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Coco and Luna L-Lysine Immune Support Salmon Flavor Powder Cat Supplement, 4-oz jar

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At a Glance

  • Non-GMO
  • Immune Support
  • All Lifestages
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$22.99 Chewy Price
($5.75 /oz)
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About This Item

Details

  • Supports eye, immune and respiratory system health in cats.
  • Helps to fight off issues like sneezing, watery and inflamed eyes and runny noses.
  • Made with natural ingredients.
  • Just mix the powder into your pet’s food daily for easy feeding.
  • Made in the USA.

Ingredient Information

Instructions

Learn More About Coco and Luna From Our Team of Experts

Frequently bought together

Questions & Answers

16 Customer Questions

Can this product be used with Coco and Luna Probiotics with Inulin Stomach & Digestion Powder Probiotic Supplement for Cats?

I did not get a scoop. How much is each scoop?

Answer by Chewy • Mar 04, 2021
The scoop size for this product is a 1 gram scoop, which is similar to a teaspoon.

What are the other ingredients in this product?

Answer by Chewy • Aug 09, 2021
Vita Pet Life Coco and Luna L-Lysine Immune Support Salmon Flavor Powder Dog & Cat Supplement contains as an active ingredient L-Lysine Hydrochloride and the inactive ingredients are as follows: Magnesium Stearate, Maltodextrin,, Natural/Artificial Salmon flavor and SIlicon Dioxide.

Where is this product made?

Answer by Chewy • Jan 29, 2021
This supplement is made in the U.S.
Reviews
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4.3
Rated 4.3 out of 5 stars
368 Ratings
Terms & Conditions

Customers Mention

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

Ease of Use

85% Positive

Effectiveness

84% Positive

Ingredients

86% Positive

Long-Term Benefits

84% Positive

159 Customer Reviews

Rated 5 out of 5 stars
By Karmen on Dec 28, 2024
Top 500 Contributor

A lifesaver, literally!

Ziva is one of my 16-year-old girls. For the last five years starting in October she has gotten ear infections. In November, the last five years, her ear infections

Ziva is one of my 16-year-old girls. For the last five years starting in October she has gotten ear infections. In November, the last five years, her ear infections have turned to pneumonia. Each year I have gone through the expense of the vet and medication’s to save my sweet child.(yes! She is one of my children!) It was suggested that I start her on L Lysine. So this year in October (or before I don’t remember.), I ordered. Coco and Luna lysing supplement. I mixed it in a “delectable cat treat.”. Surprisingly to me she ate it easily. I was afraid I was going to have to actually force her to eat it, but I didn’t. I gave it to her exactly as the package said to do. October passed with not one ear infection, no trip to the vet, and no anabiotic shots. No pills to shut down her throat, and no getaway chase game trying to catch her. It is now the end of December January is quickly approaching, and she did not get Pneumonia. I can’t tell you how wonderful it was to have December pass without the fear of losing my sweet girl. I recommend this lysine for that reason.

Rated 5 out of 5 stars
By Risa on Dec 18, 2025

Coco and Luna L-Lysine saved my babies.

Both my babies were adopted with respiratory issues. My little girl got over it, but my little boy has a chronic respiratory issue. If it wasn’t for Coco and Luna,

Both my babies were adopted with respiratory issues. My little girl got over it, but my little boy has a chronic respiratory issue. If it wasn’t for Coco and Luna, I don’t know whatI would’ve done. There was a short time when I had run out and did not have any to give to him. It was about a five day stretch and within those five days, his respiratory issues started to flare. As soon as I started him on the L.-Lysine within a couple of days it was back under control again. I never run out of it anymore. It’s been two years thank you Coco and Luna chewy!

Rated 4 out of 5 stars
By Sunny on Nov 30, 2025

Keeps her eyes from running!

She snorts a lot still but it keeps her eyes from running. The only thing I don’t like is that it hardens into blocks toward the bottom of the jar so I am never

She snorts a lot still but it keeps her eyes from running. The only thing I don’t like is that it hardens into blocks toward the bottom of the jar so I am never able to use more than 1/2 to 2/3 of the jar.

Rated 5 out of 5 stars
By Shari on Jul 26, 2025
Top 1000 Contributor

lifesaver

I rescued a feral cat over a year ago. He was near death, skinny with abcesses. Since I could not handle him, I started him on wet food. Then I read that this

I rescued a feral cat over a year ago. He was near death, skinny with abcesses. Since I could not handle him, I started him on wet food. Then I read that this product helped with URI's. It does. He was so congested, sneezing with mucky eyes. On this product, his eyes cleared up within a week. His congestion will probably be lifelong. He is OK as long as he gets a daily dose of the L-Lysine. I've tried to wean him off of it but he immediately gets worse. He is relatively healthy as long as he has this. He is now able to eat kibble and seems very happy. He has not left my yard in months and comes running to be petted every time I go outside. I still cannot hold him or crate him so no vet is possible. I did trap him for feral rescue so he was neutered and returned. L-lysine is a miracle for my cat.

Rated 5 out of 5 stars
By Rachel on Jun 26, 2025

Helped my cat so much!

This product has helped my cat so very much. His eyes no longer have gunk buildup. He used to get colored eye boogers and hated when I would wash his face. Ever

This product has helped my cat so very much. His eyes no longer have gunk buildup. He used to get colored eye boogers and hated when I would wash his face. Ever since putting this in his wet food he is sneezing less and itching less. It honestly has made his life so much better. Thank you so much!

Rated 5 out of 5 stars
By Sheila on Jun 21, 2023

Great product

I have two Persian cats. I used to give them vetri science lysine chews and they loved it. Then they changed their formula, it smelled weird and they were rock hard

I have two Persian cats. I used to give them vetri science lysine chews and they loved it. Then they changed their formula, it smelled weird and they were rock hard. I tried re purchasing a bunch of times because my prior experience with lysine powder wasn’t good. Every order of the chews was awful, so i had to hunt for something new. Even Tried the gels. My cats wouldn’t even go near it. One of my kitties developed a sequestrum in his eye and had to have surgery. After almost 2 months and a million drops a day, the vet said his eye was healing unusually slow. He was not on a lysine supplement during this time as I hadn’t found a good one they liked. Well, i finally found this, and almost immediately his eye started showing real improvement! I didnt do anything else differently except add a scoop of this to his food twice a day. Hes almost all better now, and i really do think adding this helped. Also, the cats seem to like the taste too.

Rated 5 out of 5 stars
By Berta on Feb 24, 2025

Cats health

All my five cats were sneezing! It started with one of them, and then it passed to all of them, so I bought the L lysineand started adding it to their food. After

All my five cats were sneezing! It started with one of them, and then it passed to all of them, so I bought the L lysineand started adding it to their food. After a few days, the sneezing subsided. So pleased!!!

Rated 5 out of 5 stars
By Donna on Apr 3, 2026

THIS PRODUCT IS A MIRACLE WORKER

My cat Rusty came down with a terrible nasal infection. The vet said he was born with a herpes virus and he will never get better. Rusty had no quality of life left

My cat Rusty came down with a terrible nasal infection. The vet said he was born with a herpes virus and he will never get better. Rusty had no quality of life left. He was on three medications and they weren't helping. I started giving him the Coco and Luna Lysine powder. I mixed it with a salmon broth and within 48 hours he was acting like his old self again. It really did save his life because I was going to have to put him down. He is showing no signs of the virus anymore and I am going to continue giving him this powder every day for the rest of his happy life!! Thank you so much Coco and Luna for this miracle powder!!! I have another cat with Feline Aids so I'm sure he will benefit from this product also.

Rated 5 out of 5 stars
By Laura on Sep 18, 2025

My really helped with sneezing and wheezing

My sweet girl has FHV-1 and her symptoms are congestion, sneezing and a wheezing. L-Lysine doesn’t work for every cat, but it sure works for her. The sneezing and

My sweet girl has FHV-1 and her symptoms are congestion, sneezing and a wheezing. L-Lysine doesn’t work for every cat, but it sure works for her. The sneezing and wheezing are all but gone, and I’m sure she feels a lot better because she’s been playing more. This won’t treat a cold, but if you have an FHV-1 cat, then I recommend trying this. :-) Oh! And it mixes easily with her wet and dry food. She just gobbles it up.

Rated 2 out of 5 stars
By Rosetta on Mar 30, 2025

I wish I could give 5 stars

I had such high hopes per the reviews for my boy who has had upper respiratory issues (basically Herpes) since a kitten. Even my vet suggested a L-lysine supplement

I had such high hopes per the reviews for my boy who has had upper respiratory issues (basically Herpes) since a kitten. Even my vet suggested a L-lysine supplement. This has not worked for him at all. I don't believe it is the product itself (as other brands in the past have not helped). I will say though I mix it with his wet food and unlike other products, he eats all of his meal instead of refusing to eat or eating "around" the product, so it must taste good. I can't smell the product and it melts easily in wet food. We are about half way done so I will continue until it's gone. Unfortunately for me it did not work, but I wouldn't be discouraged to try as it sounds like others have had luck. I just think my baby is too far gone (he's 14 with food and environment allergies as well).