Curcumin and Resveratrol Together

Quick answer

No source we read names an interaction between curcumin and resveratrol. The one controlled trial that included both gave them in a mix of ten supplements: 100 mg of resveratrol and 900 mg of a curcumin complex a day for 24 weeks. Both are poorly absorbed, and each carries a blood thinner caution.^1,2,3

Key facts

In the one controlled trial that included both, 56 adults took a mix of ten supplements for 24 weeks. No serious adverse events occurred, liver and kidney blood tests were unaffected, and mild gut discomfort affected 19% of participants.¹
Both are poorly absorbed in plain form. At least 70% of a 25 mg resveratrol dose was absorbed, yet only traces of unchanged resveratrol reached the blood, and 2 g of plain curcumin gave undetectable or very low levels.^4,5
At 1 g a day for 4 weeks, resveratrol slowed three liver enzymes that clear many medicines and sped up a fourth in 42 healthy volunteers. Laboratory tests on human liver and gut tissue found that both compounds slowed the breakdown of a test medicine.^6,7
Each has its own blood thinner caution. LiverTox lists a possible interaction for resveratrol, and NIH's breastfeeding database says turmeric may increase bleeding in people taking warfarin or antiplatelet drugs.^2,3
The EU caps synthetic trans-resveratrol in supplements at 150 mg a day for adults. No upper intake level is set for turmeric or curcumin supplements.^8,9

What is known about the two together

No source we read names an interaction between the two. LiverTox's resveratrol summary lists possible interactions with blood thinners and estrogens only, NCCIH's turmeric page does not mention resveratrol, and a PubMed search on 2026-10-07 found no study that gave healthy people the pair on its own.^2,10

The one controlled trial we found that included both lasted 6 months, in 56 healthy adults aged 38 to 55. Volunteers took ten supplements a day, among them 100 mg of resveratrol and 900 mg of a curcumin complex with 5 mg of piperine. Measures of artery stiffness and artery widening did not change, no serious adverse events occurred, and liver and kidney blood tests stayed unaffected. Mild gut discomfort affected 19% of participants, which the authors tied to the number of pills.¹

Because the volunteers took ten products at once, the trial cannot say what the pair did on its own. It was also single-blind with no placebo: the volunteers knew their group, only the technicians who ran the tests did not, and both groups took a daily multivitamin. It is the closest evidence there is, and it is thin.¹

What each has been studied for

Resveratrol's one graded finding is on blood vessel function. Turmeric has two, on muscle soreness after hard exercise and on memory in older adults. All three are graded early, none was tested with the other ingredient, and the ten-supplement trial above found no change in the vessel measures it took.^1,11,12,13

May support normal blood vessel function*^11,14

Early evidence

A 2022 meta-analysis of randomized trials found a small improvement in flow-mediated dilation, a test of how well an artery widens (about 1.4 percentage points); a 2026 umbrella review rated this as moderate-certainty evidence from 8 trials (603 people) that used 30 to 500 mg a day for 1 to 24 weeks. The trials enrolled mixed groups that included people under medical care, none used this product's 600 mg label dose, and the umbrella review saw weaker or less favorable results overall at 500 mg a day or more.

Amount studied: 30 to 500 mg a day for 1 to 24 weeks

May modestly reduce muscle soreness in the days after hard exercise*^12,15,16,17

Early evidence

Three meta-analyses of small randomized trials found lower soreness scores, and lower creatine kinase, a marker of muscle damage, with curcumin than with placebo after hard or unaccustomed exercise. The largest, 14 studies with 349 people, saw the clearest difference 4 days after exercise and with more than a week of use. The pooled differences in soreness were about half a point, and a 2024 meta-analysis of 16 papers found no statistically significant effect at any time point. The trials used many different formulations and doses.

Amount studied: 150 mg to 4 g of curcumin a day in different formulations, from a single dose to several weeks

As absorption-enhanced curcumin, may modestly support working memory and attention in older adults*^{13,18,19,20,21}

Early evidence

Two trials of one solid lipid curcumin product (400 mg a day, 80 mg of curcumin) in 60 and 80 healthy older adults found better working memory than with placebo, one hour after a single dose and after 4 and 12 weeks. An 18-month trial of another enhanced form (90 mg of curcumin twice a day) in 40 adults aged 51 to 84 found better memory and attention scores. Two other trials found little or no difference: 2,000 mg a day of the solid lipid product for 12 weeks in 39 adults, and 1,500 mg a day of a third formulation for 12 months in 96 older adults. All the trials were small, and authors of one positive trial had received funding from the supplement industry.

Amount studied: 80 to 180 mg of curcumin a day in absorption-enhanced forms, from one dose up to 18 months

NIH's LiverTox database says there is no conclusive evidence that resveratrol benefits humans.²

Absorption, forms and timing

At least 70% of a 25 mg dose was absorbed, yet only trace amounts of unchanged resveratrol reached the blood; its sulfate and glucuronide forms reached levels up to about 20 times higher.^4,22

Piperine slows the body's breakdown of curcumin in the gut wall and liver. Taking 20 mg of it with 2 g of curcumin raised bioavailability by 2,000% in healthy volunteers.⁵

Both are sold with absorption add-ons, and neither source says the pair changes the other's blood levels. No study we found measured whether curcumin alters resveratrol levels or the reverse.^4,10

Timing in the studies^{5,13,19,23,24}
	Resveratrol	Curcumin
Peak in the blood	About 30 minutes to 2 hours after a dose	Between 15 minutes and 1 hour with 20 mg of piperine
Effect of food	A high-fat meal moved the peak of a 400 mg dose from 30 minutes to 2 hours	No study found that compared taking it with and without food
Time of day	More reached the blood after morning doses than later ones in 40 healthy adults	No study found that compared morning with evening

Amounts and limits

Limits and studied amounts for adults^{1,8,9,11,12,19,22,25}
	Resveratrol	Turmeric or curcumin
Upper limit	150 mg a day of synthetic trans-resveratrol in supplements (EU)	None set
Amounts in trials	30 to 500 mg a day in the blood vessel trials, with weaker results at 500 mg or more	80 mg of curcumin a day in an absorption-enhanced form, up to 4 g a day
In the ten-supplement trial	100 mg a day	900 mg a day of a curcumin complex
Highest amounts tested in healthy volunteers	5 g a day for 29 days; 2.5 g and 5 g caused gut complaints	Up to 8,000 mg a day for 3 months in early studies, with little or none reaching the blood

What's in ours

None of our products contains turmeric or curcumin, so no overlap note applies. Each capsule of our Resveratrol holds 600 mg of a knotweed root complex that contains 50% trans-resveratrol, and the label directs one capsule twice a day, which is 600 mg of trans-resveratrol daily. The EU cap for supplements is 150 mg, and the artery widening trials used 30 to 500 mg.^8,11,26

Medicines: two sets of cautions

Ask your pharmacist or doctor first

NIH's LiverTox database lists a possible interaction between resveratrol and anticoagulant blood thinners. The warfarin label asks for more frequent INR checks whenever a botanical product is started or stopped, and MedlinePlus says some supplements may raise the risk of bleeding with warfarin.^2,27,28

Expected from how the two work, not shown in studies

Turmeric has its own entry. NIH's breastfeeding database says it may increase the risk of bleeding in people taking warfarin or antiplatelet drugs, and the warfarin label does not name turmeric.^3,29

At 1 g a day for 4 weeks, resveratrol slowed three liver enzymes that clear many medicines (CYP3A4, CYP2D6 and CYP2C9) and sped up a fourth (CYP1A2) in 42 healthy volunteers.⁶

The European Union requires labels of supplements with trans-resveratrol to say that people taking medicines should use them only under medical supervision, because it may interact with specific medicines.⁸

A laboratory study on samples of human liver and gut tissue found that both curcumin and resveratrol slowed the breakdown of one test medicine. It was not a trial in people, but it is one more reason to ask a pharmacist about each of the two if you take a prescription medicine.⁷

Liver and other cautions

In ten US cases, liver injury began 1 to 4 months after starting turmeric. Eight of the ten were women, five needed hospital care and one died of liver failure, and seven carried the gene variant HLA-B*35:01.³⁰

NCCIH advises stopping turmeric or curcumin and talking with a health care provider at any sign of liver damage, such as tiredness, nausea, poor appetite, dark urine or yellowing of the skin or eyes.¹⁰

Slight rises in liver enzymes at 1.5 to 3 g a day that returned to normal after stopping. LiverTox rates resveratrol an unlikely cause of liver injury and reports no published cases of serious liver injury.²

In 40 women past menopause taking 1 g a day for 12 weeks, in a study without a placebo group, six stopped early because of side effects. Diarrhea affected 30%, one woman had a severe rise in liver enzymes without symptoms, and two had severe rashes.³¹

Ask first if you have liver disease, or have had liver problems with any supplement. Turmeric is the most used of six botanicals linked to liver injury in US survey data.^2,10,32
Ask first if you take a blood thinner or have a bleeding disorder, or if you take estrogen or have a hormone-sensitive condition.^2,3
Ask first if you are pregnant, breastfeeding or under 18. NCCIH says turmeric supplements may be unsafe in pregnancy, and the EU authorization for trans-resveratrol covers adults only.^8,10

Questions people ask

Can you take curcumin and resveratrol together?

No source we read says to avoid the pair, and no trial tested it on its own. They were given together only inside a ten-supplement mix in one 24-week trial, at 100 mg of resveratrol and 900 mg of a curcumin complex a day. Both carry medicine cautions, so ask a pharmacist first if you take a prescription medicine.^1,2,3

Do curcumin and resveratrol compete for absorption?

No study we found measured it. What the studies show is that each is changed heavily on the way to the blood: resveratrol appears mostly as sulfate and glucuronide forms, and curcumin from a plain extract was not found in the blood at doses up to 8,000 mg.^4,22,33

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Sources

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

This page is information, not medical advice. Talk to your doctor or pharmacist about your own situation.