Drug interactions
Fluoxetine + Fondaparinux
Severity: Moderate
Fluoxetine and Fondaparinux: moderate 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
SSRIs impair platelet function and can increase bleeding risk when taken with anticoagulants. The effect is additive, and gastrointestinal bleeding is the most frequent concern.
What this interaction means in plain words
Fluoxetine and Fondaparinux can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Fluoxetine belongs to Central Nervous System; Fondaparinux belongs to Cardiovascular.
Why it happens
Fluoxetine depletes platelet serotonin and impairs aggregation, adding to the anticoagulant effect of fondaparinux.
What to do
Monitor for bleeding signs and check hemoglobin if the combination is continued. Consider gastroprotection in patients at high risk of GI bleeding.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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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 Fluoxetine
- Fluoxetine + Isocarboxazid Contraindicated
- Fluoxetine + Mavacamten Contraindicated
- Fluoxetine + Methylene blue Contraindicated
- Fluoxetine + Phenelzine Contraindicated
- Fluoxetine + Pimozide Contraindicated
- Fluoxetine + Rasagiline Contraindicated
Frequently asked questions
Can I take Fluoxetine with Fondaparinux?
MediHelp rates the interaction as moderate. Fluoxetine and Fondaparinux can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. SSRIs impair platelet function and can increase bleeding risk when taken with anticoagulants. The effect is additive, and gastrointestinal bleeding is the most frequent concern.
How serious is the interaction between Fluoxetine and Fondaparinux?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for bleeding signs and check hemoglobin if the combination is continued. Consider gastroprotection in patients at high risk of GI bleeding.
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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