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Head-to-head evidence comparison — which supplement is right for you?
Curcumin wins 1 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
8 of 10 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
3 of 4 studies with measurable effects showed benefit.
Top outcomes
500-1000mg daily (enhanced form)
With fatty meal
Enhanced absorption form: Longvida, Meriva, or BCM-95
100-200mg
Morning with coffee for focus, Evening for relaxation, As needed for stress
Suntheanine® capsules or powder
4-8 weeks
4-8 weeks
4-8 weeks
Immediate
30-60 minutes
30-60 minutes
30-60 minutes
Varies
Comparative Effectiveness of Nutritional Supplements in the Treatment of Knee Osteoarthritis: A Network Meta-Analysis
Nutrients (2025) · Meta analysis · n=4599
Bayesian rankings indicated Boswellia had the highest probability of being most effective for pain and stiffness, with krill oil and curcumin showing potential for function improvement.
Curcumin on Human Health: A Comprehensive Systematic Review and Meta-Analysis of 103 Randomized Controlled Trials
Phytotherapy research : PTR (2024) · Meta analysis · n=7216
We meta-analyzed the effect sizes across eligible studies using the random-effects model.
Comparative efficacy and tolerability of nutraceuticals for depressive disorder: A systematic review and network meta-analysis
Psychological medicine (2025) · Meta analysis · n=17437
Adjunctive nutraceuticals consistently showed better efficacy than antidepressants (ADT) alone in outcomes including SMD, remission, and response.
The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis
Sleep medicine reviews (2025) · Meta analysis · n=897
The findings indicate the potential use of L-theanine in the management of sleep disturbances; however, the lack of studies on "pure" L-theanine warrants further investigation.
Efficiency of Different Supplements in Alleviating Symptoms of ADHD with or Without the Use of Stimulants: A Systematic Review
Nutrients (2025) · Systematic review
The evidence revealed the potential use of supplements as complementary ADHD treatments under clinical guidance.
Analysis of the Effects of Known Sleep-Support Supplements in Relation to Life Habits, Sleep Conditions, and Sleep Problems
Nutrients (2023) · Rct · n=160
All the tested supplements were found to ameliorate sleep problems significantly (Analysis 1).
Based on meta-analyses of arthritis and osteoarthritis studies. Effectiveness varies significantly by curcumin form - enhanced bioavailability formulations may show greater effects at lower doses. Limited high-quality RCTs available.
Meta-analysis (n=897) and multiple RCTs support sleep benefits. Studies often used L-theanine in combination with other compounds, limiting pure L-theanine effect attribution. Effects include reduced sleep onset latency and improved subjective sleep quality.
AI-estimated from published studies. Interpret as directional guidance.
Curcumin has a higher evidence score (9/10 vs 9/10) and wins in 1 of 3 categories.
For reduce anxiety & stress, L-Theanine has a higher relevance score (85 vs 60).
No known interactions between Curcumin and L-Theanine have been documented in our database. However, always consult a healthcare provider before combining supplements.