Effect of Mulberry Leaf Extract on Blood Glucose

Inclusion Criteria: * Age: over 20 years * Fasting glucose: 100mg/dl ≤ \~ ≤ 125mg/dl * HbA1c: \< 6.5% Exclusion Criteria: * Subject who has taken medicines, Chinese medicines and Health/Functional Foods which can affect glucose metabolism in 30 days prior to screening visit * Subject who has taken part in other clinical trials in 30 days prior to screening visit * Subject who is pregnant or breast feeding * Subject who lost body weight over 4 kg in 30 days prior to screening visit * Alcoholic * Heavy smoker (≥ 20 cigarettes/day) * Subject who has heart failure, coronary artery disease, uncontrolled hypertension (≥ 140/90mmHg), diabetes (fasting blood glucose ≥ 126mg/dL), renal dysfunction, liver failure, hyperthyroidism, hypothyroidism, cancer or mental disease * Subject who has an allergy to the ingredients of study product