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White Willow at a Glance
Salix alba is a willow in the Salicaceae family. Bark from several willow species has a long history in traditional pain and fever preparations.
Salicin and Aspirin
Willow bark contains salicin and related salicylates that can be metabolized into salicylic-acid-related compounds. Whole willow bark is not chemically identical to aspirin and should not be described simply as “natural aspirin.”
Traditional Use
Willow bark has been used historically for pain, fever and musculoskeletal discomfort. Modern studies of standardized willow-bark extracts suggest modest benefit for some pain conditions, but product and dose matter.
Safety
People with aspirin or salicylate allergy should avoid willow bark. Caution is appropriate with anticoagulant or antiplatelet medicines and in people with bleeding disorders or active ulcers. Children and teenagers with viral illnesses should not use salicylate-containing products because of concern about Reye syndrome. Medicinal use during pregnancy is generally avoided unless specifically advised by a clinician.
Folklore
Willow has long been associated with water, flexibility, grief, healing and moon symbolism in European folklore.
Bottom Line
Willow bark has a genuine salicylate chemistry and some modern pain research, but aspirin allergy, bleeding and pediatric cautions are important. For educational purposes only.