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My cat's eye infection came back after antibiotics. What now?

Updated On September 23rd, 2025

Pet's info: Cat | Siamese | Female | unspayed

Hi, my cat had a severe conjunctivitis and we took him to the vet, he gave us some eye drops for his problem an injections of antibiotics but when his conjunctivitis seem to begin getting better he stopped with the injections and got sick again, what should I do, thanks.

1 Answer

Most Helpful Answer

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Answered By Daniel Fonza, DVM

Veterinarian

Published on September 9th, 2017

Hello and thank you for posting your question on pet coach. We commonly see cats with respiratory infections and conjunctivitis can be part of this upper respiratory infection. Many cats develop infections secondary to herpes virus, which is quite common in cats. The unfortunate thing with the herpes virus is that antibiotics do not kill the virus. The antibiotics do however help with secondary infections that are typically seen with the herpes virus. For very severe cases of herpes viral infections, there are antibiotics and antiviral eye drops you can use. I have used idoxuridine eye drops in cats with severe viral infections before and it is a hit or miss if they work or not. If she is worsening and not getting better, you may consider talking you're veterinarian about the alternative options to treat a possible viral infection. There are lysine supplements as well that you can use to lessen the severity of the herpes virus infection. The one we use at our Clinic is called duralactin with lysine. I hope this helps! Please feel free to contact me with any other questions or concerns you may have. I'm also available via phone or text consultation if needed.

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