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Can L-lysine help my kitten with an upper respiratory infection?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Female | spayed | 2 months and 14 days old | 10 lbs

What it is a vet recommend L-lysine for a kitten of 11-12 weeks and will it help her fight her upper respiratory infection? Thank you

1 Answer

Most Helpful Answer

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Answered By Ana M, DVM

Veterinarian

Published on July 5th, 2018

Thank you for submitting your question regarding Mimi. L-lysine is an amino acid supplement that may help with herpes virus infections in cats. Feline herpes tends to be exhibited as an upper respiratory tract infection with possible eye problems as well. It has been debated in current research as to whether it is effective or not. However, I have had some patients benefit from it. If it does not help, it will not be harmful to your kitten. I hope this information helps!

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