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

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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
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About This Item

Details

  • This 3-in-1 lysine immunity supplement is designed to boost immune health and support immune cells in cats and kittens.
  • Daily lysine may help your feline manage sneezing, watery eyes, runny nose, and low energy levels.
  • Lactoferrin helps disrupt the growth of bad bacteria to promote a strong immune response.
  • Features a cheesy chicken taste for maximum flavor and easy serving.
  • Ultimate Strength Lysine Immunity Health was formulated by a team of veterinarians and nutrition experts for effective immune support.

Ingredient Information

Instructions

FAQ

It's possible to support your cat's health with targeted daily nutrition. VetriScience Lysine Immunity Health supplements are formulated to help support eye health, immune system function, and healthy respiratory function. Available in multiple formats, the formulas are designed to fit easily into your cat's daily routine.
Lysine Immunity Health is formulated to support healthy respiratory function and everyday immune wellness. The supplement helps promote comfortable breathing, provides antioxidant support, and helps maintain healthy eye, nose, and lung function. Daily use supports overall respiratory health for cats.
Cats may benefit from additional immune and respiratory support during travel, routine changes, aging, or when living in multi-cat households. Lysine Immunity Health is formulated to help support cats through these everyday situations by promoting immune health and healthy respiratory function.
VetriScience offers Lysine Immunity Health in both soft chew and powder forms, making it easy to choose the option that best fits your cat's preferences and daily routine. Each format delivers the same targeted support for immune, eye, and respiratory health.
Lysine Immunity Health features carefully selected ingredients that work together to support immune function. L-Lysine helps support immune health and antibody production, while DMG (Dimethylglycine) helps promote your cat's natural immune response. ProDiet Lactoferrin helps support immune cell activity and healthy intestinal function for comprehensive daily wellness.
Every VetriScience Lysine Immunity Health formula is developed to provide condition-specific support backed by science. The combination of researched ingredients and veterinarian-formulated nutrition helps maintain immune health, respiratory wellness, and overall vitality through convenient daily supplementation.
VetriScience is committed to creating science-backed nutritional supplements that help pets live healthier lives. The Lysine Immunity Health line delivers targeted daily support with trusted ingredients and multiple delivery formats to help cats maintain lifelong immune and respiratory health.

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Questions & Answers

3 Customer Questions

Can we start giving it to kittens at 6 weeks old?

Answer by Chewy • Apr 28, 2026
This VetriScience supplement is formulated for kittens starting at 3 months of age. For kittens under 3 months old, please consult your veterinarian.

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
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4.1
Rated 4.1 out of 5 stars
121 Ratings
Terms & Conditions

Customers Mention

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

Dosage and Administration

81% Positive

Duration of Relief

77% Positive

Ease of Digestion and Tolerance

73% Positive

Effectiveness in Reducing Allergy Symptoms

82% Positive

56 Customer Reviews

Rated 5 out of 5 stars
Received Free Product
By Amber C on Aug 23, 2024

Easily digestible for IBS kitties

Been using the Lysine complete as a mix in for wet food for my kitty that has been diagnosed with IBS. Shes a picky eater and is on a single source protien diet

Been using the Lysine complete as a mix in for wet food for my kitty that has been diagnosed with IBS. Shes a picky eater and is on a single source protien diet. The lysine mixes in well with the wet food and no issues with getting the little IBS picky eater to comsume. Its a little early to say if its impacting a potive change but no adverse reactions with supplementing lysine complete with oral steroids. I do think that some skin irritation is down, especially redness around the ears using lysine complete. The product container is easy to open and has a wide opening that makes scooping the powder easy. Overall I will continue supplementing with Lysine to see if there are long term benefits.

Rated 5 out of 5 stars
Verified Purchase
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 4 out of 5 stars
Received Free Product
By Unscented cat litter on Sep 3, 2024

Great immune support

I gave this to my 13 year old cat. She has had lots of sneezing. Watery eyes and the last few months has been a little more tired than usual. After taking this for

I gave this to my 13 year old cat. She has had lots of sneezing. Watery eyes and the last few months has been a little more tired than usual. After taking this for a few weeks. She has had less sneezing, no more watery eyes and has had much more energy. She has been having the constant zoomies at night. She would not eat in dry food but she ate it with no problem in her wet food.

Rated 2 out of 5 stars
Verified Purchase
By Jennifer on Sep 21, 2024

Made my senior cat vomit

Our cat had successfully been on L-Lysine powder for 13 years until we bought VetriScience when Vetoquinol Viralys was out of stock. After 7 days on VetriScience,

Our cat had successfully been on L-Lysine powder for 13 years until we bought VetriScience when Vetoquinol Viralys was out of stock. After 7 days on VetriScience, he began vomiting right after eating his wet food with the powder mixed in. You must give such a large scoopful twice daily since it contains other supplements besides L-Lysine, so I’m guessing the other supplements are causing him to not keep this powder down. Now that Vetoquinol is back in stock, I hope we can get a refund and get our kitty back on track!

Rated 5 out of 5 stars
Received Free Product
By Rmann1218 on Jul 23, 2024

Working so far!

Loving it so far! Both our cats really have enjoyed this, while they usually aren’t picky on flavor either, they ate it with their normal breakfast for the past

Loving it so far! Both our cats really have enjoyed this, while they usually aren’t picky on flavor either, they ate it with their normal breakfast for the past couple days without any issue. Our Maine coon mix, she usually will have respiratory discomfort at times, especially during Allergy season. This definitely seemed to subside her sneezing fits and runny nose, although I will keep using it especially on her to see further results. She was even licking her lips after looking for more!

Rated 4 out of 5 stars
Verified Purchase
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.

Rated 4 out of 5 stars
Received Free Product
By Rachel on Aug 7, 2024

Good so far!

I have 3 cats and they can be pretty picky. All 3 eat it with no problems. I just mix it into their wet food. It doesn’t smell bad and Mochi would eat it right out

I have 3 cats and they can be pretty picky. All 3 eat it with no problems. I just mix it into their wet food. It doesn’t smell bad and Mochi would eat it right out of the container if I let her. The powder mixes nicely with the other supplements they get & I love that it comes with a scoop! I’ve noticed a difference with one cat so far. She gets watery eyes sometimes and I haven’t been noticing any of that lately.

Rated 5 out of 5 stars
Received Free Product
By PKKS on Jul 28, 2024

Hit with our senior farm cat

Our senior cat has been very pleased with this supplement thus far! Normally she is picky with any sort of food addition but she is happily eating this topped right

Our senior cat has been very pleased with this supplement thus far! Normally she is picky with any sort of food addition but she is happily eating this topped right on her dry food. Too soon to tell if this is helping her health, but just glad to finally have a supplement for cats that they like! It is also easy to measure, and sticks to the dry food well, instead of some powdered supplements just falling to the bottom of the bowl.

Rated 5 out of 5 stars
Received Free Product
By Maggie on Aug 18, 2024

Easy way to boost their health!

I have one indoor cat and two outdoor cats. The outdoor cats are subject to so many dangers, I know, but knowing that I can give them a scoop of VetriScience Lysine

I have one indoor cat and two outdoor cats. The outdoor cats are subject to so many dangers, I know, but knowing that I can give them a scoop of VetriScience Lysine twice a day to boost their immunity helps me so much. They aren't fans of treats so chewable supplements are lost on them. Sprinkle a little extra chicken on their meals and the rest is history!

Rated 5 out of 5 stars
Verified Purchase
By Alyssa on Apr 16, 2025

Great stuff, so glad to find!

This powder is good stuff and seems to be helping my boy kitty with his runny nose. Have had trouble with other powder mix-in supplements being not tolerated well

This powder is good stuff and seems to be helping my boy kitty with his runny nose. Have had trouble with other powder mix-in supplements being not tolerated well and kitty would end up not eating his wet food with the stuff sprinkled on it. That is not the case with this triple cheesy stuff. He always eats his wet food with no problem when it's got a scoop of the Lysine Complete in it. He seems to prefer it slightly mixed in to the wet food, so it's still tasty, but not fill his mouth with a dry powdery texture. I sometimes do a third scoop a day because his nasal runnies really have been persistent.