Astringent chokeberry fruit is increasingly appearing in Polish homes. They are rich in flavonoids (rutin, quercetin, catechins, anthocyanins and leukocyans), vitamins C, B2, B3, E and folic acid, calcium, iron, copper, molybdenum, manganese iodine and boron, which have a positive effect on the functioning of the immune system, digestive and blood, and also support the treatment of civilization diseases. They are also recommended for people who have vision problems, because the anthocyanins contained in them regenerate the dye on the retina, which affects the quality of vision.