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Felisyl® Immune System Support (60 Soft Chews)

SKU: 5939
Regular Price: $24.99Sale Price: $9.99
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Felisyl® is a soft chew 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 pet'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 Soft Chews for Cats also helps maintain healthy tissue, supports respiratory health, and may even help with your cat's vision. The L-Lysine is in a chicken liver flavored soft chew making it easy to give to your cat.

For Use In: Cats

Usage Information

Feed soft chew directly to cat or crumble over food. This product is intended for intermittent or supplemental feeding only.

1-2 soft chews daily.


Guaranteed Analysis per (Soft Chew):
(All values are minimum quantities unless otherwise stated.)
Moisture (max) 8.6%
L-Lysine 16.6% (250 mg)
Ingredients: L-Lysine, Natural Chicken Liver Flavor, Oat Flour, Rye Four, Soy Lecithin, Brewers Dried Yeast, Water, Arabic Gum, Glycerin, Canola Oil, Maltodextrin, Sodium Alginate, Calcium Sulfate, Citrus Pectin, Oat Meal, Sorbic Acid (preservative), Propionic Acid (preservative), and Mixed Tocopherols (preservative).

Customer Reviews

DISCLAIMER: The results described on the testimonials on this site, are the individual experiences and personal opinions of those who have purchased and used the products. These testimonials are not intended to make any claims that the products can be used to diagnose, treat, mitigate, cure or prevent any disease or medical condition.

Questions and Answers

NASC Certified

This product has met all of the stringent quality and safety standards set by the NASC.

The NASC (National Animal Supplement Council) is a non-profit self regulatory group that set specific guidelines to which manufactures must strictly adhere.

This seal is meant to minimize risk by providing an easy way of communicating to consumers that a product and its manufacturer meet particular standards of quality, customer safety and service.

Those products that have the seal for NASC Quality and Safety standards have been strictly audited and were determined as meeting the following criteria:

  • Consistent manufacturing quality control
  • A system for evaluating complaints and adverse events
  • Clear and accurate labels compliant with codes and restrictions for all forms of labeling
3-PACK Felisyl® Immune System Support Granules (10.5 oz)3-pk Felisyl Immune
Reg price: $47.58
Sale price: $27.99
6-PACK Felisyl® Immune System Support Granules (21 oz)6-PACK Felisyl® Immune System Support Granules (21 oz)
Reg price: $65.99
Sale price: $53.99
3-PACK Felisyl® Immune System Support (180 Soft Chews)3-PACK Felisyl® Immune System Support (180 Soft Chews)
Reg price: $50.99
Sale price: $27.99
6-PACK Felisyl® Immune System Support (360 Soft Chews)6-PACK Felisyl® Immune System Support (360 Soft Chews)
Reg price: $97.99
Sale price: $53.99

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