NutriStack
CautionModerate evidence
What is happening. Both may increase bleeding tendency.
Mechanism. Potential additive antiplatelet and anticoagulant effects.
Recommendation. Avoid high-dose combination and stop before surgery if advised.
Supplement × Supplement·a caution·Moderate evidence
Dong Quai + Ginkgo Biloba
Caution
Moderate evidence
Both may increase bleeding tendency.
From the database
What the row says.
Every entry follows the same shape: what is happening, the mechanism, and the recommendation.
Substances
Pair type
Caution
Evidence
Moderate
Source citations
1
Scope
Supplement × Supplement
Last verified
June 4, 2026
Stack Score
How it moves the number.
Effect on the composite score
If both Dong Quai and Ginkgo Biloba 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.
Sources
Sources, by evidence tier.
Every claim on this page is cited. PMIDs link straight to PubMed.
Reference material
1- 1Page RL et al. Potentiation of warfarin by dong quai. Pharmacotherapy. 1999.Needs sourceNo link
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