Supplement × Supplement·a caution·Emerging evidence
Concentrated extracts can both cause GI upset, and cassia cinnamon plus high-dose EGCG may increase liver-safety concerns.
Every entry follows the same shape: what is happening, the mechanism, and the recommendation.
What is happening. Concentrated extracts can both cause GI upset, and cassia cinnamon plus high-dose EGCG may increase liver-safety concerns.
Mechanism. Potential additive hepatic stress from coumarin and concentrated catechins.
Recommendation. Prefer low-coumarin cinnamon and avoid high-dose extract stacking in liver disease.
Effect on the composite score
If both Cinnamon Extract and Green Tea Extract 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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