What is White Willow Bark Extract?

White Willow Bark Extract comes from Salix alba bark and contains salicin, which the body can convert into salicylic acid. It is traditionally used for mild pain, inflammation, and fever.

How does White Willow Bark Extract compare to aspirin?

Both are related to salicylates and can have similar pain- and inflammation-relieving effects. Because of this, White Willow Bark Extract may share some of aspirin’s side effects and interaction risks.

What is a typical dose of White Willow Bark Extract?

Common supplemental amounts are often in the range of 120–240 mg per day, depending on product standardization and individual needs. Follow the label and consult a clinician if you use other medications.

Who should avoid White Willow Bark Extract?

People with salicylate sensitivity, a history of stomach ulcers or bleeding, or those taking blood thinners should use caution or avoid it. It may also be inappropriate for children and during pregnancy or breastfeeding unless advised by a clinician.

What medications can interact with White Willow Bark Extract?

It may increase bleeding risk when combined with anticoagulants or antiplatelet drugs and may add to the effects of NSAIDs. Check with a healthcare professional before combining it with pain relievers or blood-thinning medications.

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White Willow
Bark Extract

Moderate study situation·7/10

A higher score indicates better study conditions, but not necessarily effectiveness.

Traditional herbal extract for mild pain and inflammation, providing a natural salicin source similar to aspirin.

Anti-inflammatory Joint Healt Migraine Support

dose range

120–240 mg

Divided into two daily doses with meals.

Consumption

Take standardized extract with food to lessen gastrointestinal side effects. Dosages should be based on standardized salicin content (typically 15–20%).

Not fat-soluble.

Best time

Take with meals; avoid use around the clock to reduce GI risk.

Description

White willow bark extract, sourced from the Salix alba tree, contains salicin, a precursor to salicylic acid, and is used as a natural remedy for pain, inflammation, and fever. Its effects are similar to aspirin but may pose similar side effect risks and drug interactions.

benefits

Main effects with level of evidence

Moderate

Note on evidence

Moderate evidence supports efficacy in musculoskeletal pain and osteoarthritis; potential risks necessitate caution.

Mild Pain Relief

Moderate

Reduces symptoms in acute and chronic low back pain, with some studies showing effects comparable to low-dose NSAIDs.

Particularly relevant for: Adults with mild musculoskeletal pain · People seeking natural alternatives to NSAIDs

S3 · PubMed: Efficacy of willow bark for musculoskeletal pain S6 · Examine.com: Willow Bark

Improved Joint Comfort in Osteoarthritis

Moderate

White willow bark extract may ease pain and improve function in osteoarthritis of the knee and hip, based on systematic reviews and RCTs.

Particularly relevant for: Adults with osteoarthritis

S4 · PubMed: Efficacy of willow bark in osteoarthritis

Supports Mild Headache Relief

Limited

Historical and preliminary evidence suggests white willow bark may help relieve mild headaches due to its prostaglandin-inhibiting activity.

Particularly relevant for: Adults with mild tension headaches

S2 · NCCIH: Willow Bark S6 · Examine.com: Willow Bark

Safety & Information

Important safety information & known risks

For educational purposes only • not medical advice

Generally well-tolerated at recommended doses but carries risks similar to aspirin, including GI side effects and increased bleeding risk, particularly in sensitive populations.

warning notices

Can cause gastrointestinal upset, nausea, or allergic reactions, especially in those sensitive to aspirin.
Increases bleeding risk especially when combined with other blood-thinning drugs or in those with bleeding disorders.
Contraindicated in children under 16, pregnancy, and breastfeeding due to Reye's syndrome and lack of safety data.
Avoid use if allergic to aspirin or salicylates.
Do not use if pregnant, breastfeeding, or in children under 16 due to Reye's syndrome risk.
Avoid with anticoagulants, antiplatelet drugs, or bleeding disorders due to increased risk of bleeding.
Do not combine with other NSAIDs or aspirin to reduce risk of additive gastrointestinal or bleeding complications.
Avoid use with active peptic ulcer disease or uncontrolled hypertension.

Known interactions with medications

Anticoagulants (warfarin, heparin)
NSAIDs and aspirin
Antiplatelet agents (clopidogrel, ticagrelor)

Contraindications / special precautions

Allergy to aspirin or salicylates
Pregnancy
Breastfeeding
Children under age 16
Active peptic ulcer or GI bleeding
Severe renal or hepatic impairment

interactions

Important interactions between active ingredient ↔ supplement / medication / food

White willow bark can interact with anticoagulants, NSAIDs, and other drugs or herbs with antiplatelet or anticoagulant effects, increasing bleeding risk. It may also have additive GI side effects with similar agents.

Avoid combining with anticoagulants due to increased bleeding risk.

drug · Anticoagulants (e.g., warfarin)

AvoidStrong

Why

Salicin and its metabolites inhibit platelet aggregation, increasing bleeding in combination with other anticoagulants.

recommendation

Do not take together.

S1 · WebMD: Willow Bark S2 · NCCIH: Willow Bark S5 · Office of Dietary Supplements (NIH): Willow Bark S7 · Drugs.com: Willow Bark

Avoid combining with NSAIDs or aspirin to reduce additive GI and bleeding risks.

drug · Nonsteroidal anti-inflammatory drugs (NSAIDs, including aspirin)

AvoidStrong

Why

Both agents can cause GI irritation and impair platelet function, increasing the risk of ulcers and bleeding.

recommendation

Do not combine routinely; seek medical advice if combined short-term.

S1 · WebMD: Willow Bark S2 · NCCIH: Willow Bark S5 · Office of Dietary Supplements (NIH): Willow Bark S7 · Drugs.com: Willow Bark

Should not be used with bleeding disorders or active peptic ulcer disease.

lifestyle · Bleeding disorders or peptic ulcer disease

AvoidStrong

Why

Salicin may worsen bleeding or ulcer risk.

recommendation

Avoid use.

S2 · NCCIH: Willow Bark S5 · Office of Dietary Supplements (NIH): Willow Bark

mechanisms of action

Brief explanations of how it works

Inhibition of Prostaglandin Synthesis

Salicin is converted in the body to salicylic acid, which inhibits cyclooxygenase (COX) enzymes, reducing prostaglandin-mediated pain and inflammation.

S4 · PubMed: Efficacy of willow bark in osteoarthritis S6 · Examine.com: Willow Bark