Supplement × Prescription·a caution·Emerging evidence
Quercetin may inhibit CYP3A4 or P-glycoprotein and could increase cyclosporine exposure and nephrotoxicity.
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 cyclosporine exposure and nephrotoxicity.
Mechanism. Potential CYP3A4/P-glycoprotein inhibition increases cyclosporine exposure.
Recommendation. Avoid high-dose quercetin unless transplant clinicians monitor trough levels and kidney function.
Effect on the composite score
If both Cyclosporine and Quercetin 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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