Is Fluconazole (Diflucan) Safe for Cats?
Why it’s a problem
Fluconazole is prescribed to cats by vets, so the drug itself is workable at feline doses, but human tablets deliver a lot of drug for a small body. The usual result of an accidental dose is nausea, drooling, vomiting, and food refusal. Repeated or large exposures can burden the liver.
How to keep your pet safe
Store Diflucan blister packs out of a cat’s reach and never give leftover antifungals to a cat. Fungal disease in cats needs a diagnosis and a cat-sized plan from a vet.
Warning signs to watch for
Drooling, vomiting, diarrhea, refusal to eat, hiding, low energy; heavy exposure can cause jaundice or other liver-related signs.
When to call the vet
Call your veterinarian or a pet poison hotline with the estimated amount. If your cat refuses food for more than a day, arrange an exam.
Common questions
My cat chewed one Diflucan tablet — should I rush anywhere?
A single tablet is more likely to cause nausea than a crisis in a healthy adult cat, but a call to your vet or a poison hotline is still the right move. Kittens and cats with liver disease need faster attention.
My cat will not eat since swallowing my antifungal — what now?
Food refusal in cats can escalate within a day or two, so contact your veterinarian. Persistent anorexia is treated as a real problem, not a phase.
Can I share my fluconazole with my cat’s ringworm?
No. Ringworm treatment for cats involves topical and systemic choices a vet makes, and human tablets are not dosed for cats.
More medications hazards for cats
This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate or touched something concerning, contact your veterinarian or a pet poison hotline right away. In the US: Pet Poison Helpline (855) 764-7661, ASPCA Animal Poison Control (888) 426-4435 (fees may apply).