Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Cramp Bark (Viburnum opulus) has a long history of traditional use as a remedy for menstrual cramps and other muscle spasms. Native American and European herbalists have employed cramp bark for centuries to alleviate uterine cramping, dysmenorrhea, and general muscle tension. The name "cramp bark" itself reflects this ethnobotanical use. The traditional application usually involves preparing the bark as a tea, tincture, or extract.

Phytochemical analysis shows that cramp bark contains compounds such as viburnin, coumarins, and flavonoids, which are thought to have muscle-relaxant and antispasmodic properties. However, while these constituents suggest a possible mechanism, robust clinical evidence supporting the efficacy of cramp bark for menstrual cramps is lacking. There are no large, high-quality human trials establishing its effectiveness, and references in scientific literature are limited and typically cite historical or anecdotal use rather than controlled studies.

In summary, the use of cramp bark for menstrual cramps is primarily justified by historical and traditional use, with limited scientific validation. While some preliminary evidence and plausible mechanisms exist, the strength of evidence supporting its use for this indication is weak.

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