Itraconazole
Why has my veterinarian prescribed this medicine?
Itraconazole is an antifungal medication used to treat fungal infections in your pet. There may be other conditions for which your veterinarian may prescribe this medication.
How do I give this medication?
"This medication needs to be given for a long period of time."
- Give this medication to your pet as directed by your veterinarian. READ THE LABEL CAREFULLY.
- Give this medication with food.
- If the medicine is a liquid, measure the dose accurately.
- Try to give this medication at about the same time each day.
- DO NOT give the pet more medicine than directed.
- DO NOT give the medicine more often than directed.
- Try not to miss giving any doses.
- Generally, this medication needs to be given for a long period of time; contact your veterinarian ahead of time if your pet requires medication refills.
What do I do if I miss giving a dose?
Give the dose as soon as possible. If it is almost time for the next dose, skip the missed dose, and continue with the regular schedule. Do not give the pet two doses at once. Contact your veterinarian if you miss giving doses two or more days in a row.
How do I store this medicine?
- Keep this medicine out of reach of children.
- Store this medicine in a cool, dry place at room temperature. Store away from heat and direct sunlight.
- Do not store this medicine in the bathroom, near the kitchen sink or in damp places. The medicine may break down if exposed to heat or moisture.
What are the potential side effects?
- Your pet may experience some stomach upset, give this medication with meals.
- If symptoms of diarrhea, vomiting and lack of appetite persist, contact your veterinarian.
- Other side effects may occur, if you notice anything unusual, contact your veterinarian.
Are there any possible drug interactions?
- Make sure to tell your veterinarian if you are giving your pet any other medication or supplements.
- Quite often, your veterinarian may prescribe two different medications, and sometimes a drug interaction may be anticipated. If this occurs, your veterinarian may vary the dose and/or monitor your pet more closely.
- The following lists are examples of medicines that can potentially interact with itraconazole: antacids, cimetidine, ranitidine, didanosine, warfarin, phenytoin, cisapride, rifampin, isoniazid, acyclovir, and cyclosporin.
- The following medications should not be given with itraconazole: astemizole and terfenadine.
- Contact your veterinarian if your pet experiences any unusual reactions when different medications are given together.
© Copyright 2025 LifeLearn Inc. Used and/or modified with permission under license. This content written by LifeLearn Animal Health (LifeLearn Inc.) is licensed to this practice for the personal use of our clients. Any copying, printing or further distribution is prohibited without the express written consent of LifeLearn. This content does not contain all available information for any referenced medications and has not been reviewed by the FDA Center for Veterinary Medicine, or Health Canada Veterinary Drugs Directorate. This content may help answer commonly asked questions, but is not a substitute for medical advice, or a proper consultation and/or clinical examination of your pet by a veterinarian. Please contact your veterinarian if you have any questions or concerns about your pet’s health. Last updated on Jul 8, 2016.