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Felisyl® Immune System Support Granules (3.5 oz)

Regular Price: $12.00Sale Price: $9.99
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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 catís body needs it, but canít 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 catís vision. The L-Lysine is in a palatable poultry and fish flavored base making these granules easy to give to your cat, just sprinkle over or mix with food.

For Use In: Cats

Usage Information

Sprinkle measured amount over cat’s food and mix in. This product is intended for intermittent or supplemental feeding only.

Age of Cat Morning Evening
Under 6 months 1/2 Scoop 1/2 Scoop
Over 6 months 1 Scoop 1 Scoop


Guaranteed Analysis per (1 cc Scoop):
(All values are minimum quantities unless otherwise stated.)
Moisture (max) 1.1%
L-Lysine 78% (250 mg)
Ingredients: L-Lysine, Chicken Liver Powder, Fish By-Products, and Sugar.

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® L-lysine Gel for Cats (15 oz)3-PACK Felisyl® L-lysine Gel for Cats (15 oz)
Reg price: $38.99
Sale price: $29.99
6-PACK Felisyl® L-lysine Gel for Cats (30 oz)6-PACK Felisyl® L-lysine Gel for Cats (30 oz)
Reg price: $74.08
Sale price: $56.99
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

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