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My kitten drank Diet Pepsi. Is it harmful? What should I watch for?

Updated On September 23rd, 2025

5 month old psycho kitten just drank a few laps of Diet Pepsi before I could stop her. Do I need to worry?

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Answered By Amber W

Veterinarian, Certified Veterinary Acupuncturist

Published on September 3rd, 2017

What a cute kitten! I few small licks of Diet Pepsi are unlikely to harm your kitten but because the caffeine is not good for cats I would still monitor for overexcitement, vomiting, diarrhea, inappetance or lethargy. If any of these signs occur I would take your kitten to see your veterinarian. I would also hide your soda from your kitten in the future. Thanks for using Petco Pet Education Center, formerly Petcoach!

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