Compound
    Moderate Evidence

    Curcumin

    Curcumin

    TL;DR

    Curcumin is the main active compound in turmeric and a genuine anti-inflammatory, with the best evidence in knee osteoarthritis where it performs comparably to NSAIDs over 8-12 weeks. Plain turmeric powder is almost useless orally — absorption is the whole problem, so the formulation matters more than the dose.

    Ideal For

    • People with knee or hand osteoarthritis who tolerate NSAIDs poorly
    • Those with elevated CRP or a chronic low-grade inflammatory picture
    • People with exercise-induced muscle soreness and stiffness
    • Ulcerative colitis patients seeking an adjunct, with specialist input
    • Anyone wanting an anti-inflammatory with a gentler gastric profile than NSAIDs

    Avoid If

    • You take warfarin or another anticoagulant without clinician oversight
    • You have gallstones or a bile duct obstruction
    • You have active liver disease or unexplained raised liver enzymes
    • You have iron-deficiency anaemia — curcumin chelates iron
    • You are within two weeks of scheduled surgery
    • You are pregnant, at doses above culinary amounts

    Frequently Asked Questions

    Overview

    Curcumin is the most-studied of the curcuminoids in turmeric root, and it has an unusual reputation problem: it is simultaneously over-hyped in popular health writing and genuinely effective for a narrower set of things than the hype claims.

    The pharmacology starts with a serious obstacle. Native curcumin is poorly soluble, rapidly conjugated in the gut wall and liver, and cleared quickly — oral bioavailability of unformulated curcumin is close to negligible. This makes the delivery system the single most important variable. Piperine from black pepper raises bioavailability substantially by inhibiting glucuronidation; phytosome, micellar, nanoparticle and gamma-cyclodextrin formulations achieve multiples of that. Comparing a 500 mg dose of one formulation with 500 mg of another is close to meaningless, which is a large part of why the literature looks inconsistent.

    Where the evidence is strongest is knee osteoarthritis. Multiple randomised trials and several meta-analyses show pain and function improvements broadly comparable to ibuprofen or diclofenac over 8-12 weeks, with markedly fewer gastrointestinal adverse events. That is a real and clinically useful result.

    Beyond that: reasonable evidence for reducing systemic inflammatory markers such as CRP and IL-6, mixed but encouraging evidence in ulcerative colitis maintenance as an adjunct to mesalamine, and preliminary evidence for depression and metabolic markers. Cancer claims, which drive much of the online interest, rest on preclinical work that has not translated into human outcome trials.

    Curcumin has also become one of the more common causes of supplement-associated liver injury reported to national registries — a rare event, but concentrated in high-bioavailability formulations, which is a reminder that improving absorption changes the risk profile too.

    How It Works

    • Inhibits NF-kB signalling, reducing transcription of downstream inflammatory mediators including TNF-alpha, IL-1beta and IL-6.
    • Suppresses COX-2 and 5-LOX activity, giving a mechanism partly overlapping with NSAIDs but without the same gastric prostaglandin cost.
    • Activates Nrf2, upregulating endogenous antioxidant enzymes such as glutathione S-transferase and heme oxygenase-1.
    • Modulates the gut microbiome and intestinal barrier function, which may account for effects seen despite low systemic exposure.
    • Undergoes rapid intestinal and hepatic glucuronidation and sulfation — the reason piperine, which inhibits glucuronidation, raises plasma levels several-fold.
    • Chelates metal ions and inhibits platelet aggregation in vitro, which underlies the bleeding-risk caution with anticoagulants.

    Quick Facts

    • Active compound extracted from turmeric root
    • Potent anti-inflammatory and antioxidant properties
    • May support joint health and cognitive function
    • Poor bioavailability unless formulated with enhancers
    • Extensively studied with over 3000 published papers

    Benefits & Outcomes

    Exercise-Induced Inflammation Reduction

    Immune
    Likely effective
    Moderate Evidence
    Effectiveness 3/5

    Reasonable evidence for soreness reduction; bioavailability is the deciding factor.

    Amyloid Plaque Prevention

    Cognitive
    Insufficient evidence
    Preliminary

    Strong preclinical anti-amyloid data has not translated into convincing human outcomes.

    Autoimmune Modulation

    Immune
    Likely effective
    Moderate Evidence

    Curcumin reduces inflammatory symptoms in rheumatoid arthritis and ulcerative colitis.

    Back Pain Relief

    Pain
    Mixed evidence
    Limited

    Curcumin matches low-dose NSAID effects in some musculoskeletal pain trials; back-specific data are limited.

    Cytokine Balance

    Immune
    Likely effective
    Moderate Evidence
    Effectiveness 3/5

    Curcumin lowers CRP and IL-6 in trials, but only in bioavailability-enhanced formulations.

    Inflammaging Reduction

    Longevity
    Likely effective
    Moderate Evidence

    Curcumin lowers CRP and IL-6 in adults with elevated baseline inflammation.

    Prostate Health

    Mens Health
    Insufficient evidence
    Limited

    Curcumin has interesting anti-inflammatory prostate data but no clinical outcome evidence.

    Brain Inflammation Reduction

    Immune
    Mixed evidence
    Preliminary

    Strong anti-inflammatory mechanism, limited by poor brain penetration.

    Tendon Strength

    Performance
    Insufficient evidence
    Limited

    Curcumin may reduce tendon pain through anti-inflammatory effects without improving structure.

    Menstrual Cramp Relief

    Womens Health
    Moderate Evidence

    Curcumin reduced dysmenorrhea pain in small RCTs and shows strong evidence for pre-menstrual symptom relief; anti-inflammatory action aligns with the prostaglandin mechanism of cramping.

    mTOR Regulation

    Longevity
    Moderate Evidence

    Curcumin modulates mTOR and NF-kB signaling with solid anti-inflammatory human evidence, though mTOR-specific human outcomes have not been measured.

    Pain Relief

    Pain
    Likely effective
    Moderate Evidence

    Curcumin gives modest but real relief in inflammatory and osteoarthritic pain, with better GI tolerability than NSAIDs.

    Platelet Aggregation Reduction

    Cardiovascular
    Insufficient evidence
    Limited

    Curcumin has mild antiplatelet activity in vitro that matters mostly as a perioperative and drug-interaction caution.

    Post-Exercise Soreness Reduction

    Performance
    Likely effective
    Moderate Evidence

    Curcumin modestly reduces soreness and speeds strength recovery after damaging exercise.

    Tumor Response Rate

    Oncological
    Insufficient evidence
    Limited

    Curcumin has preclinical anticancer signals and no demonstrated effect on tumour response.

    Antioxidant Protection

    Longevity
    Likely effective
    Moderate Evidence
    Effectiveness 3/5

    Good mechanistic support; form selection (with piperine or liposomal) is make-or-break.

    Joint Comfort

    Bone and Joint
    Likely effective
    Moderate Evidence

    Bioavailable curcumin reduces knee osteoarthritis pain with efficacy approaching NSAIDs in several head-to-head trials and better GI tolerability.

    Health Concerns Addressed

    Chronic Pain

    symptom
    Mixed evidence
    Effectiveness 3/5

    NSAID-comparable in knee osteoarthritis trials; much weaker beyond it. A reasonable adjunct, never the whole strategy.

    Ulcerative Colitis

    condition
    Likely effective
    Moderate Evidence
    Effectiveness 3/5

    Worth discussing as an add-on to mesalazine in mild to moderate disease. Evidence is add-on only — it has never been tested as monotherapy against standard care.

    Inflammatory Bowel Disease

    condition
    Likely effective
    Moderate Evidence
    Effectiveness 3/5

    Curcumin added to mesalazine roughly tripled clinical remission rates in mild-to-moderate ulcerative colitis in randomised trials.

    Neck Pain & Stiffness

    symptom
    Mixed evidence
    Moderate Evidence
    Effectiveness 2/5

    Curcumin has real trial evidence for joint pain — but from knee osteoarthritis studies, not neck pain, where no direct trials exist. It is a reasonable adjunct for chronic neck discomfort, while movement, heat, and posture correction remain the proven interventions.

    Bursitis

    condition
    Mixed evidence
    Effectiveness 2/5

    Plausible adjunct extrapolated from arthritis data; no direct bursitis trials. Fix the mechanical trigger first.

    Traumatic Brain Injury

    condition
    Insufficient evidence
    Preliminary
    Effectiveness 2/5

    Insufficient evidence. Preclinical anti-inflammatory findings with no human TBI data and a major bioavailability barrier.

    TMJ Disorder

    condition
    Mixed evidence
    Preliminary
    Effectiveness 2/5

    Small trials suggest analgesia comparable to non-steroidal anti-inflammatories for jaw pain, with limited sample sizes.

    Plantar Fasciitis

    condition
    Mixed evidence
    Moderate Evidence
    Effectiveness 2/5

    Curcumin has solid general anti-inflammatory evidence and may ease plantar fasciitis discomfort as an adjunct — but this condition is overload-and-degeneration more than inflammation, which is why stretching and progressive loading outperform anything swallowed.

    Ankylosing Spondylitis

    condition
    Mixed evidence
    Preliminary
    Effectiveness 2/5

    Mechanistically sensible and probably safe, but the spondylitis-specific trial base is nearly empty; do not let it displace treatment that preserves spinal mobility.

    Herniated Disc

    condition
    Mixed evidence
    Moderate Evidence
    Effectiveness 2/5

    Curcumin may modestly ease the inflammatory component of radicular pain as an adjunct during the acute phase. Evidence comes mainly from general back pain and osteoarthritis trials, not herniated disc specifically — and it does not influence the disc's reabsorption or the need for activity-based treatment.

    Shoulder Pain

    symptom
    Mixed evidence
    Moderate Evidence
    Effectiveness 2/5

    A reasonable NSAID-sparing option for pain relief while you do the loading programme, particularly where the shoulder is arthritic rather than tendinopathic.

    Chronic Kidney Disease

    condition
    Insufficient evidence
    Limited
    Effectiveness 1/5

    Not established. Discuss with your kidney team before use — supplement safety assumptions do not transfer to reduced clearance.

    Cancer

    condition
    Insufficient evidence
    Effectiveness 1/5

    A preclinical story that has not translated; disclose it to your oncology team.

    Chronic Inflammation

    symptom
    Likely effective
    Moderate Evidence
    Effectiveness 3/5

    Curcumin reliably lowers CRP and IL-6 in people who start with them raised. Whether that translates into better long-term outcomes is untested, so treat it as a marker-moving intervention rather than a proven disease preventer.

    Knee Pain

    symptom
    Mixed evidence
    Moderate Evidence
    Effectiveness 3/5

    A reasonable option for knee osteoarthritis pain if NSAIDs are unsuitable. Use a bioavailability-enhanced formulation and treat it as symptom relief.

    Rheumatoid Arthritis

    condition
    Mixed evidence
    Preliminary
    Effectiveness 2/5

    A reasonable adjunct for symptom relief if tolerated. The trials are too small to support it as anything more.

    Chronic Back Pain

    symptom
    Mixed evidence
    Limited
    Effectiveness 2/5

    Curcumin shows modest analgesic effect in musculoskeletal pain trials, mostly in knee osteoarthritis, with little data specific to chronic back pain.

    Joint Pain

    symptom
    Strong yes
    Strong Evidence
    Effectiveness 4/5

    One of the best-supported supplements for any indication. Over 8-12 weeks, bioavailable curcumin has matched ibuprofen and diclofenac for knee osteoarthritis pain in head-to-head trials, with far fewer gastrointestinal problems. The formulation is what decides whether it works.

    Chronic Muscle Soreness

    symptom
    Likely effective
    Moderate Evidence
    Effectiveness 3/5

    Reasonable evidence that curcumin reduces delayed-onset muscle soreness and speeds recovery of strength after hard training. The effect is modest and clearest in the 24-72 hour window after unaccustomed eccentric work.

    Endometriosis

    condition
    Mixed evidence
    Effectiveness 2/5

    Consistent anti-inflammatory activity in endometriosis models and small human pilot work, but no adequately powered trial has shown reduced pain or lesion burden.

    Supporting Research
    42 studies

    Curcumin: A Review of Its Effects on Human Health

    Score: 4/10
    2017

    Hewlings SJ, Kalman DS

    Review of curcumin trials reports anti-inflammatory and antioxidant effects with signals of benefit in osteoarthritis, metabolic syndrome, hyperlipidaemia, anxiety and exercise-induced muscle soreness. Native curcumin has very poor oral bioavailability; piperine or lipid/phytosome formulations raise absorption substantially.

    View source

    Curcumin for the treatment of major depression: a randomised, double-blind, placebo controlled study

    Score: 6/10
    2014
    rct
    n=56

    Lopresti AL, Hood SD, Drummond PD

    Curcumin and placebo were comparable through week 4, after which curcumin produced significantly greater improvement in mood, particularly in atypical depression

    View source

    Memory and Brain Amyloid and Tau Effects of a Bioavailable Form of Curcumin in Non-Demented Adults: A Double-Blind, Placebo-Controlled 18-Month Trial

    Score: 6/10
    2018
    rct
    n=40

    Small GW, Siddarth P, Li Z

    Curcumin improved verbal and visual memory and attention and was associated with lower amyloid and tau PET signal in the amygdala and hypothalamus

    View source

    Curcumin and inflammation: a systematic review

    Score: 8/10
    2017
    systematic_review
    0

    Hewlings, S.J., Kalman, D.S.

    Curcumin potently inhibits NF-κB activation and inflammatory cytokine production Reduces pro-inflammatory markers (TNF-α, IL-1β, IL-6, IL-8) in multiple studies Antioxidant effects complement anti-inflammatory actions Effective across various inflammatory conditions (arthritis, metabolic syndrome, IBD) Dose-response relationship observed: higher doses (1000-2000mg) more effective Bioavailability is major limitation - enhanced formulations needed Safety profile excellent with minimal adverse effe

    View source

    Efficacy of Turmeric Extracts and Curcumin for Alleviating the Symptoms of Joint Arthritis: A Systematic Review and Meta-Analysis of Randomized Clinical Trials

    Score: 8/10
    2016
    meta_analysis

    Daily JW, Yang M, Park S

    Turmeric extracts around 1000 mg/day of curcumin significantly reduced pain and improved function versus placebo, with effects comparable to NSAIDs.

    View source

    Antioxidant and anti-inflammatory effects of curcumin/turmeric supplementation in adults: A GRADE-assessed systematic review and dose-response meta-analysis

    Score: 8/10
    2023
    meta_analysis

    Turmeric/curcumin supplementation might be used as a viable intervention for improving inflammatory/oxidative status.

    View source

    Efficacy and safety of curcumin therapy for knee osteoarthritis: a Bayesian network meta-analysis

    Score: 8/10
    2024
    meta_analysis

    Zhao J, Liang G, Zhou G +2 more

    To evaluate the efficacy and safety of curcumin, both alone and in combination with other drugs, in KOA treatment through a Bayesian network meta-analysis (NMA).

    View source

    The efficacy of high- and low-dose curcumin in knee osteoarthritis: a systematic review and meta-analysis

    Score: 8/10
    2021
    meta_analysis
    n=1258

    Hsiao AF, et al.

    The results of our meta-analysis suggest that low- and high-dose curcuminoids have similar pain relief effects and AEs in knee OA.

    View source

    Antioxidant and anti-inflammatory effects of curcuminoid-piperine combination in subjects with metabolic syndrome: A randomized controlled trial and an updated meta-analysis

    Score: 7/10
    2015
    rct
    n=117

    Panahi Y, Hosseini MS, Khalili N

    Curcuminoid therapy significantly reduced circulating concentrations of C-reactive protein.

    View source

    Evaluation of curcumin intake in reducing exercise-induced muscle damage in athletes: a systematic review

    Score: 7/10
    2024
    systematic_review

    Daniel Vasile PR, et al

    Curcumin demonstrates a significant potential to relieve muscle-related symptoms, especially delayed-onset muscle soreness (DOMS) that arises from eccentric exercises.

    View source

    Effect of a herbal extract containing curcumin and piperine on midazolam, flurbiprofen and paracetamol (acetaminophen) pharmacokinetics in healthy volunteers

    Score: 7/10
    2013
    rct
    n=8

    Volak LP, Hanley MJ, Masse G +1 more

    Compared with placebo, the curcuminoid/piperine preparation had no clinically important effect on midazolam or flurbiprofen pharmacokinetics.

    View source

    The effect of curcumin supplementation on delayed-onset muscle soreness, inflammation, muscle strength, and joint flexibility: A systematic review and dose-response meta-analysis of randomized controlled trials

    Score: 8/10
    2022
    meta_analysis

    Curcumin supplementation improved range of motion and reduced muscle soreness and creatine kinase after damaging exercise.

    View source

    Phase I clinical trial of oral curcumin: biomarkers of systemic activity and compliance

    Score: 6/10
    2004
    observational
    n=15

    Sharma RA, Euden SA, Platton SL +1 more

    Its efficacy appears to be related to induction of glutathione S-transferase enzymes, inhibition of prostaglandin E(2) (PGE(2)) production, or suppression of oxidative DNA adduct (M(1)G) formation.

    View source

    Curcumin supplementation and oxidative stress: a systematic review and meta-analysis of randomized controlled trials

    Score: 7/10
    2015
    meta_analysis

    Sahebkar A, Serban MC, Ursoniu S +1 more

    Curcumin increased antioxidant enzyme activity and reduced circulating lipid peroxides

    View source

    Effects of curcumin supplementation on delayed onset muscle soreness: a systematic review and meta-analysis

    Score: 6/10
    2021
    meta_analysis
    n=400

    Fang W, Nasir Y

    Curcumin reduced muscle soreness and creatine kinase levels versus placebo.

    View source

    The efficacy and acceptability of curcumin for the treatment of depression or depressive symptoms: A systematic review and meta-analysis

    Score: 6/10
    2021
    meta_analysis
    n=594

    Wang Z, et al

    The evidence quality is low, indicating that there is great uncertainty about the efficacy and acceptability of curcumin for the treatment of depression or depressive symptoms.

    View source

    Curcumin supplementation alleviates hepatic fat content associated with modulation of gut microbiota-dependent bile acid metabolism

    Score: 7/10
    2024
    rct

    Curcumin reduced hepatic fat content and altered gut microbiota-dependent bile acid metabolism.

    View source

    Co-analgesic therapy for arthroscopic supraspinatus tendon repair pain using a dietary supplement containing Boswellia serrata and Curcuma longa: a prospective randomized placebo-controlled study

    Score: 6/10
    2015
    rct

    Merolla G

    The dietary supplement containing Boswellia serrata and Curcuma longa alleviated short and partially mid-term pain after supraspinatus tendon repair.

    View source

    Impact of Supplementation with Curcuminoids on Systemic Inflammation in Patients with Knee Osteoarthritis: Findings from a Randomized Double-Blind Placebo-Controlled Trial

    Score: 5/10
    2015
    rct
    n=40

    Rahimnia AR, et al

    Significant improvement in clinical symptoms of OA in curcuminoid-treated subjects cannot be attributed to the systemic anti-inflammatory effects of these phytochemicals.

    View source

    Curcumin and cognition: a randomised, placebo-controlled, double-blind study of community-dwelling older adults

    Score: 6/10
    2016
    rct

    Curcumin produced small acute and chronic improvements in working memory and mood in healthy older adults.

    View source

    Clinical usefulness of oral supplementation with alpha-lipoic acid, curcumin phytosome, and B-group vitamins in patients with carpal tunnel syndrome undergoing surgical treatment

    Score: 5/10
    2014
    rct
    n=180

    Pajardi G, Bortot P, Ponti V

    Curcumin phytosome within a combination regimen improved post-surgical carpal tunnel recovery scores.

    View source

    Efficacy and safety of Curcuma domestica extracts compared with ibuprofen in patients with knee osteoarthritis: a multicenter study

    Score: 8/10
    2014
    rct
    n=367

    Kuptniratsaikul V, Dajpratham P, Taechaarpornkul W +6 more

    Curcuma domestica extract was non-inferior to ibuprofen for pain, stiffness and function, with fewer abdominal adverse events.

    View source

    Nutritional Interventions in Adult Patients With Irritable Bowel Syndrome: An Umbrella Review of Systematic Reviews and Meta-analyses of Randomized Clinical Trials

    Score: 8/10
    2025
    systematic_review

    Zeraattalab-Motlagh S, Ranjbar M, Mohammadi H +1 more

    soluble fiber, peppermint oil, and aloe vera improved IBS symptoms, and vitamin D3 and curcumin improved IBS symptom severity

    View source

    Dietary supplements for treating osteoarthritis: a systematic review and meta-analysis

    Score: 9/10
    2018
    meta_analysis

    Liu X, Machado GC, Eyles JP +2 more

    Of 20 supplements investigated in 69 eligible studies, 7 (collagen hydrolysate, passion fruit peel extract, Curcuma longa extract, Boswellia serrata extract, curcumin, pycnogenol and L-carnitine) demonstrated large (effect size >0.80) and clinically important effects for pain reduction at short term.

    View source

    Curcumin supplementation likely attenuates delayed onset muscle soreness (DOMS)

    Score: 6/10
    2015
    crossover
    n=17

    Nicol LM, et al

    Oral curcumin likely reduces pain associated with DOMS with some evidence for enhanced recovery of muscle performance.

    View source

    Effects of different natural products in patients with non-alcoholic fatty liver disease - A network meta-analysis of randomized controlled trials

    Score: 7/10
    2024
    meta_analysis
    n=2509

    Liu H, Li Y, Jin Y +1 more

    The results of the network meta-analysis showed that artichoke leaf extract confers a relative advantage in reducing the aspartate aminotransferase (AST) levels (SUCRA: 99.1%), alanine aminotransferase (ALT) levels (SUCRA: 88.2%)

    View source

    Oral supplementation of turmeric decreases proteinuria, hematuria, and systolic blood pressure in patients suffering from relapsing or refractory lupus nephritis: a randomized and placebo-controlled study

    Score: 6/10
    2012
    rct
    n=24

    Khajehdehi P, et al

    Short-term turmeric supplementation can decrease proteinuria, hematuria, and systolic blood pressure in patients suffering from relapsing or refractory lupus nephritis.

    View source

    Therapeutic effects of turmeric or curcumin extract on pain and function for individuals with knee osteoarthritis: a systematic review

    Score: 8/10
    2021
    systematic_review

    Paultre K, Cade W, Hernandez D +3 more

    Most trials reported significant improvement in knee osteoarthritis pain and function with turmeric/curcumin versus placebo.

    View source

    Curcumin modulates macrophage polarization and inflammatory response: a systematic review of human trials

    Score: 7/10
    2021
    systematic_review

    Gorabi AM, Razi B, Aslani S +2 more

    Curcumin significantly lowered circulating TNF-alpha, IL-6 and CRP

    View source

    Curcumin and proton pump inhibitors for functional dyspepsia: a randomised, double blind controlled trial

    Score: 7/10
    2023
    rct
    n=206

    Kongkam P, Khongkha W, Lopimpisuth C +1 more

    Significant improvements were

    View source

    Efficacy and safety of curcumin and its combination with boswellic acid in osteoarthritis: a comparative, randomized, double-blind, placebo-controlled study

    Score: 6/10
    2018n=201

    Haroyan A, Mukuchyan V, Mkrtchyan N +5 more

    Curcumin and its combination with boswellic acid improved osteoarthritis symptoms versus placebo.

    View source

    Curcuminoids and Boswellia serrata extracts combination decreases tendinopathy symptoms

    Score: 5/10
    2021
    observational
    n=670

    Henrotin Y, et al.

    The combination of C. longa and B. serrata extracts improves symptoms in patients suffering of tendinopathy and shows a good safety. Although its effect will have to be confirmed in randomized controlled trials.

    View source

    Effects of curcumin supplementation on sport and physical exercise: a systematic review

    Score: 7/10
    2021
    systematic_review

    Suhett LG, de Miranda Monteiro Santos R, Silveira BKS +4 more

    Curcumin reduced markers of inflammation, oxidative stress and muscle damage and lessened delayed-onset muscle soreness.

    View source

    Clinical Use of Curcumin in Depression: A Meta-Analysis

    Score: 7/10
    2017
    meta_analysis
    n=377

    Ng QX, Koh SSH, Chan HW +1 more

    Curcumin significantly reduced depression severity versus placebo, with a smaller reduction in anxiety symptoms.

    View source

    Investigation of the anti-inflammatory effect of Curcuma longa in Helicobacter pylori-infected patients.

    Score: 5/10
    2010
    rct

    Koosirirat C, Linpisarn S, Changsom D +1 more

    The eradication rate of H. pylori in patients that received OAM treatment was significantly higher than the patients that received curcumin (78.9% versus 5.9%).

    View source

    Safety and Efficacy of an Add-On Therapy with Curcumin Phytosome and Piperine and/or Lipoic Acid in Subjects with a Diagnosis of Peripheral Neuropathy Treated with Dexibuprofen

    Score: 4/10
    2013
    rct
    n=30

    Di Pierro F, Settembre R

    Safety and efficacy of an add-on therapy with curcumin phytosome and piperine and/or lipoic acid in subjects with a diagnosis of peripheral neuropathy treated with dexibuprofen.

    View source

    The Essential Medicinal Chemistry of Curcumin

    Score: 9/10
    2017
    systematic_review

    Nelson KM, Dahlin JL, Bisson J +3 more

    Curcumin is chemically unstable, poorly absorbed and behaves as a pan-assay interference compound in many in vitro screens.

    View source

    Effect of Curcumin on Serum Urate in Asymptomatic Hyperuricemia: A Randomized Placebo-Controlled Trial

    Score: 6/10
    2020
    rct

    Not fully verified

    Hyperuricemia leads to gout and renal complications and may increase cardiovascular risk. Curcumin inhibits xanthine oxidase and increases uricosuric activity and, as a result, decreases serum urate (SU).

    View source

    Oral curcumin for Alzheimer's disease: tolerability and efficacy in a 24-week randomized, double blind, placebo-controlled study

    Score: 8/10
    2012
    rct
    n=36

    Ringman JM, Frautschy SA, Teng E +16 more

    No differences were found between curcumin and placebo on cognitive or biomarker outcomes; plasma curcumin levels were very low.

    View source

    Curcumin: A Review of Its' Effects on Human Health

    Score: 6/10
    2017

    Hewlings SJ, Kalman DS

    Curcumin and inflammation: systematic review of anti-inflammatory effects in human health.

    View source

    Curcumin as an adjunct in cancer therapy: systematic review of clinical trials

    Score: 5/10
    2020
    systematic_review

    Mansouri K, Rasoulpoor S, Daneshkhah A +5 more

    Curcumin adjuncts were associated with improved treatment tolerance and some improvement in response markers

    View source

    Anti-inflammatory Properties of Curcumin: A Review of the Evidence

    Score: 8/10
    2007
    systematic_review
    0

    Menon VP, Sudheer AR

    Review of the anti-inflammatory properties of curcumin.

    View source

    Safety Information

    Potential Side Effects

    Usually mild: nausea, diarrhoea, reflux and yellow stool, more common at gram-level doses. The notable rare event is hepatotoxicity — curcumin has become one of the more frequently implicated botanicals in drug-induced liver injury registries, with cases clustered in high-bioavailability formulations and sometimes linked to an HLA-B*35:01 genotype. Stop and seek review for dark urine, jaundice or persistent right-upper-quadrant pain.

    Contraindications

    Avoid with gallstones or biliary obstruction, since curcumin stimulates gallbladder contraction. Avoid in active liver disease. Discontinue at least two weeks before surgery because of antiplatelet activity. Medicinal doses are not recommended in pregnancy.

    Drug Interactions

    • Warfarin and direct oral anticoagulants — additive antiplatelet effect; bleeding risk. Requires clinician oversight.
    • Antiplatelet agents including aspirin and clopidogrel — same additive bleeding concern.
    • Piperine-containing products inhibit CYP3A4 and P-glycoprotein, raising levels of many drugs including statins, calcium channel blockers and some immunosuppressants.
    • Antidiabetic medication — curcumin may modestly lower blood glucose; watch for hypoglycaemia in combination.
    • Tacrolimus and other narrow-therapeutic-index drugs — avoid concurrent piperine formulations entirely.
    • Iron supplements — curcumin chelates iron and can reduce absorption; separate them.

    Pregnancy & Breastfeeding

    Pregnancy: likely_safe

    Breastfeeding: likely_safe

    Dosage Guidelines

    Dosage Used in Studies

    500-1000 mg

    Best Time to Take

    With meals

    Best Form

    With piperine or phospholipid complex

    Bioavailability

    Poor natural bioavailability (~1%). Piperine (black pepper extract) increases absorption by 2000%. Phospholipid formulations also improve absorption.

    Dosing by Goal

    GoalDoseNotes
    Knee osteoarthritis500-1000 mg standardised curcuminoids daily, in divided dosesUse a bioavailability-enhanced formulation. Allow 8-12 weeks; most trials showed separation from placebo by week four.
    Systemic inflammation (raised CRP)500-1000 mg daily with piperineMeta-analyses show CRP and IL-6 reductions at this range over 8-12 weeks.
    Ulcerative colitis (adjunct)1-3 g daily alongside mesalamineAdjunctive only, and under gastroenterology supervision — not a replacement for maintenance therapy.
    High-bioavailability formulationsAs low as 40-200 mg dailyMicellar and phytosome products deliver far more curcumin per milligram. Follow the product label rather than the generic gram-level figures.
    Practical ceilingAround 8 g curcuminoids dailyDoses to 8 g have been tolerated in trials, but GI upset is common well below that and there is no benefit signal at the top end.

    Forms Compared

    Curcumin + piperine

    Best for General use, budget

    The classic pairing. Piperine raises bioavailability substantially, but it also inhibits CYP3A4 and can raise levels of other drugs.

    Phytosome (Meriva)

    Best for Osteoarthritis

    Phospholipid complex with roughly 29-fold higher absorption. The form used in several of the positive joint-pain trials.

    Micellar / liquid (NovaSOL)

    Best for Highest absorption

    Very high bioavailability, reported at over 100-fold. Effective doses are correspondingly much smaller.

    Gamma-cyclodextrin (Cavacurmin)

    Best for Piperine-free option

    Good absorption without piperine, which matters if you take medication metabolised by CYP3A4.

    Turmeric powder (culinary)

    Best for Cooking

    Only about 3% curcuminoids and negligible oral absorption. Excellent in food, not a therapeutic dose.

    Food & Timing

    Take with a meal containing fat — curcumin is lipophilic and absorption improves markedly. Splitting the daily amount into two doses maintains steadier plasma levels given the short half-life. If you use a piperine-containing product, keep it at least two hours away from medications with a narrow therapeutic index.

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