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White Willow Bark (Salix alba)
Natural source of salicin (aspirin precursor) with evidence for pain relief and inflammation — gentler on the stomach than aspirin.
What the evidence says
White Willow Bark appears to help in 4 of 4 studies with measurable effects — the evidence leans clearly favourable.
Most evidence is from high-quality meta-analyses and randomised trials published 2001–2026 with a typical study size of 100 participants.
Based on 20 studies · 1 meta-analysis · 3 RCTs · 1,771 total participants
Confidence
ModerateWhat the studies found
By outcome
White Willow Bark has an evidence score of 6/10 — moderate evidence based on 20 indexed studies, including 1 meta-analysis. Natural source of salicin (aspirin precursor) with evidence for pain relief and inflammation — gentler on the stomach than aspirin.
The commonly studied dose of White Willow Bark is 120-240mg salicin daily (from standardized extract). Research points to an estimated optimal dose around 240mg salicin, with a minimum effective dose near 120mg salicin. Individual response varies — start low and adjust.
The best time to take White Willow Bark is with meals. Take it with food. White willow bark (Salix alba) contains salicin, which is converted to salicylic acid by intestinal bacteria and liver enzymes.
Collagen
Likely helpsHydrolyzed peptides that rebuild skin elasticity, reduce joint pain, and strengthen bone density — results build over 8-12 weeks.
MSM
Mostly mechanism / observationalOrganic sulfur donor for connective tissue repair — reduces joint inflammation and supports post-exercise recovery and flexibility.
Last reviewed May 2026 · evidence from 26 studies · how we score
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
White Willow Bark contains salicin, which the body converts to salicylic acid — the compound that inspired aspirin. Used for thousands of years for pain and fever, modern research supports its use for low back pain, osteoarthritis, and headaches. Generally gentler on the stomach than aspirin due to slower conversion and presence of other protective compounds.
Reduces prostaglandin production
Contains flavonoids with antioxidant properties
How White Willow Bark works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
120-240mg salicin daily (from standardized extract)
Take with food
| Form | Type |
|---|---|
| 💊Standardized extract (15% salicin) | Recommended |
| 💊Dried bark | Alternative |
| 💧Tincture | Alternative |
Standardized extracts ensure consistent salicin content. 800mg of 15% extract = 120mg salicin.
Minimum: 2 weeks
Optimal: 4 weeks
Cycling: Not required
Note: Taking with food reduces GI irritation. Split into 2-3 doses.
Based on Cochrane review showing dose-response relationship with 240mg more effective than 120mg. Studies limited to 6 weeks duration. Requires salicin-standardized extract.
Reduced chronic pain
Improved low back pain
Avoid — salicylates linked to Reye's syndrome in viral illness
Avoid — same concerns as aspirin
Additive antiplatelet effects
Increased GI and bleeding risk
May increase methotrexate levels
Tip: Take with food
Tip: Avoid if aspirin-allergic
White Willow Bark is generally safe at recommended doses, with a few precautions worth noting. The most commonly reported side effects are GI upset, allergic reaction. Use caution if any of these apply to you: Aspirin allergy; Children with viral illness (Reye's syndrome risk); Bleeding disorders.
Chondroitin
Probably helpsHelps cartilage retain water and resist compression — may slow cartilage loss and reduce osteoarthritis pain, especially with glucosamine.
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