White Willow Bark (Salix alba)

Dried bark of Salix alba, White Willow, the original natural source of the salicin compound from which aspirin was eventually synthesized. White Willow bark has over 3,500 years of recorded medicinal use, with documentation in ancient Egyptian, Greek (Hippocrates), and traditional European herbalism. The bark contains salicin, which the body converts to salicylic acid - the parent compound of acetylsalicylic acid (aspirin).

Key Facts

Botanical name

Salix alba

Family

Salicaceae

Common names

White Willow, European Willow

Active compound

Salicin (converted to salicylic acid in the body)

Historical significance

The traditional herb that led to the synthesis of aspirin (1897)

Modern relation to aspirin

Aspirin (acetylsalicylic acid) is the synthesized derivative; willow contains the natural precursor

What is White Willow?

White Willow is a large European tree growing along rivers and damp areas. The bark has been used medicinally for over 3,500 years - Egyptian papyri document willow bark use, Hippocrates wrote about willow bark for pain and fever, and Native American peoples independently discovered the medicinal properties of related Salix species. In the 1820s, French and German pharmacists isolated the active compound salicin from willow bark; in 1897, German chemist Felix Hoffmann at Bayer synthesized acetylsalicylic acid - aspirin - using salicylic acid as the starting point.

How to Use White Willow Bark

Decoction: simmer 1 teaspoon of bark in 8 oz water for 15-20 minutes; strain. The flavor is bitter and astringent. Tincture: alcohol extracts the salicin compounds. Capsules: encapsulated bark for measured dosing. Typical use is short-term for traditional pain support, not daily long-term use.

Safety Information

The same precautions that apply to aspirin generally apply to willow bark, though willow bark is gentler. Not recommended for children (Reye's syndrome concern with salicylates), individuals on blood thinners, individuals with aspirin allergies, or during pregnancy. Consult a healthcare provider.

Frequently Asked Questions

Is White Willow bark the same as aspirin?
Related but not identical. Willow contains salicin (which the body converts to salicylic acid); aspirin is acetylsalicylic acid, a synthesized derivative.

Did aspirin really come from willow?
Yes; salicin was isolated from willow bark in the 1820s, and aspirin was synthesized from salicylic acid by Bayer in 1897.

How long has willow bark been used?
Over 3,500 years; documented in ancient Egyptian papyri, Hippocrates' writings, and many other traditions.

Can I take willow bark if I'm allergic to aspirin?
No; the salicylate cross-reactivity makes willow bark inappropriate for aspirin-allergic individuals.

Is willow bark safe for children?
No; the Reye's syndrome concern that applies to aspirin also applies to willow bark.

How does willow bark compare to aspirin in strength?
Gentler and slower-acting; the natural compound has different pharmacokinetics than the synthesized derivative.

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.