5 g (1 tablespoon) of elderberry black flowers are placed in enamel ware, 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 infusion obtained is adjusted to 200 ml with boiled water.
Take inside in a warm form for 1/3 cup 2-3 times a day.
Before use, the infusion is recommended to be shaken.