See also How to Use section.
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
Levoketoconazole interacts with many prescription and nonprescription drugs. While you are taking levoketoconazole, it is very important to tell your doctor or pharmacist of any changes in medications that you are taking.
Some products that may interact with this drug are other drugs that can cause liver problems (such as acetaminophen).
Other medications can affect the removal of levoketoconazole from your body, which may affect how levoketoconazole works. Examples include HIV protease inhibitors (such as ritonavir), isoniazid, nevirapine, rifamycins (such as rifabutin, rifampin), St. John's wort, drugs used to treat seizures (such as carbamazepine, phenytoin), among others.
This medication can slow down the removal of many other medications from your body, which may affect how they work. Examples of affected drugs include some benzodiazepines (such as alprazolam, midazolam, triazolam), domperidone, eletriptan, eplerenone, ergot drugs (such as ergotamine), nisoldipine, drugs used to treat erectile dysfunction-ED or pulmonary hypertension (such as sildenafil, tadalafil), some statin drugs (such as lovastatin, simvastatin), among others.
Many drugs besides levoketoconazole may affect the heart rhythm (QT prolongation), including bosutinib, disopyramide, dofetilide, dronedarone, methadone, pimozide, quinidine, ranolazine, among others.
Levoketoconazole requires acid in the stomach to be well absorbed. If you are taking drugs that decrease the amount of stomach acid (including sucralfate, H2 blockers such as famotidine/ranitidine, proton pump inhibitors such as lansoprazole/omeprazole), ask your doctor or pharmacist for advice on how to reduce or avoid this interaction. Antacids may be taken at least 2 hours after taking levoketoconazole.
Levoketoconazole is very similar to ketoconazole. Do not use medications containing ketoconazole while using levoketoconazole.