What kind of interaction is it?

Caution: an interaction that may reduce efficacy or raise side-effect risk and warrants monitoring.

Is this interaction backed by published research?

Yes. NutriStack lists 1 citation row for the Anthocyanins (Bilberry Extract) + Fish Oil pair, each linking to PubMed by PMID where available. Full sourcing methodology at https://nutristackapp.com/methodology/interactions.

Supplement × Supplement·a caution·Emerging evidence

Anthocyanins (Bilberry Extract) + Fish Oil

Q: Can I take Anthocyanins (Bilberry Extract) and Fish Oil together?

Possibly, but with caution. Anthocyanins (Bilberry Extract) and Fish Oil have a documented caution-tier interaction. Both bilberry anthocyanins and high-dose fish oil can mildly reduce platelet aggregation. Taken together, and especially alongside anticoagulant or antiplatelet medication, they may have an additive effect on bleeding tendency.

Q: How does this affect a NutriStack Stack Score?

-5 to your Stack Score per scored caution row.

Caution Emerging evidence

Both bilberry anthocyanins and high-dose fish oil can mildly reduce platelet aggregation. Taken together, and especially alongside anticoagulant or antiplatelet medication, they may have an additive effect on bleeding tendency.

Supplement × Supplement

Open the interaction checker → Read the methodology

From the database

What the row says.

Every entry follows the same shape: what is happening, the mechanism, and the recommendation.

Substances

Anthocyanins (Bilberry Extract) and Fish Oil

Pair type

Caution

Evidence

Emerging

Source citations

Scope

Supplement × Supplement

Last verified

June 4, 2026

CautionEmerging evidence

What is happening. Both bilberry anthocyanins and high-dose fish oil can mildly reduce platelet aggregation. Taken together, and especially alongside anticoagulant or antiplatelet medication, they may have an additive effect on bleeding tendency.

Mechanism. Omega-3 fatty acids reduce thromboxane-mediated platelet aggregation while anthocyanins have mild antiplatelet and endothelial effects, producing a potential additive antithrombotic effect.

Recommendation. Combining is generally fine for most people. Use caution at high doses, before surgery, or if on anticoagulants or antiplatelet drugs; discuss with a clinician in those situations and watch for easy bruising or prolonged bleeding.

Stack Score

How it moves the number.

Effect on the composite score

If both Anthocyanins (Bilberry Extract) and Fish Oil 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

1Krga I, Milenkovic D. Anthocyanins: from sources and bioavailability to cardiovascular-health benefits and molecular mechanisms of action. Journal of Agricultural and Food Chemistry. 2019.Needs sourceNo link

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