Lysine for Cats - 4 oz Powder

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  • Immune System Support - Coco and Luna L-Lysine helps to support a strong immune system and eye function for your cat.
  • Respiratory Health - Our formula promotes normal respiratory function and health which can help fight against issues such as sneezing, watery and inflamed eyes, and runny noses.
  • Easy to Serve Powder - Our formula has the best natural ingredients, adjusted for cats in an easy to serve format.
  • A Brand You Can Trust - We understand how much your pet’s health and wellbeing mean to you, so our products are manufactured in FDA-registered facilities that are NSF and GMP-certified in the USA.
  • Made in the USA - All our products are made in the USA and are veterinarian approved as well as hypoallergenic.

Administer daily amount orally.

For Kittens under six months:
1/2 SCOOP.

For Cats over six months:

Recommend splitting the dose between AM and PM.

Experience Coco and Luna supplements
with complete peace of mind, thanks to our satisfaction guarantee or your money back. No gimmicks – if you're not satisfied within 30 days, simply return the product, and we'll fully refund your purchase. Enjoy the benefits risk-free, as your satisfaction is our priority.

Buy it with


Maltodextrin-Free Supplement

Coco and Luna
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In addition to being meticulously crafted to improve immune response, L-lysine also supports optimal eye health and overall well-being.

Furthermore, it maintains normal respiratory function while strengthening the body's inherent resistance to pathogens.

Coco and Luna


Coco and Luna


Coco and Luna


Customer Reviews

Based on 85 reviews
Cathy B
Cats love it! Fast shipping!

Cats love it and it helps prevent respiratory problems. I add 1 scoop per day to moist food (1 can fancy feast)

Excelent customer service

My product came damaged and when I reached out to them, i got a fast reply and they also sent me another one! I am very happy with my purchase and it also really improved my cat’s constant watery eyes.

Works for our 16yo boy

Our vet recommended this product due to his life long-term battle with sinus issues and scar tissue. Great product, easy to use. Mix it in his salmon broth every morning and down the hatch it goes. Just like everything else with our finiky friends some will love it and eat it up, while others will fight it and be stubborn to the core. Best of luck to all.

Ryan Zuchowski
Easy to use

I mix this with my cats food and they can't even tell.veey easy to use and alot for the money.will buy again.

Sandra S.
Cats love this stuff!

I have tried many different lysine and this is the only one my cats will eat! Mix with delectable or fancy feast broths.

Frequently Asked Questions

Coco and Luna Liver and Kidney was formulated by veterinarians who dedicated themselves to studying the most excellent formulations, based on natural ingredients, that are currently available on the market. The result of this meticulous work is the current formula that effectively and surely promotes the health and well-being of your beloved pet.

Yes, dogs of any age can benefit.

Yes, but you need to know that our products are so complete that they alone may contain everything your dog needs.

Use is daily, but the recommended dosage depends on your pet's weight. On our product label you can find the best suggested use for your pet.

No. Our formulas are delicious, but the amount provided does not have enough extra calories to make your dog fat. What can happen is that he becomes healthier, stronger and more active, and consequently becomes hungrier. In this case, you just need to control the amount of food provided to him.

Supplements have no contraindication for females during this period, but it is always important to count on the help of your veterinarian to make this decision!


Prevention and care are the most beautiful forms of love.

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