Silverweed (Potentilla anserina) is a traditional European herb rich in condensed tannins, flavonoids, and bitter principles. It is historically known as a highly effective antispasmodic and astringent. Silverweed acts directly on smooth muscles to relieve cramp-like pain in the pelvis and abdomen, while its abundant tannins precipitate proteins to form a protective, drying barrier over irritated mucous membranes.
Educational information only — never stop or change a prescribed medication without talking to your prescriber first.
Generally exceptionally safe. High tannin content can cause mild stomach upset in individuals with sensitive stomachs if taken on an empty stomach. Avoid during pregnancy.
Evidence level: Moderate
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