For Cats

L-Lysine Powder

Say goodbye to feline wellness worries and hello to Arfuny’s L-Lysine Powder—just a sprinkle for a happy, healthy cat with zero hassle!

Our premium L-Lysine formula delivers targeted benefits that:

Supports healthy eye function
Strengthens immune system health
Boosts respiratory comfort
Nourishes skin & coat wellness
Size

Solves Common Feline Wellness Concerns
Cats cannot produce enough L-lysine on their own, and this essential amino acid is crucial for supporting their upper-respiratory system. Without adequate lysine supplementation, many cats face common issues such as sneezing, runny nose, squinting, and watery, inflamed eyes, especially during seasonal stress or shelter changes. These discomforts can affect their daily comfort and overall well-being, making targeted lysine support necessary for their health.

Comprehensive Multi-Benefit Support
Our premium L-lysine powder is specially formulated to support your cat’s overall well-being, promoting normal eye function and respiratory health while strengthening the immune system to help manage common feline respiratory and ocular issues. Enriched with a variety of natural ingredients and essential vitamins for overall feline well-being, its key components include L-lysine HCl, taurine, astragalus, codonopsis, atractylodes macrocephala, burdock seed, all working together to provide holistic support for your cat’s health.

Palatable Flavor & Easy Use for All Cats
Crafted with a delicious chicken flavor that even picky fur babies will absolutely love, our lysine powder is suitable for cats of any age, breed, and size, helping to keep your furry friend healthy and happy with its irresistible taste. Made with safe ingredients free from grains, alcohol, and gluten, and containing no additives or harmful chemicals, it is completely safe for all cats. Its fine texture mixes effortlessly into wet or dry food—no messy measuring required—simply sprinkle the recommended daily dose (based on your cat’s weight) over meals for hassle-free daily supplementation.

Designed for daily use for cats of all ages, breeds, and sizes. Follow the label directions for the appropriate daily serving amount based on your cat’s weight.

Sprinkle the recommended amount over wet or dry food and mix well before serving. The powder format makes it easy to add daily L-Lysine support without pills, forced dosing, or complicated preparation.

Made with L-Lysine HCl, taurine, astragalus, codonopsis, atractylodes macrocephala, burdock seed, and supportive vitamins. This formula is designed to help support immune health, eye health, respiratory wellness, and everyday feline well-being.

Your pet deserves simple, joyful care
We know how deeply you love your pet—and how overwhelming it can feel to navigate pet wellness. Too many products are confusing, complicated, or just don’t fit into everyday life. ARFUNY was built to change that: to make pet care feel straightforward, reliable, and full of genuine joy, not stress.

Supplements that fit your life
We believe pet wellness shouldn’t require guesswork. Every ARFUNY product is thoughtfully formulated with high-quality, pet-first ingredients, designed to be easy to understand, simple to stick with, and effective for real, everyday life. No overcomplicated jargon, no unnecessary steps—just the care your pet deserves, made simple.

Care rooted in trust and joy
At ARFUNY, we see the bond between pets and their people as something special. Our holistic approach to pet wellness combines gentle, effective ingredients with heartfelt intention, because we know that when care feels easy, it feels joyful. We prioritize transparency, thoughtful design, and consistent quality in every product, so you can trust you’re giving your pet the very best.

Made with love, backed by care
Every batch of ARFUNY products is crafted with the same love you give your pet. We take pride in creating supplements that are as reliable as they are easy to use, with quality ingredients you can feel good about. Because when pet wellness feels simple, it feels rewarding—for you, and for them.

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Reviews

Short proof points that reinforce trust quickly.

Representative quotes help the page feel more grounded without slowing the read.

ABOUT FUNCTIONALITY
Helps with recurring cat cold issues

“My cat often gets sneezy and watery eyes when seasons change. Thankfully this lysine works great. Those annoying symptoms fade away gradually, and it really keeps herpes from flaring up again.”

★★★★★
ABOUT EYE HEALTH
Noticeable improvement on immunity

“My kitty used to fall sick easily. I stick to feeding it daily, and now it feels way healthier and more lively. It barely gets unwell these days.”

★★★★★
ABOUT TASTE
Great all-around care for cats

“It does more than just protecting breathing health. My cat grows steadily with firmer body condition, and its coat also turns softer and shinier than before.”

★★★★★
ABOUT PRODUCT
Cats love the taste super much

“The chicken flavor hits my cat’s taste perfectly. No trouble getting it to eat at all. Easy to absorb and safe enough for long term daily feeding.”

★★★★★
TRUSTED DAILY SUPPORT

Chosen by Cat Parents for Daily Immune Support

Key Ingredients

Clean, effective, high quality ingredients
For your cat

ARFUNY L-Lysine powder is designed for everyday feline wellness, combining immune support, respiratory comfort, and an easy powder routine cats can enjoy.

L-Lysine HCl

L-Lysine HCl

Supports immune function and eye health, promoting strong daily wellness for cats of every age.

Function
Helps support immune function and eye health for everyday wellness.

Taurine

Taurine

An essential amino acid for cats that supports heart function, vision, and overall vitality.

Function
Helps support cardiovascular health, eye function, and overall feline vitality.

Astragalus

Astragalus

A traditional botanical that helps support immune balance and the body's natural defenses.

Function
Helps support immune balance and natural defenses for everyday wellness.

Codonopsis

Codonopsis

Supports natural resilience and helps maintain steady energy and vitality.

Function
Helps support natural resilience and steady vitality for everyday wellness.

Atractylodes Macrocephala

Atractylodes Macrocephala

Supports digestive comfort and helps maintain balanced energy and vitality.

Function
Helps support digestive comfort and balanced vitality for everyday wellness.

Burdock Seed

Burdock Seed

A time-honored herbal ingredient that supports general wellbeing and a healthy coat.

Function
Helps support general wellbeing and a healthy coat for everyday wellness.
TRUSTED DAILY SUPPORT

Chosen by Cat Parents for Daily Immune Support

A simple daily L-Lysine powder formula made to support your cat's immune, respiratory, eye, skin & coat, and overall wellness routine.

ARFUNY L-Lysine powder is designed for everyday feline wellness, combining immune support, respiratory comfort, and an easy powder routine cats can enjoy.

100,000+Cat Customers
95%+Positive Reviews
5-StarLoved by Pet Parents
L-Lysine Powder trust overview
Why Pet Parents Choose

ARFUNY

Cat-focused daily support with a clean powder formula made for easy routines.

Liquid Drops

Useful when direct dosing matters more than habit comfort.

  • - Needs measuring or mixing
  • - Less routine-friendly for some pets
  • + Good for direct administration

Paste

Helpful for some formats, but less aligned in others.

  • - More format-specific
  • - Can feel messier depending on use
  • + Still usable in focused routines

Filled Treats

Treat-based format, less precise for daily supplementation.

  • - Harder to control exact serving
  • - Depends on treat compliance
  • + Great taste appeal for picky cats
Why Pet Parents Choose Arfuny - Quality Ingredients Why Pet Parents Choose Arfuny - Trusted Formula Why Pet Parents Choose Arfuny - Pet Loved Why Pet Parents Choose Arfuny - Clean Formula
Feature
ARFUNY
Others
Formulated and developed for cats
Fine powder for easy food mixing
No fillers, grain, dairy, or artificial flavors
Supports immune & respiratory health
Clean ingredient labels
Picky eater approved chicken flavor
Taurine for heart and vision support
Safe for cats of all ages and breeds
FAQ

frequently asked questions

Practical answers help the product feel easier to trust and easier to buy.

It is a natural daily supplement formulated with L-Lysine HCl, Taurine, and botanicals, providing comprehensive immune and wellness support for cats.
It strengthens the immune system, supports respiratory comfort, promotes normal eye function, nourishes skin and coat, and provides essential taurine for heart and vision health.
Key ingredients include L-Lysine HCl, Taurine, Astragalus, Codonopsis, Atractylodes Macrocephala, and Burdock Seed — a comprehensive blend for full-body feline wellness.
Simply sprinkle the recommended amount over wet or dry food and mix well before serving. The fine powder blends easily without clumping or residue.
Yes! It features a delicious chicken flavor that most cats love, making daily supplementation simple and stress-free.
Absolutely. It works for kittens, adult cats, and senior cats, fitting all breeds and sizes.
Yes. The L-Lysine formula supports the immune system, which helps manage common feline issues such as sneezing, runny nose, squinting, and watery, inflamed eyes. It also promotes normal respiratory and eye health.
The powder format is ideal for cats who prefer food-based supplementation. It mixes easily into meals without the need for measuring liquids or using droppers. The fine texture is virtually undetectable in food, making it perfect for picky eaters.
It is free from grains, gluten, alcohol, soy, dairy, GMOs, synthetic additives, and fillers.
Taurine is an essential amino acid that cats cannot produce sufficiently on their own. It supports cardiovascular health, normal vision, and overall vitality, making it a critical addition to any feline wellness formula.
Yes. Made with clean natural ingredients and free from common allergens, it is gentle and easy to digest for sensitive cats.
While the ingredients are generally safe, we always recommend consulting with your veterinarian before introducing any new supplement to your cat's routine, especially if they are on other medications or have pre-existing health conditions.
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M
Mr. Sixx
L-Lysine with extras

Our cat Pouncy had a bad itching problem where he would lick and scratch so much on his legs that it left bare spots. The vet recommended L-Lysine, and that worked wonders, so we got this NOW Pet Health, L-Lysine Supplement. His fur has regrown and he doesn't constantly scratch any more. We've been using L-Lysine for a couple years now, mixed into his wet food. The dose we've been giving his is about 275mg mixed into his food.

This formula contains L-Lysine, but also has Taurine, Vitamins B and E, and some herbal additives:

Astragalus: Immune and Overall Vitality Support
Codonopsis: Energy and Digestive Tonic
Atractylodes Macrocephala: Digestive and Dampness Regulation
Burdock Seed: Blood Purification and Skin/Coat Health

It's easy to give the right amount with the included scoop. The only thing I'm not sure of is the recommended dosing. It says the serving size is 3g (which would be 40 servings per container), but the number of scoops depends on your cat's weight? Minus 1 star for not being more specific about serving size vs. scoop number vs. cat weight. Quality seems good - the powder is very fine has no offensive smell. It blends in with wet food very well. Pouncy is about 12 lbs, so I add 2 scoops to his wet food. He seems to love it -- he eats the whole portion, where in the past he will eat 1/2 and then come back later for the rest. We'll see how effective it is over the NOW Pet Health formula of just L-Lysine, but I assume the added vitamins and herbals will only increase its effectiveness.

L
Lauren Whitlock
GREAT product!!

Absolutely excellent supplement they love when I add it to their food they eat it right up. It almost adds a treat like sustenance to their regular dry food - so I follow the serving instructions and add that amount to the top of their dry food and then I add some water and mix it all up, let the food sit for like 15 minuets so it soaks up the water a bit and then give it to my cats and they love it! Super easy to get the cats to eat it they LOVE it! I also notice they are more active and happy. They have a good appetite when eating and they don��t throw up the food like they sometimes do. Highly recommend.

J
JandA
Helps sick cats

This L-Lysine powder has been a great addition to my cat's daily routine. It's clearly formulated with feline health in mind, supporting immune function while also helping with common issues like sneezing, runny noses, and watery eyes. I especially appreciate that it includes taurine, vitamins, and an herbal blend, which makes it feel like a more complete supplement rather than just lysine alone.
The chicken flavor is a big win my cat had no problem accepting it when mixed into food, and there was no hesitation or refusal, which can be a challenge with supplements. The powder blends easily without clumping, making dosing simple and mess-free.
After consistent use, I noticed an improvement in overall comfort, particularly with respiratory and eye-related symptoms. It feels gentle yet effective, and I like that it's suitable for regular use as part of ongoing immune support.
Overall, this is a well-made, thoughtfully formulated lysine supplement that's easy to give and delivers real benefits. A solid choice for cat owners looking to support their cat's immune, respiratory, and eye health in a convenient, palatable form.

c
chere
Just what was needed!

I have a stray cat hanging around that disappeared for awhile then came back skinnier than ever with a terrible "cold". I made some home made cat food and sprinkled this in each meal for the nutrients the food lacked. He eagerly eats every bit each meal and now looks SO MUCH healthier and his cold is gone! I think he really appreciates what I've done for him cuz he now lets me pet him and waits for his " special" meal each morning and evening.

P
Patrick williams
Cats love them

I recently started using the SANTKOL L-Lysine Powder for my rescue cats, and I'm absolutely delighted with the results! This product has quickly become a staple in my household, and I can't recommend it highly enough for any cat owner looking to support their feline's health.
First off, the chicken flavor is a huge hit! Even the pickiest eaters among my rescues are eager to dig into their meals when this powder is sprinkled on top. It's such a relief to find a supplement that my cats actually enjoy, making it easy to incorporate into their daily routine.
The active ingredients in this formula are outstanding. L-lysine is essential for cats, and this product effectively supports upper respiratory health. Since adding it to their diet, I've noticed a significant improvement in their comfort levels no more sneezing and watery eyes during seasonal changes! It's comforting to know that I'm helping to maintain their histamine balance and keeping their nasal and ocular tissues supported.
The combination of taurine, herbal blends, and essential vitamins further enhances this supplement's effectiveness. I appreciate the focus on overall well-being and immune support, especially for my rescue cats who can be more vulnerable to common issues. The premium quality ingredients reassure me that I��m giving my pets only the best.
Another major plus is that it��s suitable for cats of all ages, breeds, and sizes. This versatility means I can use one product for all of my cats, simplifying my feeding routine. The fine texture of the powder mixes effortlessly into both wet and dry food, eliminating any messy measuring or fuss.
Lastly, I love that SANTKOL ensures their product is free from grains, alcohol, and gluten, with no harmful additives or chemicals. This commitment to safety gives me peace of mind, especially when caring for cats that have had varied health histories.
Overall, the SANTKOL L-Lysine Powder has made a positive impact on my rescue cats health and happiness. I wholeheartedly recommend it to other cat owners looking to enhance their pet's wellness routine. It's a simple yet effective way to ensure your furry friends are thriving!

A
Amazon DIY, Pet & Garden Shopper
Easy to Mix in Wet Food, Cats Don't Mind the Taste

I've been using the powder mixed into wet food, and it's been easy to give with no resistance from my cats.

? Fine powder mixes smoothly into wet food, comes with little scoop for measurement

? Chicken flavor helps so taste hasn't been an issue my cats eat it without hesitation

? Convenient way to support immune health

? Works well as part of a regular routine

? Good overall value for a daily supplement

Overall, this has been simple to use and effective for ongoing support, especially for cats needing a little extra support.

r
redcat424
My cats love it!

My cats can be pretty finicky, but all 6 of them loved this lysine powder. I had one of them begging for it as soon as I opened the jar. So I gave him a little in the lid and he licked it right up without evening having to mix it into anything.

My cats are overall healthy, but two of them tend to get seasonal sniffles or runny eyes. I find lysine helps a ton. So I'm glad they like this formula. I would order it again.

C
Customer Review
Real chicken- great ingredients. And kitty likes it!

I like that this has real chicken in the ingredients. If you haven't looked at the ingredients, go down and do that because they are really good compared to other things.

In the title/description I would recommend that the manufacturer puts real chicken and not just chicken flavor because the flavor is real chicken.

My cat likes this a lot. I just add on top of her food and she gobbles it right up, as always. I like that this is an essential amino acid that she needs. It makes me feel good to give her things like this. A good value for the larger size tub this comes in. It will last a long time.

R
REB
Effective Lysine + vitamin supplement for optimizing your cat's health and immune function.

I have an FIV+ elderly cat, whom my vet recommends having a daily lysine supplement to keep his immune system bolstered. So I'm always on the lookout for a good supplement. I used to use one that was just straight lysine, but now that he's getting older I look for ones that incorporate some vitamins, or probiotics, too. I like that this supplement includes Taurine, which has been shown to reduce vomitting episodes. I also like that it incudes B-vitamins and E, which further support his health/ coat/ eyes.
I mix the powder into his daily wet food, add some water, and mix up everything into a slurry. He gobbles it down with no hesitation around the smell or taste of it, couldn't be easier. It's an affordable investment into your cat's best health, and life.

S
Suditi
Essential Autoimmune Cat Care And They Like It!

I was the Cat Lady in a municipal animal shelter for eight years. There is no more stressful environment for a cat and viruses can run rampant through the shelter. Lysine was an important additive to cats food when stressed and definitely helped. Sadly, when a cat is stressed to the point it won't eat, giving lysine is difficult, but the shelter had a vet staff that could help with these issues.

I��ve retired now and live in a very poor county with a lot of outdoor cats. My father adopted one in a colony where we used to have a storage shed. Sadly, these cats have been exposed to the feline herpes virus, which leads to runny eyes, noses, and sneezing when active.

I had bought a container of the lysine I used to use at the shelter, but dad has to mix it in the food first. When I saw this chicken flavored version I had to give it a try. Just as I��d hoped, now he only has to sprinkle a scoop on top as they love it!

Highly recommend for easily stressed, cats or those with viral or autoimmune flareups.

N
Nicole Roberts
A great product for cats all winter long!

This L-Lysine cat supplement is great. As it supports immune health, respiratory health, as well as eye care for my three cats at home'Boo Radley, Clementine, and Asher. Allowing me to know that their overall health and development will not be stunted during the colder months of the year, spent indoors, without access to their outdoor Spring, Summer, and Fall catio system for my back porch. This product lets me safeguard their health and for that I'm grateful!

D
Denise C. Rohl
This is essential to boost immunity

All my cats were exchanging the same cold. My vet suggested L-Lysine and I placed it on the food and in the dry food. With in a week there was a marked in improvement in all the cats. I will continue to use this on a regular basis.

R
R. MacD
Perfect supplement for my cat with "pillow paw"

My cat has an autoimmune condition called pododermatitis or "pillow paw". We have added L-lysine to his wet food for years to help reduce the flares that result in bleeding all over the floor. L-lysine was recommended by our vet. When we found this brand we noticed the description says it is chicken flavored to we decided to give it a try. I was pleased that the bottle was sealed well. I did not personally taste to verify the chicken flavor; however, my fur baby seems quite excited when mealtime rolls around now. He certainly likes the change to this brand. I don't expect any changes to his pillow paw because of the switch, but I will update this review in a few months if there are any. Otherwise, Aslan gives this product the full "paws up" review.

Q
QuacksterVu
My picky cats take this without issue, so worth a shot!

One of the most important factors to consider when buying cat supplements is the taste as my cats are very picky. I'm happy to say that my pickiest cat was willing to eat their Lysine, when mixed with their wet food. There was no issue with mixing this in (as this was easy to fold into the wet food, pate, with a fork). There is no chemical smell and there is a yeast/chicken scent to the Lysine, which I think is attractive to cats' appetite.

So far, it seems to be helpful in decreasing the frequency of my cats getting weepy eyes and nasal discharge, so I would say this is a win in effectiveness.

Quality is good, and thus, this is a good value item for the quantity, effectiveness of the product, and palatability perspectives. Worth trying out!

K
Kal Davis
The perfect addition for your little furbaby.

Freya was rescued as an abandoned runt. As such, she has her issues. Since I started giving her this every day, she has completely changed. She looks healthier, acts like a kitten should, and loves her morning "treat".

J
John & Nicole
Easy to mix into wet food

Cats all like it. It mixes in to their wet food easily. It's the worst of winter here, and no colds among the ferals we care for since we started using this. It's a great deal for the price. Highly recommend, and would get again.

A
Andy
Easy to use

It's easy to just sprinkle it over my cat dry food. My indoor cat and outdoor cats like it. Hopefully it helps with the outdoor cats. They have been sneezing and have watery eyes.

L
Leonard
Good for watery eyes

I bought this for my cat Scooter, who gets watery eyes and sneezing from time to time, and it's made a noticeable difference. The L-lysine really helps support the immune system and respiratory health, and the added taurine is great for heart and eye health. I also like that it includes an herbal blend (astragalus, codonopsis, burdock, etc.) which supports overall immunity instead of just masking symptoms.
Scooter eats it without any trouble the chicken flavor mixes easily into wet food and he doesn't even notice it's there. After about a week his eyes looked clearer and he wasn't sneezing nearly as much.
I appreciate that it also has B vitamins and vitamin E for extra support, and the ingredient list looks clean compared to a lot of cat supplements. For anyone dealing with kitty colds, runny eyes, or immune issues, this has been a great product and I'll definitely keep it on hand for Scooter.

S
ShishaDoe
Would order again and again!

I ordered Lysine, hoping for a little boost to my cat's immune system because I noticed she got watery eyes and a bit lethargic occasionally. After just a few days of use, my cat's health noticeably improved. Her coat is softer and noticeably shinier. Her digestion seems steadier (no more episodes of diarrhea), and she hasn't had any issues with watery eyes again (not even during allergy/pollen season). I feel like she's genuinely healthier and happier now. If you care about your cat's well-being, this product is definitely worth it. The powdered Lysine has high-quality ingredients and lasts a while, even when sprinkled on my cat's wet food each night. Highly recommend!