The drug is composed of dried trunk ends, together with the flowers and leaves. The ends are cut when the plant is blooming and are then dried in draughty rooms, in a shadow.
In its composition, it contains ethereal oil, bitter substance – achillein, tannins, choline, vitamin K, organic acids, etc. In general, yarrow is the most famous and most frequently used folk remedy.
It has healing effects on the stomach and bowels, increasing the activity of glands that release stomach juices. It also improves the activity of the liver, gall-bladder and biliary canals. Due to the favorable effects on the gastrointestinal tract, this tea enlivens the reverse-venous flow of blood in the heart, thus accelerating circulation and, in general, functioning of the cardiovascular system.
The Yarrow flower promotes the function of blood-generating organs, thus improving the immunity and strengthening the organism in its combats against many diseases.
Tests have shown that it has significant effect in the treatment of diabetes, especially if the patient is in the initial stadium of the illness.
This herb is a known hemostatic and, consequently, has been indicated in certain types of hemorrhage (in cases of hemorrhoids, large intestine, and menstrual hemorrhage).