NutriStack
CautionEmerging evidence
What is happening. Both may lower blood pressure and affect platelet activity.
Mechanism. Additive vasodilatory and antiplatelet effects.
Recommendation. Monitor blood pressure and bleeding risk, especially before surgery.
Supplement × Supplement·a caution·Emerging evidence
Garlic Extract + Hawthorn (Crataegus)
Caution
Emerging evidence
Both may lower blood pressure and affect platelet activity.
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
Emerging
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 Garlic Extract and Hawthorn (Crataegus) 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- 1Walker AF et al. Hawthorn hypotensive effects. Br J Gen Pract. 2006.Needs sourceNo link
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