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What Are the Uses of Ketoconazole for Dogs?

A dog should be encouraged to drink a lot of water while taking the medication ketoconazole.
Certain medications can have negative drug interactions with ketoconazole in dogs.
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  • Written By: Anna Harrison
  • Edited By: E. E. Hubbard
  • Last Modified Date: 29 September 2014
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Ketoconazole for dogs is a prescription anti-fungal medication that is often used to treat different types of infections. It works by reducing the growth of fungal organisms, and also prevents cortisol from forming within the adrenal glands. While very successful in treating dogs, it has several side effects and should be used with caution. It may also interact with many other types of drugs. The dosage given varies according to the weight of the dog and the type of infection being treated.

The uses of ketoconazole for dogs includes fungal diseases such as ringworm or yeast infections. Other conditions are also treated with this medication, including Cushing’s disease, which occurs when the adrenal glands overproduce cortisol. It is also given to dogs for more serious diseases such as cryptococcus, which affects the eyes, lymph nodes, and lungs, as well as skin, and bones. Ketoconazole for dogs is only for fungal infections and is not effective in treating bacterial or viral infections.

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There are many different ketoconazole drug interactions in dogs, so it is very important to know the animal’s medical history before it is prescribed. The veterinarian should be informed about any medical conditions that the dog has had in the past, and other medications that have been given. Ketoconazole should not be taken by dogs that have had problems with blood clotting, stomach ulcers, or liver disease. In addition, dogs that have had allergic reactions to similar medications, such as other anti-fungal drugs, should not be give this medication. It cannot be given to pregnant dogs, as it will result in the death of the fetus(es).

The ketoconazole dosage for dogs is usually 200 mg, which is available in tablet form and also as a topical cream. It should always be given with food to prevent side effects, especially stomach upset. If the dog is taking any type of antacid, it should be given at least two hours prior to taking ketoconazole.

The dog should be encouraged to drink a lot of water while taking this medication. Most dogs are required to stay on this medication for several weeks. Ketoconazole should be taken until all prescribed pills are gone, even if the dog’s symptoms disappear.

In addition to stomach upset, other side effects of ketoconazole for dogs include diarrhea, dizziness, and headache, as well as itching and fatigue. If applied to the skin, it may cause discoloration or dryness of the coat. Other more serious side effects are fairly uncommon and include possible liver damage. Rarely, it may cause jaundice and hepatitis.

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anon351782
Post 4

It's been 25 days and my dog has still not improved with ketaconazole medication. He gets 200mg once a day. I have read that it can take several weeks to show improvement but I'm sure he is getting worse. Also I'm concerned about the risk of liver damage.

bear78
Post 3

My dog is on this for Cushing's disease. It's a very high dose, 200mg three times a day, so 600mg/daily. It's too soon to know if the medication is working but she's having so many side effects from it. She doesn't eat as much and when she does eat, she gets diarrhea. I also heard that antifungal medications are very hard on the liver and long-term use can cause liver failure.

I can manage the diarrhea with pumpkin puree, potatoes and rice but I'm very worried about this drug damaging her liver.

Does anyone else have a dog with Cushing's disease? Is your dog on ketoconazole? What has been your experience on the drug?

burcinc
Post 2

@ysmina-- I'm not sure, maybe it's a yeast infection? Can you check with the vet?

My dog was on ketoconazole cream when he had a yeast infection. I think it's a great drug, it relieved his itching and treated the infection in little over a week.

ysmina
Post 1

Has anyone heard of ketoconazole being given for an ear infection? My son's dog is on this and my son said that he has an ear infection. I thought that ear infections are usually bacterial and not fungal. Isn't this odd?

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