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Head-to-head evidence comparison — which supplement is right for you?
White Willow Bark wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Mostly mechanism / observational
Top outcomes
Verdict
Likely helps
4 of 4 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both Devil's Claw and White Willow Bark have evidence — compare verdict strength side-by-side.
Standardized extract providing 50-100mg harpagoside daily (≈600-2400mg extract)
with-meals
Harpagoside-standardized extract
120-240mg salicin daily (from standardized extract)
With meals, Divided doses
Standardized extract (15% salicin)
2-8 weeks
2-8 weeks
Days
1-2 weeks
1-4 weeks
Harpgophytum procumbens for osteoarthritis and low back pain: a systematic review.
BMC complementary and alternative medicine (2004) · Systematic review
Twelve trials reviewed across OA and low-back pain
Herbal Medicine for Low Back Pain: A Cochrane Review.
Spine (2016) · Systematic review
14 RCTs (2050 participants) of herbal medicines for low-back pain
Herbal medicine for low-back pain.
The Cochrane database of systematic reviews (2014) · Systematic review
Devil's claw standardized to 50-100mg harpagoside may beat placebo short-term
Efficacy and Safety of White Willow Bark (Salix alba) Extracts
Phytotherapy research : PTR (2015) · Systematic review
In recent years, various in vitro and animal studies have demonstrated that the anti-inflammatory activity of willow bark extract is associated with down regulation of the inflammatory mediators tumor necrosis factor-α and nuclear factor-kappa B.
A systematic review on the effectiveness of willow bark for musculoskeletal pain
Phytotherapy research : PTR (2009) · Systematic review
All studies investigated ethanolic extracts with daily doses up to 240 mg salicin over periods of up to six weeks.
Cochrane review: Herbal therapy for low back pain
Cochrane Database of Systematic Reviews (2006) · Systematic review · n=500
Moderate evidence of efficacy
Based on Cochrane review showing dose-response relationship with 240mg more effective than 120mg. Studies limited to 6 weeks duration. Requires salicin-standardized extract.
AI-estimated from published studies. Interpret as directional guidance.
White Willow Bark has a higher evidence score (6/10 vs 5.5/10) and wins in 2 of 3 categories.
For joint health & mobility, White Willow Bark has a higher relevance score (88 vs 65).
No known interactions between Devil's Claw and White Willow Bark have been documented in our database. However, always consult a healthcare provider before combining supplements.