Cramp Bark (Viburnum opulus)

Dried bark of Viburnum opulus, traditionally called Cramp Bark for its long-documented use as an antispasmodic herb in Western herbalism. The bark of this shrub has a centuries-long tradition of use particularly in connection with muscular cramping and menstrual discomfort.

Key Facts

Botanical name

Viburnum opulus

Family

Adoxaceae (formerly Caprifoliaceae)

Common names

Cramp Bark, Guelder Rose, European Cranberry Bush, Snowball Tree

Native region

Europe, Northern Africa, Central Asia, naturalized in North America

Studied compounds

Iridoid glycosides, scopoletin, viopudial

Traditional use

Antispasmodic for muscular cramping

What is Cramp Bark?

Viburnum opulus is a deciduous shrub native to Europe and parts of Asia, recognized for its showy white flower clusters and bright red berries. The bark is harvested, dried, and cut for herbal use. The plant has been used in Western herbalism for several centuries, with the common name "Cramp Bark" reflecting its primary traditional indication.

How to Use Cramp Bark

The most common preparation is a decoction (simmered tea): simmer 1-2 teaspoons of dried bark per cup in water for 15-20 minutes, then strain. Cramp Bark is often used in tincture form for more measured dosing.

Frequently Asked Questions

What is Cramp Bark used for?
Traditionally as an antispasmodic for muscular cramping, particularly menstrual cramping.

What's the difference between Cramp Bark and Black Haw?
Both are Viburnum species with overlapping traditional use. Black Haw (V. prunifolium) is a related species; Cramp Bark (V. opulus) is the more widely available.

How do you prepare Cramp Bark?
As a decoction (simmered tea) or tincture. Bark requires longer extraction than leafy material.

Is Cramp Bark safe during pregnancy?
Cramp Bark has been used historically in connection with pregnancy and post-partum support in some traditional protocols; consult a healthcare provider before any use during pregnancy.

What does Cramp Bark taste like?
Astringent and slightly bitter, characteristic of bark preparations.

How long does dried Cramp Bark stay fresh?
Stored sealed in a cool, dry, dark place, dried bark retains quality for several years.

This product has not been approved by the Food and Drug Administration and is not intended to diagnose, treat, cure, or prevent any disease. We recommend that you consult with a qualified healthcare practitioner before using any herbal products, particularly if you are pregnant, nursing, or on any medications.