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My cat has a watery eye. Should I reuse old eye infection meds?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 5 lbs

my cat has one watery eye. she can still open it and is behaving normally. she has had an eye infection a few weeks ago and we're prescribed erythromycin gel. should we use that again?

1 Answer

Most Helpful Answer

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Answered By Destini R. Holloway, DVM

Veterinarian

Published on November 27th, 2016

If the eye discharge is clear then an infection is not present, so you don't have to use the eye gel (erythromycin). Instead you should use an anti-viral supplement such as Lysine gel/powder from your local pet store or vet clinic. Cats are prone to viral infections which can cause watery eye discharge and reddish discharge. The use of antibiotics is only needed when a secondary infection is also present. Lysine powder/gel can be given throughout Richard's lifespan to help boost her immune system and help ward off future viral infections (i.e. herpesvirus).

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