Blueberry leaves (Vaccinium myrtillus) are recognized for their ability to decrease blood glucose levels, making them a valuable resource for diabetics. Historically used in infusions, they provide a natural alternative to complement treatment, although prolonged use should be approached with caution, as it could irritate the liver. Among their properties are astringent and antidiarrheal effects, as well as the ability to combat urinary infections. Additionally, the infusions of these leaves, due to their antioxidant compounds, may contribute to delaying skin aging.