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VetriScience Vetri-Lysine Plus Immune Health Bite-Sized Cat Chews

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VetriScience Vetri-Lysine Plus Immune Health Bite-Sized Cat Chews provide lysine, an essential amino acid that must be given to your kitty through her food or supplements. This advanced formula supports her respiratory and immune systems with lysine and DMG and also builds collagen to keep her skin and coat healthy and shiny. It’s recommended by veterinarians and easy to administer in a tasty chicken-flavored bite-sized chew.

Key Benefits

  • Lysine is an essential amino acid for felines that must be ingested through food or supplements
  • Recommended for cats that need added immune support, respiratory health support and for other conditions that are responsive to lysine
  • Advanced formula supports respiratory and immune systems with lysine and DMG and also builds collagen to keep your cat’s skin and coat healthy and shiny as well as support eye health in kittens
  • Recommended by veterinarians and easy to administer in a tasty chicken-flavored bite-sized chew
  • Lysine is often recommended to support immune health-especially when cats are being boarded or live in a multi-cat household


Safe use in pregnant animals or animals intended for breeding has not been proven. If animal's condition worsens or does not improve stop product administration and consult your veterinarian. For animal use only. Keep out of reach of children. In case of accidental overdose, contact a health professional immediately.

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  • Item Number
  • Food Form
  • Lifestage
    Adult, All Stages
  • Made in
    United States
  • Supplement Form

Nutritional Info


  1. Active Ingredients: L-Lysine, N,N-Dimethylglycine HCl (DMG). Inactive Ingredients: Arabic Gum, Brewers Yeast, Calcium Sulfate, Canola Oil, Chicken Liver Flavor, Citric Acid, Citrus Pectin, Glycerin, Maltodextrin, Mixed Tocopherols, Oat Flour, Propionic Acid, Rosemary Extract, Rye Flour, Silicon Dioxide, Sodium Alginate, Sorbic Acid, Soy Lecithin, Vegetable Oil, Water.

Feeding Instructions

Adult Cats: Give 1 or 2 chews, twice daily. Kittens: Give 1 chew, twice daily.

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Advanced Formula for Immune System Support

Vetri Lysine Plus is a daily supplement that's recommended by veterinarians to support immune, eye and respiratory health and to alleviate symptoms of the feline herpes virus. These bite-sized chews combine the active ingredients L-lysine and DMG in a delicious treat that's safe for cats of all sizes.

VetriScience Vetri Lysine Plus
Formulated and Approved by Veterinarians

Formulated and Approved by Veterinarians

VetriScience uses veterinarian feedback to develop condition-specific products for common pet health issues. Vetri Lysine Plus was designed to support your cat's immune system and normal respiratory function, and to help clear up watery eyes. The active ingredients help the body to repair tissue and produce the antibodies needed to fight infections such as URI.

Powerful Active Ingredients

The secret behind Vetri Lysine Plus is a synergistic blend of two active ingredients that support immune system function. The amino acid L-lysine supports the production of antibodies to help neutralize bacteria and viruses. It also plays a part in collagen formation and tissue repair to promote healthy skin and help heal wounds. DMG is included to strengthen your cat's immunity so she can ward off viruses and illness more easily.

Time-Tested Ingredients

About VetriScience

As the makers of GlycoFlex and an extensive line of pet supplements, VetriScience Laboratories is a leader in the pet health industry. For over 40 years, VetriScience has led the way by providing exceptional and innovative supplements created for the health and well-being of companion animals. They are committed to using only pure and highly researched ingredients to produce quality products that are safe and effective.

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About VetriScience

Customer Reviews

VetriScience Vetri-Lysine Plus Immune Health Bite-Sized Cat Chews is rated 4.5 out of 5 by 235.
Rated 5 out of 5 by from 1 out of 2 kitty approved I was excited and had high hopes my two kitties would enjoy these Lysine treats so I wouldn't have to orally give it to them 2x a day. (They're prone to Upper Respiratory infection/runny eyes). The bag is horrendous smelling like every review mentions; but I just hold my breath and get the treats out quickly and close up. First day both my older cat (10yrs, Tigger) and "baby" (1yr, Jaguar) ate it fine. They are harder pieces, but easily cut through with a butter knife or other item. Second day Jaguar ate it and has ever since (going on two weeks), but the older one has never wanted to touch it again. I just give Tigger his orally with the gel the vet gave. No worries. Both cats seem to do very well on Lysine. I will look at the others treat options on here and see if I Tigger will try another.
Date published: 2016-12-05
Rated 5 out of 5 by from Helped with runny eye and sneezing Bought these when I adopted my cat from Humane Society, and she had a runny eye and sneezing. Within 2 days she was fine and has been since. They smell bad but my cat seems to like them. 2 am - 2 pm. Cat is 7.5 pounds
Date published: 2017-01-15
Rated 5 out of 5 by from Happy With Product A friend, who is a vet tech, recommended the treats for my sneezing kitty. She doesn't like them at first, but by the time i come home, they are gone. Unless she is storing them somewhere.
Date published: 2017-01-07
Rated 2 out of 5 by from Not for our kitty We tried these and they easily become hard and dried out if you don't seal the bag properly. Either way, sealed or not, our cat hates them, so therefore they are of no help to his health. We buy the enisyl-f lysine bites instead. Way better product and our cat loves them and they really work for his weepy eye and sneezing. These may have worked too, but he won't eat them.
Date published: 2016-12-29
Rated 5 out of 5 by from My Cats Love These! Prescribed by my vet for one of my cats who is older and prone to health problems. Now I have to give them to 2 of my babies!! The third cat doesn't care for them, but he's a younger cat and really doesn't need them. Loved the speedy service chewy.com provides!
Date published: 2017-01-13
Rated 5 out of 5 by from Keeps my cat healthy I buy these every winter for my 11yr old boy because he gets sneeze as cold weather hits. With these treats his sneezing and allergies go away. I feed these to both of my cats and they both go crazy for them.
Date published: 2017-01-26
Rated 5 out of 5 by from Easy to administer Recommend by my Veternarian as a supplement to my kittens diet. I give her one treat twice a day. She likes the treats so it's a "win-win" for both of us.
Date published: 2017-01-14
Rated 4 out of 5 by from Helps with my FIV positive cat None of my cats like the taste of these. Also they are fairly large. So I have to break them in half, and coat them with a powdered flavor enhancer that the cats enjoy in order to get them to eat these. Even then, sometimes they just lick the powder off! It can be frustrating. I do think these are VERY effective, however, once the cats eat them, and that is why I give them 4 stars. I take care of a sick cat, and he has been doing better since we started including these with his diet.
Date published: 2016-12-06
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