Common brand names:
See also Warning section.
Ketoconazole is used to treat certain serious fungal infections in the body. Ketoconazole belongs to the class of drugs called azole antifungals. It works by stopping the growth of the fungus.
Ketoconazole should not be used to treat fungal infections in the brain or on the skin and nails.
This section contains uses of this drug that are not listed in the approved professional labeling for the drug but that may be prescribed by your health care professional. Use this drug for a condition that is listed in this section only if it has been so prescribed by your health care professional.
This drug may also be used to treat advanced prostate cancer.
How to Use This Medication
Read the Medication Guide provided by your pharmacist before you start taking ketoconazole and each time you get a refill. If you have any questions, ask your doctor or pharmacist.
Take this medication by mouth as directed by your doctor, usually once a day. This medication may be taken with or without food, but taking it with food helps to reduce stomach upset.
If you are taking an antacid, take ketoconazole at least 2 hours before or 1 hour after taking the antacid, otherwise ketoconazole may not be absorbed into the body. See also Drug Interactions for more information.
The dosage and length of treatment is based on your medical condition and response to treatment. In children, the dosage is also based on weight. It may take from several days to several months to complete treatment.
This medication works best when the amount of medicine in your body is kept at a constant level. Therefore, take this drug at evenly spaced intervals. To help you remember, take it at the same time each day.
Continue to take this medication until the full prescribed amount is finished, even if symptoms disappear after a few days. Stopping the medication too early may result in a return of the infection.
Tell your doctor if your condition persists or worsens.
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