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Felisyl Immune System Support Granules

This page contains information on Felisyl Immune System Support Granules for veterinary use.
The information provided typically includes the following:
  • Felisyl Immune System Support Granules Indications
  • Warnings and cautions for Felisyl Immune System Support Granules
  • Direction and dosage information for Felisyl Immune System Support Granules

Felisyl Immune System Support Granules

This treatment applies to the following species:
Company: PHS

Veterinarian Recommended


For Cats

Guaranteed Analysis Per Scoop (1 cc):

(All values are minimum quantities unless otherwise stated.)

Moisture (max)


L-Lysine HCl

78% (250 mg)

Ingredients: L-Lysine, Proprietary Blend of Poultry and Fish Flavoring, and Beet Sugar.

Store in a dry place. Keep container at room temperature.

Felisyl® is a supplement that contains the amino acid L-Lysine for use in cats and kittens for conditions responsive to L-Lysine. L-Lysine HCL Immune System Support for Cats helps keep your cat healthy by supporting the immune system naturally so that it can function normally and produce antibodies.

Feeding Directions:

Sprinkle measured amount over cat’s food and mix in.

This product is intended for intermittent or supplemental feeding only.

Age of Cat



Under 6 months

1/2 Scoop

1/2 Scoop

Over 6 months

1 Scoop

1 Scoop

For animal use only. Keep out of the reach of children and animals. In case of accidental overdose, contact a health professional immediately.

Distributed by: PHS® Pet Health Solutions, Inc., 34501 Seventh St., Union City, CA 94587





3.5 oz (100 g) 310 Servings



CPN: 6210037.2

34501 7TH ST., UNION CITY, CA, 94587
Toll-Free:   877-564-6862
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Copyright © 2023 Animalytix LLC. Updated: 2023-02-28