Cramp Bark

Identity

Common Name

Cramp Bark

Scientific Name

Viburnum opulus

Botanical Family

Adoxaceae

Native Region

Europe, northern Asia, North America

Cultivation Regions

Europe, North America, northern Asia

Plant Parts Used

Bark

Synonyms

Guelder Rose, High Bush Cranberry, Snowball Tree

Caffeine Level

Caffeine Free

A deciduous shrub with broad three-lobed toothed maple-like leaves, flat clusters of small white flowers ringed by larger sterile outer blooms, and clusters of bright red berries; the grey-brown bark is the part used.

Historical Background

Cramp bark (guelder rose) has been used by Native American peoples and early American Eclectic physicians for centuries for muscle and menstrual comfort. Its grey-brown bark is decocted into a tea traditionally sipped for occasional cramping and tension.

Earliest recorded uses: Native American and early American Eclectic medicine for centuries; named for its traditional use for muscle and menstrual cramping.

Traditional Uses

These uses document historical traditions and do not imply proven effectiveness.

Flavor & Aroma

Aroma: Earthy, slightly bitter, woody

Tea Information

Research Summary

Cramp bark has a tradition for muscle and menstrual comfort. Clinical evidence is insufficient; preclinical work suggests possible smooth-muscle relaxant activity, but it is not a treatment for dysmenorrhea, muscle spasm, or any condition, and should be discussed with a clinician.

Evidence levels reflect the currently available scientific literature and may change as new research emerges. Where evidence is limited or conflicting, this is stated plainly.

References & Sources