Drug interactions
Fish oil + Fondaparinux
Severity: Minor
Fish oil and Fondaparinux: minor interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Omega-3 fatty acids have mild antiplatelet activity and may slightly prolong bleeding time. Clinically significant bleeding with usual supplement doses is uncommon but possible with anticoagulants.
What this interaction means in plain words
Fish oil and Fondaparinux have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Fish oil belongs to Gastrointestinal Tract; Fondaparinux belongs to Cardiovascular.
Why it happens
Omega-3 fatty acids modestly reduce platelet aggregation, adding to the anticoagulant effect.
What to do
Usual supplement doses are generally acceptable; monitor for bleeding if high doses are used.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Fondaparinux
- Defibrotide + Fondaparinux Contraindicated
- Fondaparinux + Ketorolac Contraindicated
- Abciximab + Fondaparinux Major
- Aceclofenac + Fondaparinux Major
- Acetylsalicylic acid + Fondaparinux Major
- Alteplase + Fondaparinux Major
Other interactions of Fish oil
- Antithrombin alfa + Fish oil Moderate
- Antithrombin iii + Fish oil Moderate
- Aspirin / citric acid / sodium bicarbonate + Fish oil Moderate
- Aspirin + Fish oil Moderate
- Betrixaban + Fish oil Moderate
- Bivalirudin + Fish oil Moderate
Frequently asked questions
Can I take Fish oil with Fondaparinux?
MediHelp rates the interaction as minor. Fish oil and Fondaparinux have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Omega-3 fatty acids have mild antiplatelet activity and may slightly prolong bleeding time. Clinically significant bleeding with usual supplement doses is uncommon but possible with anticoagulants.
How serious is the interaction between Fish oil and Fondaparinux?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Usual supplement doses are generally acceptable; monitor for bleeding if high doses are used.
What other medicines interact with Fondaparinux?
MediHelp also lists interactions of Fondaparinux with, for example, Defibrotide, Ketorolac, Abciximab. The full list is on the Fondaparinux page.
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