Contemporary medical herbalists believe that silverweed's main medicinal value lies in its astringency. It is less astringent than the related P. erecta, but it has a gentler action within the gastro-intestinal tract. The whole plant is antispasmodic, mildly astringent, diuretic, foot care, haemostatic, odontalgic and tonic. A strong infusion is used to check the bleeding of piles and to treat diarrhoea, it is also used as a gargle for sore throats. Externally, it is used as a powder to treat ulcers and haemorrhoids whilst the whole bruised plant, placed over a painful area, will act as a local analgesic. The roots are the most astringent part of the plant, they are harvested in late summer or autumn and dried for later use. The leaves are harvested in early summer and dried for later use. The German Commission E Monographs, a therapeutic guide to herbal medicine, approve Potentilla anserina Silverweed for diarrhoea, inflammation of the mouth and pharynx, premenstrual syndrome Source: https://pfaf.org/
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