No nutritive properties, but vitamins and minerals make aronia (black chokeberry) berries valuable. Black chokeberry is a leader among natural sources of vitamin P (rutin), it contains 20 times much vitamin P than citrus fruit have. High content of vitamin P helps improve the elasticity of blood vessels. If the body bruises from the slightest touch, the reason most likely lies in the deficiency of vitamin P. Red eyes, increased capillary fragility may indicate the presence of petechia (increased fragility of blood vessels). Such conditions are treated with drugs with a high dose of rutin. Aronia is also rich in vitamin C, which has a significant impact on blood vessel elasticity. Thus, it has a double effect; it reduces their fragility and increases their elasticity.Up to 40 mg % of iodine (in dry pulp without seeds) were found in the fruit pulp. Aronia is the only berry that contains such amounts of iodine. Black chokeberry can accumulate therapeutic iodine. Berries contain almost all group of vitamins B. Thanks to the large amount of pectic substances, which serve as cleaners for the whole organism, remove heavy metals, products of degradation of radioactive elements. It is also useful to improve the nervous system functioning. It regulates the excitation and inhibition centers in the cerebral cortex. Therefore, it is prescribed for increased excitability, including insomnia. Aronia fruit are also a source of flavonoids and glycosides. They have antispasmodic, hypotensive, capillary attifying, diuretic, choleretic, anti-sclerotic properties.