A randomized, double blind, placebo controlled, clinical trial was carried out 40 type 2 diabetic patients independently of their basal hypoglycemic treatment. At beginning and at end of the study, BMI, waist circumference, a metabolic profile (fasting glucose, HbA1c, lipids and biosecurity profile), were measured. The patients were randomly assigned to receive the herbarium mixture (GU/TS) 1 g before each meal, or placebo for a period of 90 days. All patients received therapy medical nutrition.