Does Nattokinase interact with Aged Garlic Extract?

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

Stacked clot effects.

Nattokinase breaks down fibrin while garlic is mildly anti-platelet, so combining them stacks two different clot-reducing mechanisms and can raise bleeding risk, particularly with anticoagulant medication.

What to do

Avoid combining if you take blood thinners or have a bleeding disorder, and pause both before surgery. Otherwise keep doses moderate and watch for warning signs such as easy bruising, bleeding gums, nosebleeds, or cuts that are slow to stop.

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Nattokinase
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Aged Garlic Extract
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Common questions

Can I take Nattokinase and Aged Garlic Extract together?
Check with a clinician. Avoid combining if you take blood thinners or have a bleeding disorder, and pause both before surgery. Otherwise keep doses moderate and watch for warning signs such as easy bruising, bleeding gums, nosebleeds, or cuts that are slow to stop.
Why do Nattokinase and Aged Garlic Extract interact?
Nattokinase breaks down fibrin while garlic is mildly anti-platelet, so combining them stacks two different clot-reducing mechanisms and can raise bleeding risk, particularly with anticoagulant medication.

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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.