Dried leaf. The fruits and the oil obtained from its seeds are also used.
The European Medicine Agency (EMA) approved the traditional use of leaves for the relief of minor joint pain and to increase urine output for minor urinary disorders.
The ESCOP further specifies use as an adjunct in the treatment of rheumatological conditions.
The fruit is used for capillary fragility, varicose veins, hemorrhoids, phlebitis, retinitis pigmentosa (RP), progressive myopia and arteriosclerosis. The fruits of black currant are used in food and also in the preparation of cassis liqueur.
It can also be used in oil, in cases of high cholesterol for the prevention of atherosclerosis, premenstrual syndrome and menopause.
The leaves are traditionally attributed to anti-inflammatory and diuretic effects. The anti-inflammatory activity is due to flavonoids and above all, the proanthocyanidins they contain.
The fruit is used for its vasoprotective effects. Its sprouts are used as diuretics and antiseptics, mainly due to its essential oil content.
Both fruits and leaves and sprouts have high antioxidant activity.