VetriScience Lysine Complete Creamy Chicken Flavor Triple-Action Immune Support Supplement for Cats, 2.75-oz jar

Deal
Skip image gallery
Slide 1 of 9

At a Glance

  • Non-GMO
  • No Corn No Wheat No Soy
  • Natural
  • Immune Support
  • Digestive Health
  • Allergy Relief
  • Eye Care
  • Made in USA
  • All Lifestages
$14.50 First Time Autoship Price
this order
Save 50% (up to $20) today when you set up Autoship. 
$27.55 Autoship Price
(-5%) future orders
  • Keep saving 5% on every order
  • Get deliveries on your schedule
  • Skip, change, or cancel anytime
$29.00 Chewy Price
($10.55 /oz)
Save $8.45 (-23%)
$37.45 List Price
Promo, Spend $100, Get $30 eGift Card with code NEWYEAR
Promo, New Customers Only: Spend $49+, Get $20 eGift Card + Free Shipping with code: WELCOME
In Stock
FREE 1-3 day delivery on first-time orders over $35
Free 365-day returns

No interest if paid in full in 6 months on PayPal purchases of $149+. .

About This Item

Details

  • This powerful lysine powder supplement provides 3-in-1 immune support for cats and kittens.
  • Each daily serving contains 1000 mg of lysine to manage common symptoms of respiratory discomfort, including sneezing, watery eyes, runny nose, and low energy.
  • Prodiet Lactoferrin in the formula helps disrupt the growth of bad bacteria to promote a healthier, stronger immune response.
  • Easy to give, with a highly palatable cheesy chicken flavor loved by cats of all ages and breeds.
  • Formulated by veterinarians and nutrition experts to provide support for your cat's health and well-being.

Ingredient Information

Instructions

FAQ

Breathe Easy, Adventure Hard

VetriScience Lysine Immunity Health supplements give your cat the best daily support for respiratory, eye, and immune health. Science-backed lysine formulas for cats are made with premium ingredients and trusted by veterinarians everywhere to support strong, healthy immune systems at any age!

Advanced Formulas with Premium Ingredients

L-Lysine

An essential amino acid that promotes antibody production and helps curb respiratory discomfort.

 

Prodiet Lactoferrin

Supports and stimulates immune cells and helps to disrupt bacterial growth.

 

DMG

Helps to boost immune system response and helps the body to cope with stress.

Life's An Adventure. Lysine Helps Them Live It.

Multiple science-backed lysine formulas provide a perfect immune boost for every breed, size, and age.

  • Promote immune health
  • Strengthen immune response
  • Help them breathe easy
  • Support clean, clear eyes
  • Help manage seasonal allergies
  • Help kittens & seniors bounce back faster

No Fake Stuff. No Fillers. No Joke.

VetriScience immune support formulas use highly researched, trusted ingredients not found in other lysine supplements for cats—without fillers, hidden ingredients, or harmful preservatives. Each formula is carefully designed by veterinarians and nutrition experts, so you're only giving your cat what they need, with nothing they don't. Guaranteed.

About VetriScience

For over 40 years, VetriScience has helped pets live a life without boundaries. Premium pet supplements are formulated by veterinarians, recommended by pet professionals, and trusted by champions. VetriScience is committed to using only pure and highly researched ingredients to produce quality products that are safe, effective, and delicious!

Shop VetriScience

Frequently bought together

Questions & Answers

2 Customer Questions

How many milligrams of l-lysine are in 1 full scoop?

Answer by Chewy • Sep 21, 2025
This supplement contains 500 mg of L-Lysine per serving (1.3 grams).

How many servings are in the container?

Answer by Chewy • Aug 16, 2025
There are approximately 60 servings per container.
Reviews
Write a Review
4.1
Rated 4.1 out of 5 stars
95 Ratings
Terms & Conditions

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Effectiveness

81% Positive

Form and Administration

78% Positive

Ingredients

78% Positive

Nutritional Value

78% Positive

50 Customer Reviews

Rated 5 out of 5 stars
By Ambre on Nov 26, 2025

Chronic boogers

I have a cat who was terribly sick when found as a wee kitten. He has grown up to be sloth of a cat with gross boogers and an excellent marksmen with projectile

I have a cat who was terribly sick when found as a wee kitten. He has grown up to be sloth of a cat with gross boogers and an excellent marksmen with projectile snot rockets. He’s been on countless treatments and he always gets back to his slimy/crusty self. While I love him no matter what I do feel bad for him. So I started using this product to see if it would make any difference. Idk if it’s wishful thinking or true results but his eyes seem less goopy and his nose is less drippy, and our walls are less crusty!

Rated 3 out of 5 stars
By Margit on Dec 25, 2025

Rejected

I was hoping for a product to help him with his respiratory issues. Unfortunately, Bombay rejected anything I sprinkled it on and I bought something else. The problem

I was hoping for a product to help him with his respiratory issues. Unfortunately, Bombay rejected anything I sprinkled it on and I bought something else. The problem is not the problem, it’s just that my cat doesn’t want it.

Rated 1 out of 5 stars
By Janet on Jan 8, 2026
Top 500 Contributor

For Carl's eye herpes

I read that Lysine is good for building up an immune system, especially against eye herpes. But no matter what I put it in, Carl won't eat it. He hardly smelled

I read that Lysine is good for building up an immune system, especially against eye herpes. But no matter what I put it in, Carl won't eat it. He hardly smelled it then walked away.

Rated 1 out of 5 stars
By debbie on Dec 23, 2025

watch that search engine

i searched for taurine supplement, it brought up lysine and i didn't notice till lysine arrived, (i hate search engines that do that---replace based on nothing)

i searched for taurine supplement, it brought up lysine and i didn't notice till lysine arrived, (i hate search engines that do that---replace based on nothing)

Rated 5 out of 5 stars
By Katrina on Jan 19, 2026

works great

We use lysine for flare ups and preventing illness in high volume rescue setting. It always works great!

We use lysine for flare ups and preventing illness in high volume rescue setting. It always works great!

Rated 5 out of 5 stars
By Amber on Sep 22, 2025

Works extremely well

My two kittens developed respiratory issues because my dog had kennel cough. They were sneezing, runny nose, watery eyes and low energy. I mixed this supplement

My two kittens developed respiratory issues because my dog had kennel cough. They were sneezing, runny nose, watery eyes and low energy. I mixed this supplement with their wet food daily and they loved it. They got better within a week and a half. 10/10 recommend.

Rated 5 out of 5 stars
By Manda on Aug 15, 2025

Seems to work

My cat had been prescribed another Vetriscience product for respiratory issues, and this has the same active ingredients. I bought this to keep giving her after

My cat had been prescribed another Vetriscience product for respiratory issues, and this has the same active ingredients. I bought this to keep giving her after that ran out because she still had some lingering problems, and it seems to have helped her finally recover from whatever she had. Easy to sprinkle on her food, and she had no trouble eating it!

Rated 5 out of 5 stars
By Kathy on Sep 24, 2025

It cured cat’s intense eye discharge

This cured a semi-feral cat’s intense eye discharge and he started looking much healthier overall after a few weeks. After using the whole jar he looks almost back

This cured a semi-feral cat’s intense eye discharge and he started looking much healthier overall after a few weeks. After using the whole jar he looks almost back to full health.

Rated 5 out of 5 stars
By Allison on Aug 4, 2025

So good!

Our cats have immune reactions to stress. We started them on this a few days before we had some contractors coming to replace our counters. It was a rough day for

Our cats have immune reactions to stress. We started them on this a few days before we had some contractors coming to replace our counters. It was a rough day for everyone but no symptoms came from it! We mix it in wet food and they don’t seem to mind it.

Rated 4 out of 5 stars
By Helen on Jun 13, 2025

Helped my cat

My old calico sneezes and some brown goo comes out from her nose. I tried this product and even though she does not love the taste, I have been hiding the product

My old calico sneezes and some brown goo comes out from her nose. I tried this product and even though she does not love the taste, I have been hiding the product under her favorite delectable. I can't give her a full dose, but the half dose has helped her runny nose. She is sleeping less, following me around the house and she is not sneezing nearly as much as before.