Ketoconazole (Rx)

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Ketoconazole (Rx)

Why our vets recommend it

Ketoconazole effectively treats fungal and yeast infections, including ringworm.

 
 
 
 

Medication information

What is Ketoconazole?

Ketoconazole is a prescription drug used to treat certain fungal and yeast infections in dogs and cats, including ringworm. It’s also used to treat Cushing’s disease.

What does Ketoconazole treat?

Conditions that Ketoconazole treats include:

  • Certain fungal infections (including ringworm)
  • Certain yeast infections
  • Skin infections (dermatitis)
  • Cushing’s disease

How is Ketoconazole given?

Give Ketoconazole orally with food according to the instructions provided by your veterinarian. Do not stop this medication or change dosage without explicit instructions from a professional.

Who is Ketoconazole for?

Cats and dogs

What are the active ingredients of Ketoconazole?

Ketoconazole

 

Generic form of Nizoral or Ketochlor

What are the possible side effects of Ketoconazole?

The most common side effects of Ketoconazole are loss of appetite, vomiting, diarrhea, and weight loss. Other potential side effects include liver toxicity, haircoat color change, and cataracts. Side effects are more common in cats. See the insert for more information on side effects.

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Safety Information

  • Do not use in dogs with liver disease or known hypersensitivity to ketoconazole. Requires an acidic environment for absorption — do not give with antacids. Monitor for signs of liver toxicity during treatment.1

  • Cats are more sensitive to ketoconazole than dogs and may experience more severe side effects.

Warnings 

For veterinary use only. Monitor liver function during extended treatment periods.1

Human Warnings

While ketoconazole is also used in human medicine, do not take medication prescribed for your pet. Human and veterinary formulations differ in dosage and may cause harm. Pregnant women should avoid handling this medication.1

 

References

  1. “Ketoconazole (Nizoral).” VIN, veterinarypartner.vin.com/default.aspx?pid=19239&id=4951403. 
  2. “Ketoconazole for Dogs.” PetMD, www.petmd.com/pet-medication/ketoconazole. 
  3. "Antifungals for Integumentary Disease in Animals - Pharmacology." Merck Veterinary Manual, www.merckvetmanual.com/pharmacology/systemic-pharmacotherapeutics-of-the-integumentary-system/antifungals-for-integumentary-disease-in-animals#Ketoconazole_v3330960.