About 10 grams (1 tablespoon) of kidney birch are placed in enameled pots, pour 200 ml (1 glass) of hot boiled water, cover with a lid and heat in a boiling water bath for 15 minutes, cool at room temperature for 45 minutes, filter, the remaining raw material is squeezed. The volume of the obtained infusion is brought to boiling water up to 200 ml.
Take inside 1-2 tablespoons 3 times a day for 30 minutes before eating.
The course of treatment is 2-3 weeks.
Before use, the infusion is recommended to be shaken.