The medicinal raw material is primarily the leaves, but also the birch tumor and the sap of the birch trunk and branches. Birch leaves have a diuretic, diaphoretic, anti-rheumatic effect, improve metabolism, and detoxify the circulatory system. Birch leaf extract is used in chronic urinary tract infections. Fresh leaf juice, collected in the spring, stimulates kidney filtration and increases the excretion of harmful waste products. It improves the filtration capacity of the kidneys, stimulates urine excretion and washes out "sand", preventing the formation of urinary stones. Birch leaves are also used in some skin diseases, e.g. psoriasis, seborrhea. They are also used in hair care.

Contraindications: Hypersensitivity to birch pollen or birch leaves. Conditions where fluid intake is reduced (e.g. in severe heart or kidney disease).

Dosage, method of use and route of administration: Adults and the elderly: 1 tablespoon (3 g) of birch leaves, pour 1 glass (250 ml) of boiling water, infuse under cover
15 minutes. Set aside for 10 minutes and strain. Drink a glass of infusion 1 - 3 times a day. The maximum daily dose is 12 g of birch leaves, which corresponds to 4 cups of infusion.