Drug interactions
Cefotetan + Fondaparinux
Severity: Moderate
Cefotetan 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
Cefotetan contains an N-methylthiotetrazole side chain that can lower vitamin K-dependent clotting factors and cause bleeding. Combined with fondaparinux, the bleeding risk may rise.
What this interaction means in plain words
Cefotetan 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.
Cefotetan belongs to Anti Bacterial; Fondaparinux belongs to Cardiovascular.
Why it happens
Additive bleeding tendency from vitamin K antagonism and factor Xa inhibition.
What to do
Monitor for bleeding signs and INR/prothrombin time, particularly in malnourished or prolonged-therapy patients. Give vitamin K if coagulopathy develops.
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 Cefotetan
- Cefotetan + Dronabinol Contraindicated
- Cefotetan + Warfarin Major
- Amikacin + Cefotetan Moderate
- Argatroban + Cefotetan Moderate
- Cefotetan + Dalteparin Moderate
- Cefotetan + Enoxaparin Moderate
Frequently asked questions
Can I take Cefotetan with Fondaparinux?
MediHelp rates the interaction as moderate. Cefotetan 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. Cefotetan contains an N-methylthiotetrazole side chain that can lower vitamin K-dependent clotting factors and cause bleeding. Combined with fondaparinux, the bleeding risk may rise.
How serious is the interaction between Cefotetan 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 INR/prothrombin time, particularly in malnourished or prolonged-therapy patients. Give vitamin K if coagulopathy develops.
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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