Supplement × Prescription·a caution·Emerging evidence
Quercetin may inhibit CYP3A4 or P-glycoprotein and could increase tacrolimus exposure and toxicity.
Every entry follows the same shape: what is happening, the mechanism, and the recommendation.
What is happening. Quercetin may inhibit CYP3A4 or P-glycoprotein and could increase tacrolimus exposure and toxicity.
Mechanism. Potential CYP3A4/P-glycoprotein inhibition increases tacrolimus exposure.
Recommendation. Avoid high-dose quercetin unless trough levels and kidney function are monitored by the transplant team.
Effect on the composite score
If both Quercetin and Tacrolimus 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.
Every claim on this page is cited. PMIDs link straight to PubMed.
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NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.
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