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Immune Support L-Lysine Powder for Cats

Immune Support L-Lysine Powder for Cats

Regular price $24.99
Regular price $49.99 Sale price $24.99
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  • Give your cat the freedom to breathe effortlessly and explore the world with bright, clear eyes. Sniff 'n' Chomp L-Lysine Powder is the ultimate daily defense shield every feline needs to fight off the bothersome sneezing, runny nose, and upper respiratory congestion that slow down their natural curiosity. Our high-purity formula doesn't just alleviate nasal discharge; it reinforces their immune system from the inside out, ensuring cats and kittens at all life stages maintain their natural defenses and long-term immunological balance.

    To provide the best possible care, this premium blend is fortified with Essential Taurine and L-Lysine to support not only respiratory and ocular health but also cardiovascular strength and optimal digestion. Thanks to its delicious natural salmon flavor, this easy-to-mix powder is an instant hit with even the pickiest eaters, ensuring rapid and effective nutrient uptake without the typical mealtime battles.

    Choose a trusted, expert-recommended solution to help your furry companion feel more comfortable, energetic, and active every single day!

    • Formulated with L-Lysine and Taurine to support the immune system
    • Vision
    • Cardiovascular strength
    • and Digestion.

Daily Immune & Respiratory Support

Balanced formula for immune health, respiratory comfort, and visual function

Made with high-purity L-Lysine & Taurine

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90-Day Money-Back Guarantee

Scientifically Formulated Immune & Wellness Support

Immune & Respiratory

Immune & Respiratory

Supports the body's natural defenses and healthy respiratory function.

Vision & Heart Health

Vision & Heart Health

Supports optimal visual function and healthy cardiac performance.

Irresistible Flavor

Irresistible Flavor

Infused with natural salmon protein, while providing high-quality amino acids.

Digestive Support

Digestive Support

Includes prebiotic fiber to supportt and promote overall digestive wellness.

Real Benefits You’ll Notice Every Day

Support immunity, energy, and overall wellness with an easy daily routine your cat will love.

Immune System Support
Supports your cat’s immune system, respiratory health, and overall vitality across all life stages, helping maintain balance and daily energy.
Delicious Salmon Flavor
Natural salmon taste makes it highly palatable and easy to mix, ensuring consistent intake and effective nutrient absorption without resistance.
Clean & Functional Formula
Crafted in the USA with natural ingredients that support immune function, vision health, cardiovascular strength, and digestive balance.
Easy Daily Routine
Just once a day: easy scoops based on age. Notice improvements in 7–14 days, with stronger results after 3–4 weeks of consistent use.

Why Trust Us? See the differences

Sniff 'n' Chomp Others
Active Ingredients per Scoop 500mg Less than 250mg
Clinical Dosage Full Therapeutic L-Lysine & Taurine Underdosed / Ineffective
Medical Trust 100% Veterinarian Recommended No Professional Endorsement
Cost per Scoop $0.16 per dose $0.46+ per dose
Manufacturing Standard USA-Made in GMP Certified Facilities Uncertified / Overseas Factories

Ready to see a healthier, vibrant cat?

Join over 100,000 pet parents who trust our formula.

  • 5 stars: 14 (70%)
  • 4 stars: 6 (30%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
D
Doogie
Kitty is feeling better generally, and we're seeing an overall improvement in her health!

Well, we decided to give this a try in our elderly cat. She coughs and sneezes quite a bit and gets runny eyes somewhat frequently. She also has a VERY sensitive stomach and is very picky about foods and supplements. She also has seizures quite often :(So.. test 1: Will she eat it?Yep! She actually seems to not mind this stuff at all. It's easy to mix into one of her meals and it doesn't put her off at all. She must like the taste because normally she'll sniff out and avoid ANYTHING we try to sneak into her food.As far as the efficacy? She seems to be less sneezy, and her eyes have been clearer... But here's the surprising thing (and it may absolutely just be coincidence) - She hasn't had a seizure since we started giving her this. She normally has a seizure once a week, but it's been about 4 weeks with no seizures.I know this is NOT a condition this supplement treats, and I'm not suggesting it's a seizure treatment at all. However, I do wonder if the reduced stress her body is under from allergies and congestion / irritation helps with her seizures / epilepsy.Either way, we’re very happy with this supplement so far. The fact that she’ll actually eat it, seems to tolerate it well, and appears more comfortable makes it worth it for us.

M
M
Good for cats’ health

I have started making my own cats’ food and have been using this in the meals to add more nutrients that can help support my pets’ immune systems and health. This comes in powder form so it is easy to scoop in and mic with the food and it is relatively affordable, so still fits within the budget.I am satisfied with this product.It was shipped quickly and arrived well packaged.

A
Amazon Customer
4.5 stars: lysine can help if your cats will eat it

One of my kitties has frequent eye goop from FHV (she's vaccinated, but apparently it was too late as she already caught the virus before I adopted her from a shelter). Vets often recommend Lysine supplementation to reduce outbreaks since treating FHV with meds is not straightforward in cats.This supplement has a larger scoop than some others I've tried, which each scoop providing 400 mg of Lysine. That's more than many other brands, and the recommended dosage varies a lot, but the brands that supply 100mg are probably not supplying enough for a cat with frequent outbreaks. The real problem I have with the dosage is that my FHV kitty is also the pickiest kitty ever, and she doesn't like much of anything in her food, including this. I am able to sneak a really, really small amount but not even close to a scoop. However, that is the case with all the Lysine powders I've tried (I am always hoping there will be "the one" that she will eat).Another kitty, who is also fairly picky herself, has no problem eating this. With cats, you never know.

E
Eclectic M
Not sure it will last but the cat says this supplement is a winner.

My cat has FHV, and it’s caused all sorts of issues with him. His vets have all recommended giving him an L-lysine supplement. I’ve been able to get him to take it long enough to know it really does work. The problem is my giant petunia is the opposite of food driven. He’ll eat a favorite food for a while but won’t eat all of it. Then he switches to something else. If he sees me put anything in his food, he won’t touch it. I had pretty much given up but decided to give Sniff ‘N’ Chomp a try. So far, I’m glad I did.When I first opened the container and had to dig for the scoop, I thought, “no way is this going to work.” The scoop was huge. I can’t get him to eat a pinch of the other stuff. I couldn’t imagine getting him to eat that great big scoop full of supplement, but I tried it anyway. I mixed it into a portion of the food on the side of his plate. I attributed it to his weird way of eating, but I could have sworn he went directly for the portion with the supplement mixed into it. The next day I mixed the supplement into part of the food he was already eating. And, NO Way! He went right for it and did the same the next day.For now, this is the best endorsement possible. Of course, the picky petunia could easily decide he hates it tomorrow, but I’ve never seen him this willing to eat anything good for him. As long as he will eat it, the price for this wonder is a bargain.

A
Aprtopaz
Great Value and Easy to Mix, But Strong Scent Drove Away My Finicky Seniors

This L-lysine supplement offers a really good amount of powder for the price, making it a budget-friendly option for immune support. The fine powder form makes it incredibly easy to mix smoothly into soft canned food or pureed treats without leaving clumps.However, the product does have a pretty strong scent. Unfortunately, neither of my cats would even try the food once this was mixed in. Granted, they are 17 years old and very set in their ways! Cats are notoriously finicky, so while this didn't work for my stubborn seniors, it would still be a great product for younger kitties or less picky eaters who don't mind the scent and taste.

R
RDJ
Good jar of lysine to feed cats

This is a good jar of lysine if you want to feed your cats. While it's not an overnight fix, lysine seems to have some benefits if fed over time, our FIV cat seems better eating it regularly than not. This jar is nicely priced, and came neatly sealed. It has a scoop, and seems like a good flavor, he ate it without any issue. You can scoop this over dry or wet food, but we mix it with a bit of water and make a soup that he loves, which takes care of feeding both lysine and some hydration. Anyways, this powder is a hit, and seems like good lysine.

A
Anna
Easy to mix and well accepted

I ordered this as a supplemental support product for my cat, who has been diagnosed with FHV. He is currently on antibiotics, so I'm not drawing any conclusions about effectiveness yet, but I plan to continue using the L-lysine after his medication is finished.After 5 days of use, I can say that he readily eats it mixed into wet food and doesn't seem to mind the salmon flavor at all. I also haven't noticed any digestive upset or other side effects.So far, it's been easy to incorporate into his routine, and I'm looking forward to seeing how he does with longer-term use.

V
Veronika Starr
Kitty supplement in a convenient powder form

I'm so glad I found this for my kitty, who is everything to me. Anything that contributes to her immune system and overall wellbeing is something that I definitely want to have in her diet. This powder is easy to measure with the included scoop, and I just mix it into my cats wet food. She hasn't noticed yet. Or if she has, she must like the taste. This jar comes with 60 servings, so it will last for 2 months. This is a great deal. I'm grateful I found this for such a good value, especially given that my cat seems to like it as well.

S
Surfrack
Cat seems to like this powder on their wet food

Our cat seem to be happy to have this powder supplement sprinkled on their wet food. They seem to enjoy the smell so it has been easy to give them a bit of this each day to supplement their diet

K
Kooper
Well liked by my finicky feral feline

I bought Sniff 'N' Chomp L-Lysine Powder for my two cats, but especially for a feral cat whose health isn't the best. He's been dealing with an infection that causes a runny nose, watery eyes, and constant sneezing, and I was hoping this lysine supplement would help boost his immune system and clear up those symptoms.The product is marketed to support respiratory health and reduce exactly the issues my cat is experiencing—sneezing, runny eyes, and nasal congestion—so it seemed like a good match for his needs. After opening the product and removing the safety seal, I set the container down for my cat to sniff it, and he immediately started looking some of the powder out of the container. That was a good sign that till accepted in his food morning.However, the unclear dosage instructions on the label need improvement. It says to give half a scoop for kittens and one scoop for adult cats, but there's no scoop included in the container, and the label doesn't specifies what size scoop is intended. There's also no guidance on how often to administer it—whether that's once daily, twice daily, or with every meal. For a product I'm relying on to help my cat's health, this lack of clear dosing information is concerning and makes it difficult to use the supplement correctly. I wish the manufacturer had included a measuring scoop and spelled out the exact frequency and scoop size in grams or milligrams. Although the active ingredients per two scoops shows two grams on the label, it's still not clear what the dosage amount should be for adult cats.

Y
Yourvoice
great supplement

This supplement is easy to mix into food, making it convenient for daily use with cats and kittens. The powdered formula blends well and is simple to measure for consistent serving sizes. It's designed to support overall immune and respiratory health as part of a regular wellness routine. Since every pet is different, results may vary and it's best used according to the directions or veterinary guidance. Overall, it's a practical supplement that can be a helpful addition to a cat's daily care.

M
Meishel
Purrfect

've been using this L-Lysine supplement for my cat for about 1–2 weeks, so it's still a little early to speak to the full results, but I'm happy with it so far. The salmon flavor seems appealing, and my picky eater has no problem with it mixed into her food. I like that it's made with ingredients like L-Lysine and Taurine to support immune health, vision, and overall wellness. Since most benefits are expected after several weeks of consistent use, I'm looking forward to seeing how she does over the next few weeks. 🐾💕

M
MeoWMoM
Best Cat Health Supplement They Love. 🐈‍⬛

This SNIFF ‘N’ Chomp L-Lysine Powder for Cats & Kittens is my new goto in our feline family.It’s a supplement powder for sneezing, runny nose, respiratory, and eye support, an overall boost to the immune system.It’s salmon flavor & works well sprinkling over their food.As anyone that has cats knows occasionallythey have respiratory issues that don’t requirea vet visit.I’ve found through the years L-Lysine in any form as well as Taurine are great supplements and work well not overnight but overtime promoting immune support, respiratory healthoverall daily wellness & vitality support.For this reason I use often mainly in dropperform until I discovered this powder which has bin a total game changer.I simply spoon the recommended amount over their food and they love it. The salmon flavor is naturally appealing whereas the dropper there was some issues with..I feel like I had hit the lottery!For the amount of health you’re providingthis is a great value especially at this affordable priceTime overtime they chose the food I had scooped this on which is a huge win for me and them too naturally .It’s a simple addition that makes such a notable difference in cats overall health I wish every cat owner could use!Even the feral stray outside gets some!Overall, this is a great product not only healthy it dissolves quickly and goes to work makingease of use 5 stars aloneif I could, I’d give this 10 stars….meow

A
Amazon Customer
cat likes it, no digestive problems

My cat eats this powder with no problems. The powder smells like fish, but I expect that for a cat supplement. I'm trying to help my cat's sneezing. It will take time to see if this helps. The good thing is that my cat enjoys it, and it doesn't cause digestive problems.

a
aaron_with_two_ys
A miracle supplement for picky cats

My two cats, June and Cricket, are total divas when it comes to their food. They usually turn their noses up at any health supplements. I started sprinkling this L-Lysine powder on their wet food and they actually lick the bowl clean. It dissolves quickly and seems to be keeping their eyes bright and their coats super glossy.

B
BookWorm
A Simple Addition That Made a Noticeable Difference for My Cats

I have multiple cats, and keeping everyone supplied with a healthy diet can sometimes feel like a full-time job. I decided to try this L-Lysine powder for extra immune and respiratory support, and I’ve been very pleased with it so far.The salmon flavor was a big plus. I simply mixed the powder into their food, and none of my cats seemed to notice or object to it. That’s a huge win in my household because some supplements are nearly impossible to get them to take.The powder mixes easily, and the included scoop makes it simple to measure the correct amount. I appreciate that it contains both L-Lysine and taurine, two ingredients that are important for feline health. It gives me peace of mind knowing I’m providing additional support for their immune systems, eyes, and respiratory health.The container is generously sized and should last quite a while, making it a good value as well. If you’re looking for an easy-to-administer supplement for your cats or kittens, this one is definitely worth considering. My cats accept it without fuss, and that alone makes it a product I’ll happily keep on hand.

A
Amazon DIY, Pet & Garden Shopper
Easy-to-Use L-Lysine Supplement

I have one kitty that has a cloudy eye and vet recommended lysine. I've used powder, liquids and treat styles - all with varying degrees of success. The treats are more of a miss due to the texture - both our cats love treats but will barely finish 1/2 so I prefer the powdered/liquid supplements because they’re easy to mix into wet food. Many of these powders and liquids are chicken flavored so this is a nice change up for them.* Simple to mix into food* Includes taurine in the formula* Salmon flavor is appealing* Large container lasts a while* Convenient scoop included* Easy addition to a daily routineResults can vary by cat, but the powder format makes it straightforward to use consistently.

K
K
Works well

We have a kitty who needs lysine as a supplement every day to help with his eyes, which were damaged as a kitten, and now he has constant weepy eyes with discharge, as well as a consistent respiratory issue with sneezing. This powder was super easy to mix in with his lickable treat in the morning, and he lapped it up without any issue, so he must have loved the taste of it. The lysine works surprisingly well at clearing up these types of issues, and it's great when the cat likes the taste of it. I will definitely be buying this powder again since it's so easy to use.

V
Val
Healthy cat, happy mom

My cat is super picky with her food and I like to give her lysine as it helps with her watery eyes. Most of the time she won’t eat her food if I put powder mixed in with it. This brand requires a full scoop for an adult cat. I break the scoop up and give her half mixed with her wet food in the morning and the other half of the scoop in the evening. At first she wasn’t sure about her food as I’m sure she smelled it, but now she eats it right up. I think using a full scoop at one time would be too much for a picky eater but holding it up seems to work well for hiding it better. You get a good amount for the price and the scoop is pretty small so it should last a while. I do notice my cats eyes don’t water when I give her this so it definitely helps. I like that this is made in the USA so I feel safe giving it to my cat. Definitely worth a try if you have a picky eater and want to give it lysine.

K
Kisha Reinmiller
Easy to Use Lysine Supplement for Cats

This L-lysine powder was very well tolerated by my cats and was easy to mix into their food. The powder blends in well, and I had no issues getting them to eat it. My only minor complaint is that the powder is extremely fine, which can make it a bit messy when scooping and measuring. Other than that, it is simple to use and seems like a convenient option for households looking to add lysine to their cats' routine. Overall, a solid product that does what it is intended to do.