Synopsis

Source of validity: Scientific
Rating (out of 5): 2

White willow (Salix alba) bark has a long history of traditional use for pain relief, including headaches, due to its content of salicin, a precursor to salicylic acid (the active metabolite of aspirin). Historically, ancient civilizations such as the Greeks and Native Americans used willow bark infusions to alleviate pain and fevers. The traditional use for headaches is well documented, and scientific interest in willow bark increased after the identification of salicin in the 19th century.

Several modern clinical trials and systematic reviews have investigated the analgesic properties of white willow bark, primarily in the context of lower back pain and osteoarthritis. The evidence for headache relief specifically is much more limited. Mechanistically, the anti-inflammatory and analgesic effects of salicin and related compounds suggest potential for headache relief, particularly for tension-type headaches. However, there are few high-quality, randomized controlled trials that directly assess the efficacy of white willow bark for headaches. Most recommendations for its use in this context are extrapolated from its general analgesic effects.

In summary, while there is solid traditional usage and plausible scientific rationale, the direct scientific evidence for using white willow bark to treat or prevent general headaches is limited, warranting a moderate evidence rating. Individuals considering willow bark should be aware of potential side effects, such as gastrointestinal upset or allergic reactions, especially in those sensitive to aspirin.

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Other ingredients used for Headache (general)

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Products containing white willow

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Nature's Sunshine Nervous System (30 Day Program)
Nature's Sunshine Structural System (30 Day Program)