Ketoconazole and Lurasidone interaction
Ketoconazole and Lurasidone: 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 Ketoconazole label · effective 2026-07-07
QT Prolongation and Drug Interactions Leading to QT Prolongation Coadministration of the following drugs with ketoconazole is contraindicated: dofetilide, quinidine, pimozide, lurasidone, cisapride, methadone, disopyramide, dronedarone, ranolazine.
Coadministration of ketoconazole tablets with lurasidone is contraindicated since it may result in an increase in lurasidone exposure and the potential for serious adverse reactions.
…contraindicated with ketoconazole tablets: methadone, disopyramide, dronedarone, ergot alkaloids such as dihydroergotamine, ergometrine, ergotamine, methylergometrine, irinotecan, lurasidone, oral midazolam, alprazolam, triazolam, felodipine, nisoldipine, ranolazine, tolvaptan, eplerenone, lovastatin, simvastatin and colchicine (see PRECAUTIONS: Drug Interactions…
Coadministration of the following drugs with ketoconazole is contraindicated: dofetilide, quinidine, pimozide, lurasidone, cisapride, methadone, disopyramide, dronedarone, ranolazine.
This may potentiate and prolong hypnotic and sedative effects, especially with repeated dosing or chronic administration of these agents.
From the Lurasidone (Latuda) label · effective 2025-01-31
Strong CYP3A4 inhibitors (e.g., ketoconazole, clarithromycin, ritonavir, voriconazole, mibefradil, etc.) [see Drug Interactions ( 7.1 )].
Concomitant use with a strong CYP3A4 inhibitor (e.g., ketoconazole) ( 2.6 , 4 , 7.1 ).
Intervention: LATUDA should not be used concomitantly with strong CYP3A4 inhibitors [see Contraindications ( 4 )] .
Drugs Having Clinically Important Interactions with LATUDA Table 34: Clinically Important Drug Interactions with LATUDA Strong CYP3A4 Inhibitors Clinical Impact: Concomitant use of LATUDA with strong CYP3A4 inhibitors increased the exposure of lurasidone compared to the use of LATUDA alone [see Clinical Pharmacology ( 12.3 )] .
Examples: Ketoconazole, clarithromycin, ritonavir, voriconazole, mibefradil Moderate CYP3A4 Inhibitors Clinical Impact: Concomitant use of LATUDA with moderate CYP3A4 inhibitors increased the exposure of lurasidone compared to the use of LATUDA alone [see Clinical Pharmacology ( 12.3 )] .
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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.