Celecoxib and Fluconazole interaction
Celecoxib and Fluconazole: both prescribing labels describe an interaction that usually calls for monitoring, a dose change, or spacing the doses.
Usually manageable with monitoring or a dose change. Tell your pharmacist you take both.
What the FDA labels say
From the Celecoxib (VYSCOXA) label · effective 2025-07-31
Co-administration of celecoxib with drugs that are known to inhibit CYP2C9 (e.g., fluconazole) may enhance the exposure and toxicity of celecoxib whereas co-administration with CYP2C9 inducers (e.g., rifampin) may lead to compromised efficacy of celecoxib.
A dosage adjustment may be warranted when VYSCOXA is administered with CYP2C9 inhibitors or inducers [ see Clinical Pharmacology (12.3) ].
CYP2C9 Inhibitors or inducers Clinical Impact: Celecoxib metabolism is predominantly mediated via cytochrome P450 (CYP) 2C9 in the liver.
From the Fluconazole label · effective 2026-04-02
Celecoxib During concomitant treatment with fluconazole (200 mg daily) and celecoxib (200 mg), the celecoxib C max and AUC increased by 68% and 134%, respectively.
Half of the celecoxib dose may be necessary when combined with fluconazole.
Non-steroidal anti-inflammatory drugs The C max and AUC of flurbiprofen were increased by 23% and 81%, respectively, when coadministered with fluconazole compared to administration of flurbiprofen alone.
Although not specifically studied, fluconazole has the potential to increase the systemic exposure of other non-steroidal anti-inflammatory drugs (NSAIDs) that are metabolized by CYP2C9 (e.g., naproxen, lornoxicam, meloxicam, diclofenac).
Frequent monitoring for adverse events and toxicity related to NSAIDs is recommended.
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.