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 2 citation rows for the Curcumin Phytosome + Rifampin pair, each linking to PubMed by PMID where available. Full sourcing methodology at https://nutristackapp.com/methodology/interactions.

Supplement × Prescription·a caution·Emerging evidence

Curcumin Phytosome + Rifampin

Q: Can I take Curcumin Phytosome and Rifampin together?

Possibly, but with caution. Curcumin Phytosome and Rifampin have a documented caution-tier interaction. Rifampin can lower exposure to orally administered curcumin, while curcumin may inhibit some enzymes and transporters; the net effect is reduced and unpredictable curcumin bioavailability when taken with rifampin.

Q: How does this affect a NutriStack Stack Score?

-5 to your Stack Score per scored caution row.

Caution Emerging evidence

Rifampin can lower exposure to orally administered curcumin, while curcumin may inhibit some enzymes and transporters; the net effect is reduced and unpredictable curcumin bioavailability when taken with rifampin.

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

Curcumin Phytosome and Rifampin

Pair type

Caution

Evidence

Emerging

Source citations

Scope

Supplement × Prescription

Last verified

June 4, 2026

CautionEmerging evidence

What is happening. Rifampin can lower exposure to orally administered curcumin, while curcumin may inhibit some enzymes and transporters; the net effect is reduced and unpredictable curcumin bioavailability when taken with rifampin.

Mechanism. Rifampin induces intestinal and hepatic CYP3A4, UGT-mediated glucuronidation, and P-glycoprotein, accelerating first-pass metabolism and efflux of curcumin, which is already heavily glucuronidated and sulfated.

Recommendation. Do not rely on curcumin supplements to produce consistent effects during rifampin therapy, as its already-low bioavailability may be further reduced. There is no need to stop curcumin for safety, but expect diminished and variable effect.

Stack Score

How it moves the number.

Effect on the composite score

If both Curcumin Phytosome and Rifampin 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

1Volak LP, et al. Curcuminoids inhibit multiple human cytochromes P450, UDP-glucuronosyltransferase, and sulfotransferase enzymes. Br J Pharmacol. 2008.Needs sourceNo link
2Bahramsoltani R, et al. Pharmacokinetic interactions of curcuminoids with conventional drugs: a review. J Ethnopharmacol. 2017.Needs sourceNo link

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