Should I give my cat L-Lysine for immune support or is it useless?

Question

Is L-Lysine a good supplement for cats or is it just an unnecessary and useless supplement? Pet's info: Cat | Himalayan | Male | neutered | 4 years and 11 months old | 12.1 lbs

Jeffrey Milner · Accepted Answer

Historically, Lysine has been encouraged to be used among cats, especially those that tend to have upper respiratory flare ups due to underlying viral disease. Lysine was thought to be an immune-booster and thought to help prevent these flare ups from occurring or reduce the symptoms when they did. Majority of evidence that exists supporting this is anecdotal, with those in the scientific community more on the fence about its effectiveness. We know quite surely it isn’t causing any harm in most product formulations. Bottom line is that the majority of cats function and live long healthy lives with or without Lysine. Proper diet and exercise are all that should be needed to obtain the nutrients necessary to thrive.

Should I give my cat L-Lysine for immune support or is it useless?

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