NaturVet L-Lysine Plus Antioxidants Soft Chews Immune Supplement for Cats, 60 count

$5.99 First Time Autoship Price
this order
Save 50% (up to $20) today when you set up Autoship. 

$11.39 Autoship Price
(-5%) future orders
  • Keep saving 5% on every order
  • Get deliveries on your schedule
  • Skip, change, or cancel anytime
$11.99 Chewy Price
($0.20 /ea)
Save $5.00 (-29%)
$16.99 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

  • Formulated by veterinarians to help bolster your feline friend's immune system.
  • A great option for cats that are responsive to L-lysine, an essential amino acid that promotes a regular respiratory system.
  • These beneficial chews also help support your furry friend's eye health.
  • Comes in a yummy soft chew form that tastes like a treat.
  • L-Lysine Immune Support is purr-fect for cats ages 12 weeks and older.

Ingredient Information

Instructions

FAQ

About NaturVet Vitamins and Supplements

Solution-Based Products

Whether you want to get ahead of problems down the line or address a specific health issue, NaturVet has the perfect supplement for your pet. Choose a proactive supplement to enhance overall health and wellness, or pick a solution-based supplement that targets specific ailments directly. Your furry family members deserve the best nutrition-based wellness care you can give them!

L-Lysine Supplement

L-Lysine can’t be produced by the body, so it must come from diet or supplementation. This essential amino acid works as a building block for protein and plays an important role in feline body functions and overall health. NaturVet’s immune supplement contains added antioxidants that work synergistically with the L-lysine, to help support strong immunity and eye health in your cat.

Hairball Helpers

Cats naturally ingest hair as a normal part of grooming, but sometime the hair gets stuck in the digestive tract and forms a troublesome ball. Help reduce hairball discomfort and vomiting and help stop future issues with these veterinarian-formulated and recommended daily hairball supplements. Your kitty will feel better and so will you!

Urinary Support for Cats

Harness the power of cranberry to support urinary tract and bladder health in your cat. Cranberry relief is packed with antioxidant- and vitamin-rich cranberry extract to promote proper urinary and bladder function, plus echinacea to support a strong immune system and good overall health.

Extra Support for All Ages

All-in-One provides support for digestion, joints, skin and coat, with vitamins and minerals. It includes digestive enzymes, probiotics and probiotics, plus glucosamine and chondroitin and omega fatty acids for joint, skin and respiratory health. VitaPet Senior provides a full spectrum of daily vitamins and minerals to help your cat get everything she needs in her golden years.

About NaturVet

The unconditional love of a pet is unlike any other, and we believe it’s our responsibility as a company, to reciprocate that love. Our journey has been fueled by a genuine passion for pet health, leading us to a diverse mix of products that aim to make a difference. After 30 years of excellence in pet supplement manufacturing, we can safely attribute our success to the legitimate love we feel for pets everywhere.

Shop NaturVet

Questions & Answers

7 Customer Questions


how many pieces makes up to 500 mg per day

Answer by ChewyOct 17, 2018
2 Soft Chews will contain 500 milligrams of L-Lysine.

Does L-lysine work on wores in the mouth with a cat as it does with a human?

Answer by ChewyJan 09, 2020
This supplement is vet-recommended to promote a healthy immune system. We encourage you to speak with your veterinarian for treatment of feline stomatitis.

Where is this product manufactured?

Answer by ChewyAug 05, 2021
This supplement is made in the USA with globally sourced ingredients. For the very best ingredients, it is necessary to source some of the ingredients globally. NaturVet purchases ingredients from Norway, Iceland, Germany, Canada, and many other countries. Buying and validating ingredients from reputable suppliers is the most important step in their quality process.

How many calories per chew

Answer by ChewyNov 25, 2020
There are approximately 10 calories in each soft chew.

2.6
Rated 2.6 out of 5 stars
145 Ratings

105 Customer Reviews



Rated 1 out of 5 stars
By Lauren on Nov 17, 2025

Something is now off in their formula

We've used this brand of L-lysine before a few years ago and my cats loved it! Only one of them needed the immune support (has eye issues when she's stressed), but

We've used this brand of L-lysine before a few years ago and my cats loved it! Only one of them needed the immune support (has eye issues when she's stressed), but all of the cats wanted to eat these treats. I think the manufacturer has changed their formula or had some manufacturing issue recently, because these are hard as a rock now- completely inedible! I ordered one pack, thought they were defective, Chewy provided a free replacement, and the replacement pack was exactly the same. They were not set to expire until 2027. I even tried to soak one in water for a few minutes and it still remained hard as a rock! Something is wrong because no one would call the items that arrived to my door "soft chews." Get a different brand!


Rated 1 out of 5 stars
By KATHY on Jan 18, 2026

Price and ingredients

I had to switch to my other brand because my cat will not eat these

I had to switch to my other brand because my cat will not eat these


Rated 1 out of 5 stars
By Sarah on Oct 27, 2025

Texture was very hard

She wouldn’t even try to eat them. The other 5 cats in the house wouldn’t either.

She wouldn’t even try to eat them. The other 5 cats in the house wouldn’t either.


Rated 1 out of 5 stars
By Betty on Oct 24, 2025

Cats hate it

My fussy little furballs turned their noses up at this product, unfortunately.

My fussy little furballs turned their noses up at this product, unfortunately.


Rated 1 out of 5 stars
By Sharon on Jun 6, 2025

Kitty is very very fussy

She never eats any of the greenies or similar treat. I got this to boost her immune system as she has been diagnosed with FIV. She just recovered from an infection

She never eats any of the greenies or similar treat. I got this to boost her immune system as she has been diagnosed with FIV. She just recovered from an infection in the eye and some other area and had lost a lot of weight. But I can not even add this to the stuff she likes to eat. She will not eat it. I need something for her and this is not it


Rated 1 out of 5 stars
By Leo on Sep 2, 2025

Cat don’t like them

It appears that the chews are not appealing to cats and they will not eat them.

It appears that the chews are not appealing to cats and they will not eat them.


Rated 1 out of 5 stars
By Anna on Oct 16, 2025

Cats don't approve

Cats don't like the flavor and wouldn't eat them

Cats don't like the flavor and wouldn't eat them


Rated 5 out of 5 stars
By Maureen on Oct 23, 2025

Flavor

Evidently tasty because she hoovered it down

Evidently tasty because she hoovered it down


Rated 2 out of 5 stars
By Elon on Dec 5, 2025

Not the best choice

Would not eat the supplement

Would not eat the supplement


Rated 1 out of 5 stars
By Kelly on Aug 24, 2025

Boo

My cat won't eat them, so I assume they don't taste very good.

My cat won't eat them, so I assume they don't taste very good.