Ginger and milk thistle: what the combination trial found

No trial has tested ginger and milk thistle as a standalone, two-ingredient pair. Both do show up together, though, as two of four herbs in a single industry-funded trial that measured liver enzyme changes over 180 days — a real finding, but not one that isolates what either ingredient did on its own.

The trial that included both

A 2026 randomized, double-blind, placebo-controlled trial gave 130 healthy adults a liquid formula containing organic extracts of turmeric, dandelion, milk thistle and ginger — or a matching placebo — twice daily for 180 days. The measured outcome was change in four standard liver enzyme markers (ALT, AST, ALP and GGT), and the formula group showed significantly greater improvement than placebo in all four (P≤0.001), with no adverse events reported.

That's a genuine, reasonably long, well-powered result for a supplement trial. But it tested a four-herb combination, not ginger or milk thistle individually, so it can't say how much of the effect, if any, came from ginger, how much from milk thistle, or how much from the other two herbs. It's also worth knowing that the trial was funded by the formula's manufacturer, who was involved in the study's design, the interpretation of the data, and the decision to publish — a real limitation on how much weight to put on the result, not a reason to dismiss it outright.

What each ingredient's own research covers

Ginger's separate research base — nausea, digestion, exercise soreness, menstrual pain, and more — is covered in ginger benefits: what the research does and doesn't show. Milk thistle's own research, largely on silymarin and liver enzyme markers in people with existing liver conditions, is covered separately in what is milk thistle and milk thistle and liver health: what the research does and doesn't show. Neither ingredient's individual trials tested it paired specifically with the other.

Questions people ask

Do ginger and milk thistle work well together?

The only trial that included both tested them as two of four herbs in one formula, not as a pair on their own, so there's no research isolating a "ginger and milk thistle" effect specifically.

Is there a supplement with both ginger and milk thistle?

Yes — combination liver-support formulas commonly include both, along with other herbs like turmeric or dandelion. A product combining ingredients isn't the same as a trial proving the combination outperforms any one ingredient alone.

Can you take ginger and milk thistle together safely?

We haven't found a documented interaction between the two specifically. Each carries its own separate cautions — ginger's are covered in ginger and medications: what to check. If you take a prescription medication, ask a doctor before combining supplements.

How much ginger and how much milk thistle should I take?

The 180-day trial above used a combined liquid formula, not separate isolated doses, so it doesn't answer that question for each ingredient on its own. Ginger's own trial doses are covered in ginger dosage: what the trials used — check that alongside milk thistle's own dosage research rather than assuming one ingredient's serving size applies to the other.

Related reading: ginger benefits: what the research does and doesn't show, ginger dosage: what the trials used, and what is ginger.