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What supplements help a cat with calicivirus boost its immune system?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Male | neutered | 8 years and 2 months old

Is there any alternative treatments to help boost immune system for a cat with calicivirus?

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on March 8th, 2017

You can give Charlie an L-lysine supplement - this is an amino acid that has been shown to help the immune system fight off respiratory infections more effectively. Enisyl and Viralys are both good brands, and can be purchased over the counter without a prescription - just follow the dosing instructions on the label based on your cat's weight.

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