Stinging Nettle

At a Glance

Common name

Stinging Nettle

Scientific name

Urtica dioica

Family

Urticaceae

Region

Europe

Plant part

Leaves, Roots, Seeds

Caffeine

Caffeine Free

Evidence

Moderate

Safety review

Safety information on file

Botanical Description

A perennial herb growing 1–2 m tall with opposite, heart-shaped, deeply serrated leaves covered in stinging trichomes that inject histamine and formic acid on contact. Greenish flowers hang in long axillary clusters; the plant spreads by creeping rhizomes.

Also known as: Common Nettle, Great Nettle

Historical Background

Stinging nettle has been gathered as food, fiber, and medicine across Eurasia for millennia. The Greek physician Dioscorides documented its uses in the 1st century CE, and throughout medieval Europe it served as a spring 'blood-cleansing' tonic. The root gained attention in 20th-century European phytotherapy for urinary complaints associated with an aging prostate.

Earliest recorded uses: Dioscorides' De Materia Medica (1st century CE); later in the Anglo-Saxon Lacnunga and medieval European herbals as a diuretic and joint remedy.

Cultural significance: Nettle fiber yielded cloth and rope before flax became dominant; the plant was also a famine food and a source of green dye. In European folklore, stinging oneself with nettles was believed to ward off illness and keep blood moving — a folk ritual recorded into the 19th century.

1. 1st c. CE

   Dioscorides describes nettle in De Materia Medica.

2. Medieval

   Used across Europe as a spring tonic and fiber crop.

3. 20th c.

   Root preparations adopted in German phytotherapy for prostate-related urinary symptoms.

Traditional Uses

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

Flavor & Aroma

Aroma: Fresh, green, faintly grassy

Tea Preparation

Modern Evidence

Stinging nettle root has been studied for urinary symptoms associated with benign prostatic hyperplasia (BPH). A Cochrane review found limited, low-quality evidence that root extracts may modestly improve lower urinary tract symptoms compared with placebo, though findings are inconsistent and not equivalent to prescription medication. The leaf has been studied mainly for its nutritional content and possible anti-inflammatory effects; evidence for specific health outcomes remains limited. Nettle is not a treatment for prostate cancer.

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