Cefazolin and Theophylline interaction
Cefazolin and Theophylline: the Theophylline prescribing label mentions this combination without an instruction to avoid it or change the dose.
Minor
Mentioned, no instruction to avoid. Worth knowing; rarely a reason to change anything on its own.
What the FDA labels say
From the Theophylline label · effective 2026-01-29
Minor
Some drugs (e.g. cefazolin, cephalothin), however, may interfere with certain HPLC techniques.
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.