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Question:

Is it normal for a cat to foam at the mouth 15 mins after administering a medication?

I'm feeling really concerned about my cat, Snickers, and I could really use some advice. He's a pretty laid-back guy typically, but today I gave him his new medication from the vet, and about 15 minutes later, I noticed something unusual. His mouth started foaming, which I've never seen before and it really freaked me out. I followed the vet's instructions to the letter, and I’m just worried because I don’t know if this is a normal reaction or something I should be more worried about. Has anyone else experienced this with their pets after giving them medication? Snickers seems alright otherwise, but I'm torn on whether I should rush him back to the vet or if I’m just overreacting. Would love any advice or similar experiences anyone can share. Thanks so much!

Answer:

Hi there! Seeing your cat foam at the mouth after giving medication can definitely be unsettling, and I'm here to help.



Foaming at the mouth in cats is actually a fairly common reaction when they taste something they find unpleasant or bitter. Their bodies produce more saliva to try to expel the taste, which can result in foaming. This might be the case if the medication has a bitter taste or wasn’t swallowed completely.



To help your cat, try wrapping the pill in a small treat next time, or ask your vet if there’s a flavored liquid form or something easier for your cat to accept. After giving the medication, offering a little water or a favorite treat can help them wash down any residue, too.



However, if the foaming is accompanied by other symptoms like difficulty breathing, vomiting, or any signs of distress, that could indicate a more serious reaction, and you should reach out to a vet right away.



Keep an eye on your cat for any persistent or worsening symptoms. If you’re still concerned or if these symptoms continue, I’d recommend booking a video consult with one of our vets on Dial A Vet. We’re here to ensure your furry friend’s health and happiness!

Answered by

Louise - Senior Veterinary Nurse, Dial A Vet

June 21, 2025

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The "Ask a Vet" forum on Dial A Vet offers general information and helpful tips on pet health, but it's not a substitute for professional veterinary care. The advice here doesn't create a veterinarian-client-patient relationship, and our vets can't diagnose or treat your pet remotely. For emergencies or specific medical concerns, always contact your local veterinarian immediately. Your pet's health is unique, and decisions should only be made after consulting with a qualified professional. By using this forum, you acknowledge these limitations and agree to seek in-person veterinary advice for all your pet's health needs. View our content guidelines.
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