Ketoconazole and Repaglinide interaction
Ketoconazole and Repaglinide: 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 Ketoconazole label · effective 2026-07-07
Antidiabetics repaglinide, saxagliptin Antihelmintics and Antiprotozoals praziquantel Antimigraine Drugs ergot alkaloids, such as dihydroergotamine, ergometrine (ergonovine), ergotamine, methylergometrine (methylergonovine) eletriptan Ergot alkaloids: The potential increase in plasma concentrations of ergot alkaloids when coadministered with ketoconazole tablets…
From the Repaglinide label · effective 2025-05-02
CYP2C8 and CYP3A4 Inhibitors Intervention: Repaglinide tablets dose reductions and increased frequency of glucose monitoring may be required when co‑administered.
CYP2C8 and CYP3A4 Inhibitors and Drugs That May Increase the Risk of Hypoglycemia : Co-administration may require repaglinide tablets dose reductions and increased frequency of glucose monitoring ( 7 )
Examples: Drugs that are known to inhibit CYP3A4 include antifungal agents (ketoconazole, itraconazole) and antibacterial agents (clarithromycin, erythromycin).
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.