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. Garlic extract can have antiplatelet effects that may add to vinpocetine-related bleeding concerns.
Mechanism. Additive effects on platelet aggregation and vascular tone are plausible.
Recommendation. Avoid high-dose garlic extract with vinpocetine in people with bleeding risk or upcoming procedures.
Stack Score
How it moves the number.
Effect on the composite score
If both Garlic Extract and Vinpocetine 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- 1Cohen PA et al. Vinpocetine dietary supplements. Drug Testing and Analysis. 2015.Needs sourceNo link