Does Omega-3 Fish Oil interact with Nattokinase?

Written to our editorial standards · reviewed against published research· Updated 2 Jun 2026
Check with a clinician· moderate evidence

Compounded blood-thinning effect.

Nattokinase is a fibrinolytic enzyme that breaks down fibrin and can reduce clot formation, while omega-3 is mildly anti-platelet. Stacked, the two act on different parts of clotting and can meaningfully shift the balance toward bleeding, particularly at higher nattokinase doses.

What to do

Do not combine these without medical guidance if you take anticoagulant or antiplatelet medication, have a clotting disorder, or are approaching surgery. For others, keep doses modest and stop before any procedure that carries a bleeding risk.

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Omega-3 Fish Oil
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Nattokinase
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Common questions

Can I take Omega-3 Fish Oil and Nattokinase together?
Check with a clinician. Do not combine these without medical guidance if you take anticoagulant or antiplatelet medication, have a clotting disorder, or are approaching surgery. For others, keep doses modest and stop before any procedure that carries a bleeding risk.
Why do Omega-3 Fish Oil and Nattokinase interact?
Nattokinase is a fibrinolytic enzyme that breaks down fibrin and can reduce clot formation, while omega-3 is mildly anti-platelet. Stacked, the two act on different parts of clotting and can meaningfully shift the balance toward bleeding, particularly at higher nattokinase doses.

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Educational use only, not medical advice. Interaction risk depends on dose, your health, and any medications. Always consult a qualified clinician, especially if you take prescription drugs or are pregnant or nursing.