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Vetoquinol Tomlyn L-Lysine Immune Support Chicken and Fish Flavored Powder for Cats, 3.5 oz. Supplement Facts

Vetoquinol Tomlyn L-Lysine Immune Support Chicken and Fish Flavored Powder for Cats, 3.5 oz. is a cat immune and allergy supplement in powder form, providing 500 mg l-lysine hydrochloride per scoop.

CatImmune AllergyPowder

At a glance

1Active ingredients

Key active ingredients

L-Lysine Hydrochloride

Supplement facts

Amounts per scoop
Active ingredientAmount
L-Lysine Hydrochloride500 mg
Values above are transcribed from the product label exactly as printed. Supplements are not reviewed or approved by the FDA to treat, cure, or prevent disease, and independent testing shows label accuracy varies between brands. Always check with your veterinarian before starting a supplement.

Directions

Administer at meal time. For kittens under 6 months: For daily administration give 1/2 scoop (0.26 g) twice daily or as directed by your veterinarian. For cats 6 months and older: For daily administration give 1 rounded scoop (0.52 g) twice daily or as directed by your veterinarian. * Stiles, J., Townsend, W. M., Rogers, Q. R., & Krohne, S. G. (2002). Effect of oral administration of L-lysine on conjunctivitis caused by feline herpesvirus in cats. American Journal of Veterinary Research, 63(1), 99–103.

Ingredients

Inactive ingredients

Brewer's Dried Yeast, Hydrolyzed Fish (enzymatic), Hydrolyzed Poultry Liver (enzymatic), Mixed Tocopherols (g-preservative), Sodium Acid Dyrophosphate, Sodium Sulfate

Full ingredient list

L-Lysine Hydrochloride 500mg Other Ingredients: Brewer's Dried Yeast, Hydrolyzed Fish (enzymatic), Hydrolyzed Poultry Liver (enzymatic), Mixed Tocopherols (g-preservative), Sodium Acid Dyrophosphate, Sodium Sulfate

Frequently asked questions

What is Vetoquinol Tomlyn L-Lysine Immune Support Chicken and Fish Flavored Powder for Cats, 3.5 oz. for?

Vetoquinol Tomlyn L-Lysine Immune Support Chicken and Fish Flavored Powder for Cats, 3.5 oz. is formulated as a immune and allergy supplement for cats.

What are the active ingredients in Vetoquinol Tomlyn L-Lysine Immune Support Chicken and Fish Flavored Powder for Cats, 3.5 oz.?

Key active ingredients include l-lysine hydrochloride.

About this data

Data sources: Vetoquinolpetsusa.

Data was compiled manually and may be out of date.

Data last updated July 11, 2026.

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About this data

We gather factual supplement details from public manufacturer and retailer listings and product labels. Values are shown exactly as printed on each label. Supplements are not reviewed or approved by the FDA to treat, cure, or prevent disease, and label accuracy varies by brand. Nothing here is veterinary advice, and no product listed here is endorsed. Always check with your veterinarian before starting a supplement. Product names and trademarks belong to their respective owners.

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