Cefixime and Phytonadione (vitamin K1) interaction
Cefixime and Phytonadione (vitamin K1): the Cefixime prescribing label describes an interaction that usually calls for monitoring, a dose change, or spacing the doses.
Moderate
Usually manageable with monitoring or a dose change. Tell your pharmacist you take both.
What the FDA labels say
From the Cefixime label · effective 2026-08-05
Moderate
Prothrombin time should be monitored in patients at risk and exogenous vitamin K administered as indicated.
Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.
Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.