Nizoral Side Effects

Nizoral (ketoconazole ) is an antifungal antibiotic.

Nizoral is used to treat infections caused by fungus, which can invade any part of the body including the mouth, throat, esophagus, lungs, bladder, or skin.

You should not use Nizoral if you are allergic to ketoconazole, or if you are also taking triazolam (Halcion).

If you have any of these other conditions, you may need a dose adjustment or special tests to safely take Nizoral:

  • decreased stomach acid (achlorhydria);
  • liver disease;
  • kidney disease;
  • a heart rhythm disorder; or
  • a personal or family history of “Long QT syndrome.”

FDA pregnancy category C. It is not known whether Nizoral is harmful to an unborn baby. Before you take Nizoral, tell your doctor if you are pregnant or plan to become pregnant during treatment. Ketoconazole may pass into breast milk and could harm a nursing baby. Do not use Nizoral without telling your doctor if you are breast-feeding a baby.

Get emergency medical help if you have any of these signs of an allergic reaction to Nizoral: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you have any of these serious side effects:

  • dizziness, fainting, fast or pounding heartbeat;
  • easy bruising or bleeding, unusual weakness;
  • numbness or tingly feeling;
  • severe depression, confusion, or thoughts of hurting yourself; or
  • nausea, stomach pain, low fever, loss of appetite, weakness, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).

Less serious Nizoral side effects may include:

  • mild nausea, vomiting, or stomach pain;
  • mild itching or skin rash;
  • headache;
  • dizziness;
  • breast swelling; or
  • impotence or loss of interest in sex.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.