Why is my cat acting strange after flea spray? Is he poisoned?

Question

My cat had fleas and last night we sprayed him with a spray-on flea medicine. About 20-30 minutes after we sprayed him he began acting strange. He keeps staying crouched down and his ears are bent back and keep twitching. He is slouching when he walks. And he keeps hiding behind our book case. Pet's info: Cat | Mixed Breed | Male | neutered | 4 years and 5 months old | 5 lbs

Jessica Keay, DVM · Accepted Answer

I am sorry to hear about Elijah. The name of the flea product may help us better answer your question. Some cats are very sensitive to certain drugs that are used for fleas in dogs, so if the medication is not specificallly labeled for cats it could be a toxicity. If he is twitching/trembling, acting drunken, excessively drooling then I would recommend bringing him in to the vet right away. Some cats also are sensitive to the topical products even designed for cats and can cause irritation of the skin https://veterinarypartner.vin.com/default.aspx?pid=19239&id=6386334 . Bathing with dawn dish soap can help remove the product and you can contact your vet for an oral flea prevention such as Comfortis, which is much more effective than a spray.

Why is my cat acting strange after flea spray? Is he poisoned?

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