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Head-to-head evidence comparison — which supplement is right for you?
SAMe and White Willow Bark are closely matched across evidence, studies, and safety.
Verdict
Mixed evidence
1 of 3 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
4 of 4 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both SAMe and White Willow Bark have evidence — compare verdict strength side-by-side.
400-1600mg for mood; 600-1200mg for joints
On empty stomach, Morning and/or midday
Enteric-coated tablets (SAMe tosylate or butanedisulfonate)
120-240mg salicin daily (from standardized extract)
With meals, Divided doses
Standardized extract (15% salicin)
2-6 weeks
4-8 weeks
4-8 weeks
1-2 weeks
1-4 weeks
S-Adenosylmethionine for osteoarthritis of the knee or hip
The Cochrane database of systematic reviews (2009) · Meta analysis · n=656
For pain, the analysis indicated a small SMD of -0.17 (95% CI -0.34 to 0.01), corresponding to a difference in pain scores between SAMe and placebo of 0.4 cm on a 10 cm VAS, with no between trial heterogeneity (I(2) = 0).
Efficacy of Pharmacological Interventions in Milder Depression: A Systematic Review and Meta-Analysis
Neuropsychopharmacology reports (2025) · Meta analysis · n=1049
A meta-analysis found no significant difference in response rates between the two treatments (risk ratio [RR] = 0.96, 95% CI: 0.78-1.18) or dropout rates (RR = 1.08, 95% CI: 0.62-1.88).
S-Adenosylmethionine (SAMe) for Liver Health: A Systematic Review
Nutrients (2024) · Systematic review · n=15
The most common doses were SAMe 1000 mg or 1200 mg per day with or without another treatment or natural supplement.
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
Meta-analysis of 656 patients showed small effect size (SMD -0.17) corresponding to only 0.4cm improvement on 10cm pain scale. Effect is modest and barely reaches statistical significance threshold.
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.
Both SAMe and White Willow Bark are closely matched — the best choice depends on your specific health goals.
For joint health & mobility, White Willow Bark has a higher relevance score (88 vs 62).
No known interactions between SAMe and White Willow Bark have been documented in our database. However, always consult a healthcare provider before combining supplements.