Anserina, also known as Potentilla anserina or silverweed, has been traditionally used in European herbal medicine to support women's reproductive health, including the prevention of miscarriage and the management of various gynecological complaints. The primary traditional rationale for its use revolves around its reputed antispasmodic and astringent properties, particularly its ability to relieve uterine cramps and excessive menstrual bleeding. These properties were believed to help stabilize the uterus and prevent involuntary contractions that could contribute to miscarriage.

Historical sources, such as those from 19th and early 20th-century European herbalists, often recommend Anserina preparations (teas or tinctures) for "threatened miscarriage," menstrual cramps, and other reproductive system disturbances. However, modern scientific research validating these effects is very limited. Some phytochemical studies indicate that the herb contains tannins, flavonoids, and other compounds with potential smooth muscle relaxant and anti-inflammatory effects, which may provide a plausible mechanism for its traditional use. However, no robust clinical studies have directly evaluated its efficacy or safety in miscarriage prevention in humans.

In summary, Anserina's use for miscarriage prevention is primarily based on longstanding traditional European herbal practices, with minimal supporting scientific evidence and no modern clinical validation.