Drug interactions
Ceftriaxone + Fondaparinux
Severity: Minor
Ceftriaxone 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
No documented clinically significant interaction exists between ceftriaxone and fondaparinux. Ceftriaxone may rarely prolong clotting times in malnourished patients. Any added bleeding risk is small.
What this interaction means in plain words
Ceftriaxone 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.
Ceftriaxone belongs to Anti Bacterial; Fondaparinux belongs to Cardiovascular.
Why it happens
Possible vitamin K depletion by ceftriaxone adds theoretically to bleeding risk; no direct effect on fondaparinux.
What to do
Continue both as indicated; monitor for bleeding and renal function.
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 Ceftriaxone
- Calcium chloride + Ceftriaxone Contraindicated
- Calcium gluconate + Ceftriaxone Contraindicated
- Calcium + Ceftriaxone Contraindicated
- Ceftriaxone + Lactated ringer's Contraindicated
- Ceftriaxone + Ringer's solution Contraindicated
- Calcium acetate + Ceftriaxone Major
Other interactions of Fondaparinux
- Defibrotide + Fondaparinux Contraindicated
- Fondaparinux + Ketorolac Contraindicated
- Abciximab + Fondaparinux Major
- Aceclofenac + Fondaparinux Major
- Acetylsalicylic acid + Fondaparinux Major
- Alteplase + Fondaparinux Major
Frequently asked questions
Can I take Ceftriaxone with Fondaparinux?
MediHelp rates the interaction as minor. Ceftriaxone 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. No documented clinically significant interaction exists between ceftriaxone and fondaparinux. Ceftriaxone may rarely prolong clotting times in malnourished patients. Any added bleeding risk is small.
How serious is the interaction between Ceftriaxone 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: Continue both as indicated; monitor for bleeding and renal function.
What other medicines interact with Ceftriaxone?
MediHelp also lists interactions of Ceftriaxone with, for example, Calcium chloride, Calcium gluconate, Calcium. The full list is on the Ceftriaxone page.
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