What is Nizoral? Uses, warnings & side effects

Updated May 14, 2025  •  Published Sep 22, 2023

Nizoral overview

BRAND NAMES:

  • Nizoral

Generic Names:

  • Nizoral

Uses:

  • Treats fungal infections.

Therapeutic Classes:

  • Steroid Synthesis Inhibitor, Antifungal

Forms:

  • Tablet

How it’s taken:

  • By mouth

What is Nizoral used for?

What form(s) does Nizoral come in?

  • Tablet

What are common Nizoral dosages?

  • Bottle 200ml of 1%

Nizoral images - What does Nizoral look like?

  • Nizoral
    120ml of 2% bottle

  • Nizoral
    200ml of 1% bottle

How to take Nizoral

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • This medicine should come with a Medication Guide. Ask your pharmacist for a copy if you do not have one.

  • Take all of the medicine in your prescription to clear up your infection, even if you feel better after the first few doses.

  • Oral routeIt is best to take this medicine with food or milk.

  • Take your medicine as directed. Your dose may need to be changed several times to find what works best for you.

What to do if you miss a dose of Nizoral

Nizoral contraindications - Who shouldn't take Nizoral?

  • This medicine is not right for everyone. Do not use it if you had an allergic reaction to ketoconazole or similar medicines.

Nizoral warnings

  • This medicine may cause the following problems:Liver problemsChanges in heart rhythm, such as a condition called QT prolongation

  • Do not drink alcohol while you are using this medicine.

  • Do not breastfeed while you are using this medicine.

  • Tell your doctor if you are pregnant, or if you have liver disease, heart rhythm problems (such as QT prolongation), adrenal problems, or stomach problems.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • Call your doctor if your symptoms do not improve or if they get worse. Keep all appointments.

Nizoral interactions & what to avoid when taking Nizoral

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • Call your doctor if your symptoms do not improve or if they get worse. Keep all appointments.

  • Do not use this medicine together with alprazolam, cisapride, colchicine, disopyramide, dofetilide, dronedarone, eplerenone, felodipine, irinotecan, lovastatin, lurasidone, methadone, nisoldipine, oral midazolam, pimozide, quinidine, ranolazine, simvastatin, tolvaptan, triazolam, or ergot medicines (such as dihydroergotamine, ergometrine, ergotamine, methylergometrine).

  • There are many medicines that can affect how ketoconazole works. Tell your doctor if you are using carbamazepine, colchicine, dasatinib, everolimus, isoniazid, lapatinib, nilotinib, phenytoin, rifabutin, rivaroxaban, salmeterol, sirolimus, tamsulosin, telithromycin, temsirolimus, or warfarin.

  • If you take medicine to reduce stomach acid (such as antacids), take it at least 1 hour before or 2 hours after you take ketoconazole.

  • Do not drink alcohol while you are using this medicine.

Nizoral side effects - How does Nizoral make you feel?

Serious Side Effects

  • Dark urine or pale stools, nausea, vomiting, loss of appetite, pain in your upper stomach, yellow skin or eyes

  • Fainting, dizziness, lightheadedness

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Fast, pounding, or uneven heartbeat

Less Serious Side Effects

  • Problems having sex

  • Headache

  • Swollen breasts (in males)

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