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🐾 Keep your cat thriving—because wellness is the new cool!
Pet Honesty’s Cat Immune Support Lysine is a 30-day supply supplement combining L-Lysine, Colostrum, Quercetin, and Omega-3 to support immune health, relieve allergy symptoms, and promote skin and digestive wellness. Vet-approved and loved by cats, its crunchy chicken-flavored bites make daily care effortless and effective.

| ASIN | B0C2B7F597 |
| Active Ingredients | L-Lysine, Colostrum (15% IgG), Omega-3s (Fish Oil, Lecithin), Beta Glucan (source of prebiotics), Quercetin Dihydrate (95%) Active Ingredients L-Lysine, Colostrum (15% IgG), Omega-3s (Fish Oil, Lecithin), Beta Glucan (source of prebiotics), Quercetin Dihydrate (95%) See more |
| Allergen Information | Non-GMO |
| Best Sellers Rank | #1,448 in Pet Supplies ( See Top 100 in Pet Supplies ) #1 in Cat Antioxidant Supplements |
| Brand | Pet Honesty |
| Brand Name | Pet Honesty |
| Customer Reviews | 4.5 out of 5 stars 2,702 Reviews |
| Flavor | Chicken |
| Item Form | Crunchy Bites |
| Item Highlight | Crunchy & creamy cat vitamins with quercetin, omega 3 fish oil & vitamin e, supports immune health & allergy relief for cats |
| Item Type Name | Supplement |
| Item Weight | 0.11 kg |
| Manufacturer | Pet Honesty |
| Manufacturer Part Number | 850038728557 |
| Model Number | AS-DT-8557 |
| Pet Type | Cat |
| Product Benefits | Anti-Hairfall, Antioxidant, Digestive Health, Immune Support, Skin Care |
| Specific Uses For Product | Coat, Itch Relief, Outdoor, Seasonal Allergies, Stomach |
| Target Species | Cat, Chicken |
| UPC | 850038728557 |
| Unit Count | 3.7 Ounce |
| Warranty Description | Lifetime |
A**R
Finally Relief for My Sneezing Kitty – And She LOVES the Taste!
If you have a cat that struggles with sneezing, watery eyes, or seasonal allergies, this supplement is a total game changer. My cat used to have frequent sneezing fits and occasional itchy skin, especially after spending time near open windows or during seasonal changes. Since starting these I-Lysine treats, I’ve noticed a clear improvement in her breathing and overall comfort. I love that this formula goes beyond basic lysine. The combination of L-Lysine, Quercetin, and Colostrum really makes this feel like comprehensive immune and respiratory support. It’s reassuring knowing the antioxidants help defend against irritants while omega fatty acids support her skin and coat. It feels like it’s working from the inside out instead of just masking symptoms. The biggest surprise? She actually gets excited for them. The crunchy outside with the creamy center and chicken flavor must be irresistible because she eats them like a treat. For picky cats, that alone is worth five stars. I’ve also sprinkled them over food with zero issues. I really appreciate the clean ingredient profile — no fillers, no artificial colors or preservatives — and that it’s made in the USA by a NASC member company. That kind of transparency matters when it comes to my pet’s health. Overall, this has helped keep the sneezing, itchiness, and runny eyes at bay while supporting her immune system year-round. Happy cat, happy owner. Highly recommend to any cat parent dealing with allergy struggles!
M**B
WARNING: Works great, but may cause explosive diarhhea!
My cat has been having severe allergy symptoms. Runny nose, sneezing, weepy eyes. He's been miserable. Got this product yesterday and decided to start him this morning. He loves the flavor, and I gave him the recommended dosage. His allergy symptoms cleared up, so FIVE STARS for that, but he also had a major blow out. Poor fella has been feeling miserable all day. After many hours he is finally acting like his old self again. Because the product works SO WELL for its intended use, I highly suggest starting with one bite and testing your cat's tolerance very slowly.
W**R
Great Product! Cats Love It!
Most of my cats love these! In fact any time they hear a bag rustling, they think it's "treat time". The important thing to remember is that these are vitamins and to follow the dosing instructions on the package -- one treat per pound of cat. I first bought these at a brick and mortar store. They were a little more expensive, but I believe in supporting local businesses whenever possible. However, it seemed like it was pretty hit or miss as to whether they were in stock, so I started buying them from Amazon. I had a couple of cats that had mucky eyes. I started giving them these supplements, and in a couple of weeks their eyes had cleared up. I definitely recommend this product to all those cat parents out there.
M**Y
Did the formula change?
I have purchased this product four times. It was wonderful. It helped my cat tremendously. He no longer was sneezing or had runny eyes. I’m not entirely sure what happened with this last batch because neither of my cats will eat it at all. That is the only reason that you got a four star otherwise you would’ve had a five star. This may just be with my cats. I just wondered if you changed the formula in someway regardless I enjoyed your product while I was able to use it, but my cats refuse it at this time however, other cats may benefit from it.
S**N
Helped my cats skin irritation and congestion ⭐️⭐️⭐️⭐️⭐️
My cat has severe allergies, and these treats have made an incredible difference for him. I can immediately tell when he’s taking them versus when he’s not, which is why I know they’re highly effective. He absolutely loves them and gets excited every time it’s treat time. The digestibility is excellent—he has had no stomach upset or digestive issues at all. The chewability is great as well, and he has no trouble eating them. The texture is similar to regular dry cat treats, but with a softer center that makes them even more appealing. The softness seems to make them easier for him to enjoy. Since my cat is on the larger side, I typically give him 13–14 treats first thing in the morning. I first found these after a vet visit where he was cleared of mites and diagnosed with severe allergies. I was searching for something to help with his skin irritation and allergy symptoms, and these turned out to be exactly what he needed. Before using these treats, he was constantly itching, sneezing, and even losing hair from scratching so much. His nose was often congested, and his breathing seemed uncomfortable. Since starting these treats, the itching and sneezing have stopped, his breathing has improved significantly, and his nose is no longer congested. He also seems much more comfortable overall, which has had a calming effect on his daily behavior. I’m extremely happy with the results and will continue purchasing these treats. They’ve made a huge difference in my cat’s comfort, health, and quality of life.
L**D
Pet Honesty has helped him so much in every category, immune, hairballs, an his coat is beautiful 😍
My cat absolutely loves these vitamins he waits for them... Great product
F**N
My cat doesn't like the flavor of these but that's not saying they're bad or anything.
I cannot get my cat to eat these. At first he did try them. After that I tried feeding him one and he would take it in his mouth and just drop it and walk away.
D**E
Immune chewy treats
Not for picky cat eater - put them down & they wouldn’t even smell them; had to throw away.
S**N
Great product.
My cat has seasonal allergies. She loves these and they work. Do not upset her delicate digestive system. Better than probiotic powder. Easier to administer she just eats them.
A**R
Satisfaite
Mon chat de 10 ans a eu une période d'éternuements (allergie) et quad j'ai vu et lu ce produit, me suis dite, je ne perds rien. Alors, je lui en ai donné une fois par jour, selon son poids. Et ça n'a pas été long, il éternuait moins et ensuite, plus du tout.
M**N
Who knows with fussy cats
I'm sure they are good but my fussy cat wont eat them.
S**H
Un produit qui fonctionne
Mon chat les adorent !!!! Quand j'oublie de lui donner le matin il les réclament avec appétit. Il commençait un rhume de chat, il avait des éternuements, une petite toux et après 3 jours a prendre la lésine les symptômes ont diminué jusqu'à disparaître. Je recommande !
D**I
My cat loves them!
My cat loves them! His last lysine treats were hit and miss. Sometimes he'd throw up ten seconds after eating one...or he wouldn't eat at all. These, he gobbles them up and begs for more! An easy way to get lysine into our little guy!
Trustpilot
2 months ago
3 weeks ago