Guide
Milk thistle and turmeric
Milk thistle and turmeric are commonly paired for liver-related reasons, but only two small human studies have tested anything close to the combination, and they don't agree — a small pilot study reported improvements, while a larger, better-controlled trial found no difference from placebo.
Milk thistle and turmeric are commonly paired for liver-related reasons, but only two small human studies have tested anything close to the combination — and they don't agree. A small pilot study reported improvements; a larger, better-controlled trial found no meaningful difference from placebo.
What is milk thistle and turmeric?
They're two separate plant-derived supplement ingredients, each with its own research base: milk thistle's seed compound, silymarin, studied mainly in people with a diagnosed liver or kidney condition, and turmeric's compound curcumin, studied across a much wider range of topics. Products pairing the two — often marketed together as "liver support" — exist, but selling them together in one bottle isn't the same as testing the pairing in a trial.
The closest research that exists
A small 4-week study gave curcumin and silymarin, individually and in combination, to 15 people with a diagnosed liver condition, and reported improvements in liver-enzyme and lipid markers, most notably with the two combined. That result is worth knowing about, but it comes with real limits: the study was small (15 people), and its published abstract doesn't describe a placebo or control group, which makes it hard to separate a real effect from natural improvement over 4 weeks.
A larger, better-controlled trial points the other way. A 3-month, placebo-controlled study gave 113 people with a diagnosed liver condition a daily mixture of six ingredients — including silymarin and curcumin, alongside DHA, phosphatidylcholine, choline and vitamin E — or a placebo. Liver-enzyme markers moved in both groups, but there was no significant difference between the active mixture and placebo, and the trial's own authors concluded it failed to show a measurable benefit. Because the formula combined six ingredients, this trial also can't tell you what milk thistle or turmeric did on their own, even if it had found a difference.
No trial has isolated milk thistle and turmeric as a standalone, two-ingredient pairing, at any dose, for any outcome. See milk thistle benefits: what the research does and doesn't show and turmeric and liver health: what the research does and doesn't show for what each ingredient's own separate research base actually shows.
A reason to mention both to a doctor together
Curcumin has documented antiplatelet activity in laboratory and mechanistic research — it affects how platelets clump together — which is the basis for caution around blood thinners specifically; see turmeric and medications: what to check. Milk thistle's own interaction evidence is smaller and inconsistent: one trial found a genotype-dependent effect on a blood-pressure drug, while another found no effect on several major liver enzymes, and reviews describe its overall interaction potential as low but not zero (see milk thistle and medications: what to check). Taking both at once, especially alongside a prescription medication, is a reason to mention the full combination to a doctor rather than checking each ingredient separately.
Questions people ask
Can you take turmeric and milk thistle together?
No trial has tested the two-ingredient combination directly. The closest research — a small pilot study and a larger, null-result trial of a six-ingredient mixture — points in different directions and can't be credited to milk thistle and turmeric specifically. If you take a prescription medication, mention both supplements to a doctor.
Related reading: milk thistle benefits: what the research does and doesn't show, turmeric and liver health: what the research does and doesn't show, and how to choose a good milk thistle supplement.
Sources
- Therapeutic Effects of Curcuminoids and Silymarin, Individually and in Combination, in Patients With Hepatic Impairment A small, 4-week pilot study in 15 people with a diagnosed liver condition reported improved liver-enzyme and lipid markers with curcumin and silymarin, individually and combined — but the study was small, and its abstract doesn't describe a placebo control group, so the result is preliminary.
- Randomised trial of chronic supplementation with a nutraceutical mixture in subjects with non-alcoholic fatty liver disease A 3-month, placebo-controlled trial of a 6-ingredient mixture that included silymarin and curcumin, in 113 people with a diagnosed liver condition, found no significant difference between the active mixture and placebo on liver-enzyme or metabolic markers.
- The regulatory role of curcumin on platelet functions A 2018 review found curcumin has documented antiplatelet activity in laboratory and mechanistic research — it affects how platelets clump together — which is the pharmacological basis for caution around blood thinners, not a human bleeding-outcome trial.
- Safety and toxicity of silymarin, the major constituent of milk thistle extract: An updated review A 2019 safety review found silymarin generally well tolerated in humans, even at high doses for 24 weeks, with gastrointestinal upset as the main limiting side effect.
*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.