Inclusion Criteria:  Male or female aged between 18 and 65 years. diagnosed in their medical history as pre-diabetic patient with fasting plasma glucose (FPG) between 100 and 125 mg dL-1. blood pressure within the normal range (systolic blood pressure ≤ 140 mmHg, diastolic blood pressure ≤ 90 mmHg). having no other health complications.  Exclusion Criteria:  taking any treatment with either insulin or anti-diabetic drugs. taking any other natural health products known to impact blood sugar, or polyphenol absorption (e.g. fish oil). having liver, thyroid, or significant gastrointestinal disorders. pregnant or lactation currently Smoker.