White Willow Bark

At a Glance

Common name

White Willow Bark

Scientific name

Salix alba

Family

Salicaceae

Region

Europe / Asia

Plant part

Bark (dried inner bark)

Caffeine

Caffeine Free

Evidence

Moderate

Safety review

Safety information on file

Botanical Description

A deciduous tree with narrow lanceolate finely serrated silvery-green leaves and deeply furrowed gray-brown bark; the dried inner bark is used.

Also known as: Salix, Willow Bark, European Willow

Historical Background

White willow bark has been a pain and fever remedy since ancient Egypt and Greece, its salicin-rich bark the natural blueprint for modern aspirin. Sipped as a decoction for centuries, it remains one of the best-evidenced herbal pain traditions, with a clear pharmacological basis.

Earliest recorded uses: Egyptian, Greek, and European traditions for millennia; the original source of salicin, the blueprint for aspirin.

Traditional Uses

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

Flavor & Aroma

Aroma: Earthy, slightly bitter, woody, astringent

Tea Preparation

Modern Evidence

White willow bark has moderate evidence for low-back and joint pain, owing to salicin (a salicylate prodrug); it is not a substitute for medical pain care and carries salicylate-type risks. It is not a treatment for fever, headache, or any disease, though its pain tradition is among the best-supported in herbalism.

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