Is Famotidine (Pepcid) Safe for Cats?
Why it’s conditional
Famotidine has a long history of veterinary use in cats, so a single plain tablet is unlikely to harm one. The concerns are dosing errors in small cats, combination products with added drugs, and masking symptoms of serious disease such as kidney disease, which is common in cats. Vomiting in a cat is a signal, not just a nuisance.
How to keep your pet safe
Use only plain famotidine if your vet has approved it, and store it where a cat cannot paw the bottle around. Recurrent vomiting or appetite loss deserves an exam, not home acid suppression.
Warning signs to watch for
Occasional drowsiness or mild GI upset; large ingestions may cause vomiting, diarrhea, or food refusal.
When to call the vet
Call your vet or a pet poison hotline with the product and amount if more than a single tablet was involved. Any cat vomiting repeatedly should be examined promptly.
Common questions
My cat ate one Pepcid tablet — do I need the vet?
A single plain famotidine tablet is usually harmless to a cat, so a call to your vet or a poison hotline for confirmation is enough. Confirm it is not a combination product.
Can I give my cat Pepcid for chronic vomiting?
Not on your own. Chronic vomiting in cats can mean kidney disease or other serious illness, and acid reducers can hide the clues. Your vet should investigate first.
Is the veterinary famotidine different from Pepcid?
The drug is the same, but vets dose it for the individual cat and for a defined period. That structure is what keeps a mild drug from masking a bigger problem.
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).