What kind of interaction is it?

Caution: an interaction that may reduce efficacy or raise side-effect risk and warrants monitoring.

Is this interaction backed by published research?

Yes. NutriStack lists 1 citation row for the Fenofibrate + Milk Thistle pair, each linking to PubMed by PMID where available. Full sourcing methodology at https://nutristackapp.com/methodology/interactions.

Supplement × Prescription·a caution·Insufficient evidence

Fenofibrate + Milk Thistle

Q: Can I take Fenofibrate and Milk Thistle together?

Possibly, but with caution. Fenofibrate and Milk Thistle have a documented caution-tier interaction. Fenofibrate can elevate liver transaminases and, rarely, cause hepatotoxicity. Milk thistle (silymarin) is taken for liver support but can mask or complicate interpretation of liver enzyme changes, and combining hepatically processed agents warrants attention to liver status rather than reliance on the supplement.

Q: How does this affect a NutriStack Stack Score?

-5 to your Stack Score per scored caution row.

Caution Insufficient evidence

Fenofibrate can elevate liver transaminases and, rarely, cause hepatotoxicity. Milk thistle (silymarin) is taken for liver support but can mask or complicate interpretation of liver enzyme changes, and combining hepatically processed agents warrants attention to liver status rather than reliance on the supplement.

Supplement × Prescription

Open the interaction checker → Read the methodology

From the database

What the row says.

Every entry follows the same shape: what is happening, the mechanism, and the recommendation.

Substances

Fenofibrate and Milk Thistle

Pair type

Caution

Evidence

Insufficient

Source citations

Scope

Supplement × Prescription

Last verified

June 4, 2026

CautionInsufficient evidence

What is happening. Fenofibrate can elevate liver transaminases and, rarely, cause hepatotoxicity. Milk thistle (silymarin) is taken for liver support but can mask or complicate interpretation of liver enzyme changes, and combining hepatically processed agents warrants attention to liver status rather than reliance on the supplement.

Mechanism. Fenofibrate is associated with dose-related elevations in ALT/AST and rare drug-induced liver injury. Silymarin has antioxidant and membrane-stabilizing hepatic effects and weak influence on drug-metabolizing enzymes; its main practical concern here is confounding clinical assessment of fenofibrate hepatotoxicity.

Recommendation. Do not use milk thistle as a substitute for monitoring fenofibrate-related liver effects. Continue scheduled liver function tests, and report fatigue, right-upper-quadrant pain, dark urine, or jaundice. Discuss any liver supplement use with the prescriber.

Stack Score

How it moves the number.

Effect on the composite score

If both Fenofibrate and Milk Thistle are in the same stack, this pair applies −5 to your Stack Score (per scored caution row).

The full algorithm, the clamping rules, and four worked stacks are at /methodology/stack-score.

Sources

Sources, by evidence tier.

Every claim on this page is cited. PMIDs link straight to PubMed.

Reference material

1Davidson MH, Armani A, McKenney JM, Jacobson TA. Safety considerations with fibrate therapy. Am J Cardiol. 2007.Needs sourceNo link

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