Supplement × Prescription·a caution·Emerging evidence
Concentrated green tea extract has been associated with liver injury, which can complicate use of hepatotoxic drugs such as Niacin (Prescription).
Every entry follows the same shape: what is happening, the mechanism, and the recommendation.
What is happening. Concentrated green tea extract has been associated with liver injury, which can complicate use of hepatotoxic drugs such as Niacin (Prescription).
Mechanism. This is an additive hepatic safety concern rather than a proven pharmacokinetic interaction.
Recommendation. Avoid high-dose green tea extract during therapy or use only with clinician review, especially if liver enzymes are abnormal or symptoms of hepatitis occur.
Effect on the composite score
If both Green Tea Extract and Niacin (Prescription) 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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