 47%, 30% respectively, and there were significant differences between high dosage group and low dosage group. The decrease of FBG, PBG and HbAlc of high dosage showed significant differences from low dosage too. These data was analyzed by trend χ 2 test and covariance analysis. Conclusion The result indicated that different dosage of Gegen Qin Lian Decoction has dose-effect relationship in reducing HbAlc and FBG.