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Felisyl Immune System Support

Felisyl Immune System Support. Granules, Soft Chews, and Gel; Contains Cat-Essential Amino Acid L-Lysine, Helps Support Respiratory Health; Maintains Normal Eye Function and Health

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Poultry and Fish Flavored Granules, Chicken Flavored Soft Chews, Salmon Flavored Gel


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 is an essential amino acid, which means that your cat's body needs it, but can't produce it, so this supplement is a perfect choice to provide that necessity.

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