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.

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. Felisyl L-Lysine HCL Immune System Support for Cats also helps maintain healthy tissue, supports respiratory health, and may even help with your cat's vision. The L-Lysine is in palatable poultry, and the flavored fish base was making these granules easy to give to your cat, sprinkle over or mix with food.

Immune Support for Cats 

Fuel your pet with the supplements they need to remain healthy and boost their immune system with cat health supplements that add much-needed nutrients and amino acids to continue being active.

L-Lysine 

L-Lysine is an essential amino acid that your pet?s body doesn?t produce, so this supplement is the perfect aid that helps support your pet?s immune system so that it can function normally and produce antibodies. L-Lysine also helps maintain healthy tissue supports respiratory health.

Pet Health Supplement 

A healthy immune system and eye health are essential for cats of any age. Ensure your furry friend remains active with healthy vision with these pet health supplements that help support normal inflammatory response and help support cat-eye health.