From the databaseWhat the row says.
Every entry follows the same shape: what is happening, the mechanism, and the recommendation.
Scope
Supplement × Supplement
Last verified
June 4, 2026
CautionEmerging evidence
What is happening. Both can cause GI upset, and concentrated green tea extract has liver-injury concerns at high EGCG doses.
Mechanism. Potential additive GI intolerance and liver-metabolism burden from concentrated polyphenol extracts.
Recommendation. Avoid high-dose hepatotoxic stacks and check liver enzymes if symptoms or liver risk are present.
Stack Score
How it moves the number.
Effect on the composite score
If both Bergamot (Citrus Bergamia) 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.
SourcesSources, by evidence tier.
Every claim on this page is cited. PMIDs link straight to PubMed.
Reference material
1- 1Mollace V et al. Bergamot polyphenolic fraction. Fitoterapia. 2011.Needs sourceNo link