Shepherd's purse is an effective diuretic and astringent used for nosebleed, water retention, and diarrhea. It is famous for checking excessive menstrual flow or postpartum bleeding. When used as a hemostatic, the fresh tincture should be taken every hour or two. The herb loses its potency rapidly, and a good-quality "fresh-plant" tincture should be stored in a cool place out of the direct sunlight. It will retain its potency for 6-9 months. In Europe, shepherd's purse tincture is being recommended for lowering mild high blood pressure.