Petco Text Logo
Petco Pet Logo

My cat threw up after Sentry flea treatment. Is it dangerous?

Updated On September 23rd, 2025

Pet's info: Cat | Siamese | Male | neutered

Good evening, my wife and I applied Sentry PurrScriptions flea and tick medicine to our three cats, within minutes two of them had thrown up. We didn't see them lick themselves but it's quite possible they could have. After googling it I was scared by countless horror stories caused by Sentry. The cats are acting normally, but I just wanted to double check.

1 Answer

Most Helpful Answer

Image profile

Answered By Dr. Strydom, DVM

Veterinarian

Published on December 29th, 2017

Yes, Sentry products are not recommended. If you need flea prevention you should get it from your vet. My recommendation would be to try and wash off that medication ASAP. Use Dawn dishsoap to wash the cats since it will cut through the oils in the skin. Be sure to rinse them thoroughly and dry them with towels (not hair dryers). If they start showing any other symptoms, especially neurologic symptoms, they need to get to a vet as an emergency. Hope this helps. Sorry this happened. Best wishes.

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored