Cefaclor and Cefixime interaction
Cefaclor and Cefixime: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Cefixime label · effective 2026-08-05
Contraindicated in patients with known allergy to cefixime or other cephalosporins.
Cefixime is contraindicated in patients with known allergy to cefixime or other cephalosporins.
A false positive direct Coombs test has been reported during treatment with other cephalosporins; therefore, it should be recognized that a positive Coombs test may be due to the drug.
From the Cefaclor label · effective 2019-07-31
CONTRAINDICATIONS Cefaclor extended-release tablets are contraindicated in patients with known hypersensitivity to cefaclor and other cephalosporins.
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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.