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

By NaturVet
Rated 2.3134 out of 5 stars
$10.99Chewy Price
$10.44Autoship Price
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About This Item


  • Formulated by veterinarians to help support your feline friend's healthy immune system.
  • Kitty soft chew helps support conditions responsive to L-Lysine, an essential amino acid.
  • Beneficial chew that helps support your furry friend's eye health.
  • Healthy supplement to help support your cat's respiratory health, so he can breathe easier.

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Nutritional Information

Feeding Instructions


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

NaturVet has been making solution-based supplements and training aids for pets for more than 25 years. Each product they make is veterinarian-formulated and manufactured according to the highest industry standards in their FDA-registered and audited Temecula, CA facility. They proudly carry the coveted NASC Seal on all their labels, a respected symbol of quality assurance for discerning consumers.
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Top IngredientsActive Ingredients: L-Lysine (Monohydrochloride), Ascorbic Acid (Vitamin C), Astragalus Root....Active Ingredients: L-Lysine, N, N-Dimethylglycine HCl (D mg)....Active Ingredients: L-Lysine Hydrochloride 500 mg., Inactive Ingredients: Arabic Gum, Brewers Yeast...L-Lysine: 275 mg/10 chews (27.5 mg per chew), Colostrum (15% lgG): 55 mg/10 chews (5.5 mg per chew), Omega-3s (Fish Oil...Chicken Liver Flavor, Starch, L-Lysine...
LifestageKitten, Adult, SeniorKitten, Adult, SeniorKitten, Adult, SeniorAdultKitten, Adult, Senior
Health FeatureEye Care, Immune Support, Respiratory CareImmune SupportEye Care, Immune Support, Respiratory CareImmune Support, Respiratory Care, Allergy ReliefImmune Support
Food FlavorUnflavoredPoultry, Meat, Chicken, LiverHerbs & Spices, HickoryChickenPoultry, Meat, Chicken, Liver
Food FormSupplementSupplementSupplementSupplementSupplement
Special DietNo Corn No Wheat No Soy, Non-GMO, Natural

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.

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

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.

ReviewsWrite a Review

Rated 2.3134 out of 5 stars
67 Ratings
Would recommend to a friend

67 Customer Reviews

Rated 5 out of 5 stars
By mrMlysine on Sep 2, 2023

must taste good

My boy actually protected his morsels. The first time I have seen him guarding a food item He ate a whole days worth in a few minutes

Rated 1 out of 5 stars
By Matt on Jun 20, 2023

Rock hard cat can't eat

These are supposed to be soft chews and they are so hard you can hit them with a hammer to break them up I to small peices that the cat will eat around. I'm considering asking for a refund and already bought something else.

Rated 1 out of 5 stars
By KittyMom on Sep 4, 2023


We really wanted to try, but the product we received was dried out and probably stale

Rated 3 out of 5 stars
By Auntmom on Apr 25, 2023

For cats--Not

These are for cats, but my 3 turned their noses up after trying to chew them. They aren't as small as a cat treat, and much harder. The vet suggested these for one of our cats who appears to have had some allergies. I have a morter and pedestal and crunch one into a fine powder and mix it with water, only way he will eat them. The other cats also will go and lap at it but none can chew them!!

Rated 1 out of 5 stars
By Frazeled on May 3, 2023

Very displeased

It states in the description that these are soft chews..Just received them and they are so hard..Can't hardly smash with a hammer...Do Not Buy...

Rated 2 out of 5 stars
By jacandnac on Mar 14, 2023

Not soft at all

I must agree with the majority of the reviews..that I wish I had read before purchasing. These are by no means a soft chew. Very firm, almost crunchy. I must now try to crumble it up in the food and hope to get my money out of them.

Rated 1 out of 5 stars
By Laurie on Jan 22, 2023
Top 500 Contributor


I wish they hadn't changed the recipe. My cats loved the first batch I got over a year ago. One cat ate it and I hope that will continue. He seemed to have trouble with it. The other cat who needs it, refused to eat it. There are a few skinny ones, but most are a big chunky blackish treat. I was really hoping to find an affordable and delicious L-Lysine treat, so that I wouldn't have to force it down. The container isn't adequate to keep the item fresh. That might be part of the reason why they're hard. They don't look like the picture, either.

Rated 1 out of 5 stars
By catmeow on Aug 6, 2023

Not soft but.

None of them liked it and it wasn't that soft.

Rated 3 out of 5 stars
By Otto on Jul 29, 2023

The soft chews get harder after opening

Rated 1 out of 5 stars
By bvegs on Jan 7, 2023

Definitely Not SOFT Chews

Why are these called soft chews? They are so hard that I had to crush them to avoid my cats breaking their teeth. The only reason I gave this product one star is that my cats liked the flavor. I have ordered L-Lysine from other brands that have been soft enough to break in half easily. I won't be ordering this brand again.