Effect of a Food Supplement on Glycemic Parameters in Patients With Impaired Glucose Metabolism

Inclusion Criteria: * body mass index (BMI) 25.0-29.9 kg/m2 * FPG levels between 100 and 125 mg/dl \[IFG diagnosed after Oral Glucose Tolerance Test (OGTT)\] * HOMA-IR \> 2.5 * subjects able to understand the informed consent and sign it before enrollment in the study Exclusion Criteria: * personal history of cardiovascular disease or equivalent risk factors * obesity (BMI ≥ 30 kg/m²) * taking hypoglycemic drugs or supplements that affect glycemic metabolism * diabetes mellitus or IGT * pregnancy or breastfeeding * known thyroid, liver, kidney or muscle diseases * any medical or surgical condition that makes patient compliance with the study protocol complex or inconsistent * any known allergy or hypersensitivity to one or more components of the food supplement