Does Ketoconazole Interact With Oxycodone?

Use this combination with caution. Your prescriber may monitor you more closely or adjust doses.

Interactions like this one can happen when two medicines have overlapping effects, or when one changes how the other is absorbed, broken down, or cleared from the body. Ketoconazole is a azole antifungal (strong cyp3a4 inhibitor) and Oxycodone is a opioid analgesic; together they are documented as a moderate interaction. How much this matters depends on your dose, your other medications, and your overall health.

If you have been prescribed both Ketoconazole and Oxycodone, do not start, stop, or change either medication on your own — some medicines are unsafe to stop suddenly. Tell your prescriber and pharmacist that you take both so they can decide whether the combination is right for you, adjust the dose, monitor you more closely, or suggest an alternative.

5.6 Risks of Concomitant Use or Discontinuation of Cytochrome P450 3A4 Inhibitors and Inducers Concomitant use of oxycodone hydrochloride with a CYP3A4 inhibitor, such as macrolide antibiotics (e.g., erythromycin), azole-antifungal agents (e.g., ketoconazole), and protease inhibitors (e.g., ritonavir), may increase plasma concentrations of oxycodone and prolong opioid adverse reactions, which may cause potentially fatal respiratory depression [see Warnings and Precautions (5.3)] , particularl…

Source: FDA structured product labeling (set_id 01db4606-d49c-4b10-a78a-1cf41880a9fb).