Yellow Dock

At a Glance

Common name

Yellow Dock

Scientific name

Rumex crispus

Family

Polygonaceae

Region

Europe / North America

Plant part

Root

Caffeine

Caffeine Free

Evidence

Insufficient

Safety review

Safety information on file

Botanical Description

A tall perennial with long lanceolate wavy-margined green leaves, a tall stalk of small green-brown flowers turning to rusty-brown seed clusters, and a thick deep taproot; the root is used.

Also known as: Curly Dock, Sour Dock, Narrow Dock

Historical Background

Yellow dock has been a European and Native American folk herb for centuries, its deep taproot brewed into a bitter 'blood-purifying' and liver-support tea. Traditionally associated with gentle iron and skin traditions, it remains a mild, earthy, caffeine-free cup in folk practice.

Earliest recorded uses: European and Native American traditions for centuries; a bitter 'blood-purifying' and liver root.

Traditional Uses

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

Flavor & Aroma

Aroma: Earthy, slightly sour, tannic, dry

Tea Preparation

Modern Evidence

Yellow dock has a tradition as a bitter liver, 'blood-purifying,' and skin root tea; preclinical work shows mild laxative and antioxidant activity. Clinical evidence is insufficient; it is not a treatment for anemia, constipation, skin disease, or any disease, though it remains a gentle, earthy folk cup. Note high oxalate content.

Evidence levels describe the state of research for the traditional use discussed here, not a recommendation. Historical use does not imply effectiveness.