They contain very few sugars, and important amounts of vitamins A and C, calcium, iron and potassium, and other vitamins whose intake is very important in human metabolic processes.

The cranberry stands out for its antioxidant power, which helps to prevent diseases such as cancer and cardiovascular diseases, and its anti-adherent power, which prevents harmful bacteria from adhering to the walls of the gastrointestinal tract, thus preventing urinary tract infections.

The leaves are rich in iron and manganese, as well as organic acids (benzoic, malic, succinic, citric, quinic…). The fruit contains tannins, myrtilin, sugars and pectin. The fruit contains flavonoids. Astringent due to its tannin. Tonic, antiseptic, antidiarrhoeal, hypoglycaemic. It has vitamin P, which is why it is used in circulation problems and vascular affections of the eye. Abuse of its consumption can produce hydroquinone intoxication.