Stack Genius ingredient guide
White Willow
Bark of Salix alba and related willow species, standardized to salicin — a natural precursor to salicylic acid — used traditionally for pain and inflammation.
What is White Willow?
White willow is the common name for Salix alba and several related willow species whose bark contains salicin. Salicin is metabolized in the body into salicylic acid, the same molecule that gave aspirin its name and much of its early history. That connection makes willow bark a genuinely drug-like herb rather than a purely nutritional one.
In supplements, white willow shows up as capsules of standardized extract and as an ingredient in pain, joint, and back-support formulas. Standardization is typically expressed as a percentage of salicin, and typical products deliver anywhere from 120 mg to 240 mg of salicin per day.
Because willow bark converts into salicylic acid inside the body, its effects and interactions overlap meaningfully with aspirin and other salicylate drugs. That is important context whenever it is taken alongside prescription medications or over-the-counter pain relievers.
Why people look up White Willow
- White willow bark contains salicin, which converts to salicylic acid in the body.
- It is used for pain, joint discomfort, and mild inflammation.
- Its aspirin-like activity brings real drug-like interactions and cautions.
Common forms and label context
Specific product labels may use form, extract, strain, or blend language around White Willow. The safest comparison starts with the Supplement Facts panel and the full ingredient list.
Practical guidance
What to know before adding White Willow
Evidence snapshot
Human trials of standardized willow bark extract have shown modest short-term benefits for lower back pain and joint discomfort, especially at higher salicin doses. Effects are generally slower and gentler than aspirin, and the herb is often used as a milder alternative.
What to look for on the label
Look for the species (Salix alba is standard), the plant part (bark), and — most importantly — the salicin content per serving. Products that list only milligrams of extract without a salicin percentage give little dose information. Combination pain formulas should list willow's salicin dose separately.
What makes a better product
Better products state salicin content in milligrams per serving and deliver a clinically relevant dose. Because willow tastes intensely bitter, capsules are usually more practical than loose bark. Sourcing information about the Salix species used adds transparency.
Watch-outs
White willow shares many of aspirin's interaction risks: it can thin blood, irritate the stomach, and interact with NSAIDs, anticoagulants, methotrexate, and diabetes medications. It should not be given to children with fever because of a theoretical Reye syndrome risk. People allergic to aspirin should avoid it.
Dosing & Timing
Common adult doses in trials provide 120 mg to 240 mg of salicin per day, split into one or two servings and taken with food to reduce stomach irritation. Effects on chronic pain typically build over one to two weeks rather than kicking in immediately.
Safety and interaction context
White willow is a salicylate source, so contraindications track closely with aspirin: bleeding disorders, upcoming surgery, active ulcer disease, and aspirin allergy. It should not be used in children or adolescents with viral illness because of Reye syndrome risk. Pregnancy and breastfeeding are reasons to avoid it as well.
How to track White Willow in Stack Genius
Track the exact product, serving size, timing, and reason you added it. That makes it easier to review whether White Willow appears once, shows up across multiple products, or belongs in a routine you still want to keep.
White Willow FAQ
What is White Willow?
Bark of Salix alba and related willow species, standardized to salicin — a natural precursor to salicylic acid — used traditionally for pain and inflammation.
Why do people track White Willow in supplements?
People track White Willow to understand where it appears across supplement labels, blends, and daily routines. Stack Genius helps keep that product and ingredient context organized.
What type of supplement ingredient is White Willow?
White Willow is grouped under Specialty Compounds & Other Dietary Ingredients in the Stack Genius ingredient library. Category context can help compare related ingredients, but the product label still matters most.
Sources
- NCCIH herbs overviewConsumer framing for common herbs.
- MedlinePlus dietary supplementsConsumer safety framing.
- NCCIH supplements wiselyGeneral framework for pharmacologically active herbs.
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