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Curcumin (Turmeric Extract)
Turmeric's active compound that modulates NF-kB inflammatory pathways — supports mood, joint health, and post-exercise recovery.
What the evidence says
Curcumin appears to help in 4 of 5 studies with measurable effects — the evidence leans clearly favourable.
Most evidence is from high-quality meta-analyses and randomised trials published 1980–2027 with a typical study size of 101 participants.
Based on 820 studies · 168 meta-analyses · 437 RCTs · 25,803 total participants
Confidence
High confidenceWhat the studies found
By outcome
Numerous meta-analyses of RCTs consistently show curcumin reduces inflammatory markers, osteoarthritis pain, and glycemic indices, but poor bioavailability, dosing heterogeneity, and some null findings keep it short of top-tier.
434 randomised trials
90% were about Curcumin in an audit of 50 of them
Every randomised or controlled trial of Curcumin indexed in PubMed, not a hand-picked subset. Meta-analyses and systematic reviews are deliberately excluded from this count: most of them cover many compounds at once, so counting them would inflate it.
PubMed · as of Sep 2026
56 trials ongoing or recruiting · 223 completed on ClinicalTrials.gov
33 of the completed trials have posted results
Registered trials show research momentum for Curcumin, not proof of effect — a registration is a plan, and posted results are sponsor-reported, not peer-reviewed. They are never counted toward the evidence rating above.
Browse these trials on ClinicalTrials.govClinicalTrials.gov · as of Oct 2026
Curcumin is the primary active compound in turmeric, with potent anti-inflammatory and antioxidant effects. Standard curcumin is very poorly absorbed (<1%), and enhanced-absorption products raise blood levels, but liver-injury risk may be higher with them.
Recent meta-analyses show benefits for inflammation, mood, and recovery.
Blocks the master inflammatory pathway
Reduces inflammatory prostaglandins
Neutralizes free radicals and oxidative stress
How Curcumin 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.
Avoid — High concentrations may stimulate uterine contractions and affect blood clotting
Because of possible blood-thinning effects, tell the surgical team you take it and follow its plan for stopping and restarting.
May increase bleeding risk
May enhance blood sugar lowering
May reduce iron absorption
Tip: Take with food; reduce dose
Tip: Reduce dose
Tip: Stop the supplement and seek medical assessment for jaundice, dark urine, persistent nausea, unusual fatigue or upper abdominal pain. Known from case reports, so its frequency is not established: 10 cases in the US Drug-Induced Liver Injury Network (5 hospitalised, 1 death from liver failure, PMID 36252717) and 7 Tuscan cases plus 23 published reports (PMID 32656820). Risk may be higher with enhanced-absorption products.
Curcumin has an evidence score of 7.5/10 — strong evidence based on 819 indexed studies, including 23 meta-analyses. Turmeric's active compound that modulates NF-kB inflammatory pathways — supports mood, joint health, and post-exercise recovery. Representative study: PMID 40806131.
The commonly studied dose of Curcumin is 500-1000mg daily (enhanced form). Individual needs vary — start at the lower end of the range and adjust based on how you respond.
The best time to take Curcumin is with meals. Take it with food. Curcumin is a lipophilic polyphenol from turmeric with notoriously poor native bioavailability (<1% absorption).
Curcumin has a safety rating of "moderate". That is a category, not a measure of individual risk, and there are precautions worth knowing. Reported side effects include liver injury (hepatitis), GI upset, headache. How often they occur is not established for all of them. Use caution if any of these apply to you: Gallbladder disease; Bleeding disorders; Scheduled surgery (tell the surgical team you take it and follow its plan for stopping and restarting).
Magnesium
Mixed evidenceSupports 300+ enzymatic reactions — critical for sleep, stress response, muscle function, and cognitive health.
Saffron
Likely helpsBeat placebo for depression in meta-analyses, and small trials found no significant difference versus SSRIs, which does not show equal effect. Also studied for anxiety and PMS symptoms.
Omega-3
Probably helpsEssential fatty acids critical for brain health, mood regulation, and reducing inflammation throughout the body.
NAC
Likely helpsRate-limiting precursor to glutathione, the body's master antioxidant — supports mood, respiratory health, and liver protection.
What Actually Works vs What’s Hype
The honest tier list — proven staples vs situational vs mostly marketing. The hub the other guides feed into.
Joint Pain & Osteoarthritis
Curcumin, omega-3, UC-II collagen, Boswellia vs the old glucosamine default — and OA vs RA.
Supplement Timing & Combining
When to take what, with or without food, and which supplements compete vs pair well.
Explore: Best supplements for Vitality & LongevityBest supplements for Focus, Memory & MoodBest supplements for Athletic PerformanceBest supplements for Body HealthBest supplements for Women's Health
Reviewed by Dr. Baher Al Hakim · Last reviewed May 2026 · evidence from 821 studies · how we score · editorial policy
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.
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