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Moderate evidenceJoints & skin

Curcumin (Turmeric extract)

The active compound in turmeric, with anti-inflammatory action. Decent evidence for joint pain relief; absorption is the main practical hurdle.

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What the science says

  • Relief of osteoarthritis joint pain Moderate evidence

    A meta-analysis of randomized trials found ~1,000 mg/day of curcumin reduced arthritis pain significantly versus placebo, with some trials showing effects comparable to NSAIDs — though studies are short and mostly small.

  • General anti-inflammatory and antioxidant effects Limited evidence

    Curcumin lowers some inflammatory markers in trials, but plain curcumin is very poorly absorbed — benefits depend on enhanced formulations (with piperine or phospholipids), and long-term clinical outcomes are unproven.

Dosage & safety

Studied dose500–1,000 mg/day of curcuminoids in a bioavailability-enhanced formulation (with piperine, phytosome, or micellar forms).
SafetyGenerally well tolerated; can cause GI upset. Caution with gallstones and blood thinners. Rare liver toxicity reports with high-dose enhanced formulations.

How to take it

TimingTiming does not matter; split doses through the day if you take the higher end of the range.
With food?With a meal containing fat — curcumin is fat-soluble and absorption without one is poor.
Worth knowingRead the label for milligrams of curcuminoids, not turmeric: plain turmeric powder is about 3% curcuminoids and barely absorbed.

Interactions

With medications

  • warfarin, DOACs and antiplatelet drugs

    Curcumin has antiplatelet activity and case reports describe raised INR on warfarin. do not combine without medical supervision; stop 2 weeks before surgery

  • narrow-therapeutic-index drugs, especially with piperine-containing formulas

    Piperine inhibits drug metabolism and transport, raising blood levels of drugs such as phenytoin, propranolol, theophylline and tacrolimus. choose a piperine-free formulation, or check with your pharmacist before combining

  • chemotherapy and tamoxifen

    Curcumin affects the CYP enzymes and transporters several cancer drugs depend on, in both directions. do not use during cancer treatment without your oncologist's agreement

  • insulin and other antidiabetic drugs

    Modest additive glucose lowering. monitor blood glucose when starting

With other supplements

  • iron

    Curcumin chelates iron and can worsen iron status in people who are already marginal. separate from iron supplements and avoid high doses if you are iron deficient

Well-established interactions only — this is not a complete list. Always tell your doctor and pharmacist what you take.

Frequently asked questions

Does curcumin work for joint pain?

The evidence for curcumin in osteoarthritis pain is moderate: a meta-analysis found about 1,000 mg/day reduced pain versus placebo, with some trials comparable to NSAIDs. The curcumin studies are short and mostly small.

Is taking turmeric the same as taking curcumin?

No. Turmeric powder is about 3% curcuminoids and barely absorbed, so look for 500–1,000 mg/day of curcuminoids in an enhanced curcumin formulation, such as with piperine or a phytosome.

Should curcumin be taken with food?

Yes, take curcumin with a meal containing fat. Curcumin is fat-soluble and absorbs poorly without it.

Is curcumin safe with blood thinners?

Not without medical supervision. Curcumin has antiplatelet activity and has raised INR on warfarin in case reports; stop curcumin 2 weeks before surgery.

Scientific references

Where to buy

NatureWise, Organic Turmeric Curcumin, 180 Vegan Capsules

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