From the databaseWhat the row says.
Every entry follows the same shape: what is happening, the mechanism, and the recommendation.
Pair type
Timing Sensitive
Scope
Supplement × Supplement
Last verified
June 4, 2026
Timing SensitiveEmerging evidence
What is happening. Berberine has antimicrobial properties that may reduce probiotic viability if taken together.
Mechanism. Antimicrobial exposure during GI transit may impair live probiotic organisms.
Recommendation. Separate berberine and BB536 by at least 2-3 hours.
TimingTiming & separation.
Space the doses apart by at least this window to avoid the conflict.
Stack Score
How it moves the number.
Effect on the composite score
If both Berberine and Bifidobacterium longum BB536 are in the same stack, this pair applies −5 to your Stack Score (per scored timing-sensitive 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- 1Fukuda S et al. BB536 microbiome and metabolome RCT. Gut Microbes. 2022.Needs sourceNo link