Pet Naturals of Vermont L-Lysine Cat Chews, 3.74-oz, 60 count
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Pet Naturals of Vermont L-Lysine supplement is designed to support the ideal health of your cat. These chicken liver flavored chews make a great addition to your cat's nutrition!
Key Benefits- Supports normal antibody enzyme anti hormone production.
- Very palatable chicken liver flavored chew!
- Naturally formulated with the most pure and potent ingredients available.
- Supports respiratory, healthy tissue and ocular functions.
- L-lysine competes with L-arginine, which is the amino acid required by the herpes virus to replicate.
For animal use only. Keep out of reach of children and animals. Your pet may consider this a treat. In case of accidental overdose, contact a veterinarian immediately.
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Item Number50377
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LifestageAdult, Senior, Kitten
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Food FormSupplement
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Product FormChew
Chicken Liver Flavor, Starch, L-Lysine, Water, Soy Lecithin, Canola Oil, Brewer's Yeast, Glycerin, Oat Flour, Barley Flour, Rye Flour, Oat Meal, Calcium Sulfate, Maltodextrin, Sodium Alginate, Sorbic Acid, Propionic Acid (a Preservative), Mixed Tocopherol Blend (a Preservative).
Guaranteed Analysis | |
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Moisture | 11.1% max |
L-Lysine | 250 mg |
Give 1 - 2 chews daily.
Store in a cool, dry place.
Why should I include vitamins & supplements in my pet’s diet?
Most commercial pet foods include baseline vitamins and nutrients, but some may not have the adequate amount to suit your pet’s exact health needs. Like in humans, vitamins and supplements can help support your pet’s long-term health, regulating everything from digestion to muscle growth. Consult your veterinarian to determine the best vitamins and supplements for your furry friend.
How often should I give this supplement to my pet?
It is recommended to give the suggested dosage based off your pet’s weight. Please refer to the Feeding Instructions tab and consult with your veterinarian for more information.
Is this supplement safe to use with the medication my pet is currently taking?
If your pet has a medical condition and is taking other medication, we recommend consulting with your veterinarian to ensure that this supplement is safe to use.
My pet is allergic to certain ingredients, will this product be safe to use?
For a complete list of ingredients, click on the 'Nutritional Info' tab, next to the 'Description' tab, just under the product photos. If you are unsure about the safety of this product for your pet, we recommend consulting with your veterinarian.
Does this product come in other product forms?
For a complete assortment of products by the manufacturer of this supplement, click on the link next to the item name at the top of the page. You can also find an assortment of supplements across all product forms on our page.

Veterinarian-Formulated Supplements
Pet Naturals of Vermont supplements are veterinarian formulated with pure, potent ingredients to support your cat's best health. They're more like treats for your kitty, with a fish shape and delicious flavors that will tempt any feline. These natural supplements help cats stay well the natural way, without overpowering medications or fillers like wheat, corn or artificial ingredients.


Daily Probiotic for Digestive Health
Developed for cats of all sizes, these daily chews have a natural duck flavor and ingredients that work together for stomach harmony. Just one a day helps support immune function and a healthy digestive tract with live cultures, prebiotic fiber and a durable probiotic. The patented GanedenBC30 probiotic helps the body clear away bad bacteria to make way for the good kind. It also maintains proper enzyme levels to help your pet's body absorb and use nutrients from their food.
Natural Mobility Support
As kitties age, they can benefit from hip and joint supplements that support mobility with natural ingredients. With two chews per day, your cat gets six active ingredients—green-lipped mussels, glucosamine, chondroitin, MSM, vitamin C and manganese. Together, these healing ingredients support flexibility, lubrication of the joints, connective tissue health and maintenance, and protection of the joints from everyday free-radical damage.
The NASC Quality Seal
Pet Naturals of Vermont uses raw materials of the highest quality, each evaluated for purity and potency. Their supplements bear the National Animal Supplement Council seal, which guarantees that the formula inside meets their standards of quality, integrity and labeling guidelines. It gives pet parents peace of mind knowing that they're placing their trust in a reputable company that complies with regulatory standards.
Chews With a Calming Effect
You'll want to have Calming chews on hand for any stressful event, like trips to the vet, travel, parties and boarding. They're also great for managing everyday stress and behavioral issues without making your pet sleepy or affecting their personality or energy level. The combined power of L-theanine, vitamin B1 and C3 promote a natural calm in anxious animals. This supplement has a tasty chicken liver flavor, and it's safe to double or triple the dose as needed.


About Pet Naturals of Vermont
Innovation leads the way for Pet Naturals of Vermont, a company that was founded in 2005 and continues to develop supplements that are safe and effective. Using evidence-based science, they create formulas that taste like a delicious treat to your pet, and also provide functional benefits. Powerful ingredients are combined to deliver natural alternatives to drug or chemical therapies so your pets can live healthy lives with all the support they need.
Customer Reviews
77% Recommend
77% of reviewersrecommend this product
You've Already Reviewed This Item
329 Reviews
Showing 1-10 of 329 Reviews
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Easier to chew
By Kittymom on Jan 7, 2021
I had tried another brand (VetriScience) which were way too hard even when I cut them. These Pet Naturals are softer and I can easily break the little fish shapes into pieces. I keep them tightly sealed also. The others may have been hard because of a freshness issue although they were hard when I got them. Hopefully these stay soft.
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Too hard for my older cat.
By Grams on Dec 9, 2020
These are not a soft treat. They are really hard. My older cat cannot eat them. I try soaking them first (which is hard to do)and crumbling it into soft food but he still doesn't eat it. I was hoping it would be soft and he would love them. He needs his l-lysine for reoccurring upper respiratory infections. Maybe I'll try the oil or powder.
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Cat actually voluntarily eats these
By Kitty on Dec 19, 2020
Kitty did NOT like the maple flavor gel L-Lysine (Or other kinds) but will devour these. She has allergies/goober eyes so vet recommended to put her on lysine but couldn’t find one she would take- these were the perfect choice for her- she even prefers them over her treats! Win win
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L-lysine treat
By Troy on Jan 7, 2021
None of my 3 cats or my daughter 8 show any interest at all, we try to break them too, not one was interested. I trow mine away, so disappointing that not even one cat would even try them
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Great VERMONT product
By Taffy on Nov 2, 2020
Made in VT (and using VERMONT chicken) this is a great product. Taffy stands at the drawer waiting for his morning tab as though it’s a great treat. Supports respiratory and ocular health, which is so important, especially for rescues who got a tough start in life.
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Good product
By CatMama on Dec 27, 2020
Out of my four cats, three of them love this treat. Even my older toothless cat (I crumble them for him because they tend to be hard).
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Made with animal products from China!
By Murrday on Oct 13, 2020
No, I do not recommend this product! I learned on another site that it is made with animal products imported from China. China has a dreadful reputation due to toxin contaminations in their products. But Pet Naturals is sourcing fro China because of cheap prices. I do not want *anything from China*. I m throwing the rest of the package away, and never buying anything from Pet Naturals of "Vermont"/China again.
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My cat don't like to eat
By litter on Jan 8, 2021
My cat smell yet and don't like to eat it. Even I try to put in the cane food mix together. He still don't eat the cane food.
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Thank God!!!
By Kittensmeds on Oct 10, 2020
My cats n kittens have the cat flu/upper respiratory infections. My vet said this was a good preventative so I prayed they would eat it. Omgosh they love them!!!! I am so thankful!!! I will be ordering more soon!!! And another great convenience is it gets delivered straight to my front door!!! Thank you Chewy.com !!
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My kitties love this stuff
By AuthorsShowLinda on Jan 1, 2021
I've tried several Lysine chews and this is the first one that both my cats will eat. Love it!!