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🛡️ Keep your cat’s immune game strong — because they deserve the best defense!
Vetoquinol Viralys L-Lysine Powder delivers a veterinarian-recommended 500mg dose of L-Lysine to cats and kittens, supporting immune, respiratory, and eye health by reducing clinical signs and viral shedding of feline herpesvirus type-1. This palatable, fish and poultry-flavored supplement is safe for daily use across all ages, trusted by vets, and designed to help manage common feline health challenges with no known side effects.













| ASIN | B000FULBT4 |
| Active Ingredients | Active ingredients: L-Lysine hydrochloride, 500mg. Inactive ingredients: Brewer’s Dried Yeast, Hydrolyzed Fish (enzymatic), Hydrolyzed Poultry Liver (enzymatic), Mixed Tocopherols (a preservative), Sodium Acid Pyrophosphate, Sodium Sulfate. |
| Best Sellers Rank | #16,497 in Pet Supplies ( See Top 100 in Pet Supplies ) #393 in Cat Health Supplies |
| Brand Name | Vetoquinol |
| Customer Reviews | 4.6 4.6 out of 5 stars (8,565) |
| Flavor | Fish & Poultry |
| Global Trade Identification Number | 00030521041480 |
| Included Components | Vetoquinol Viralys Powder, 100gm |
| Item Form | Powder |
| Item Weight | 0.01 Ounces |
| Manufacturer | Vetoquinol |
| Product Benefits | Immune Support |
| Target Species | Cat |
| UPC | 030521041480 884291149927 |
| Unit Count | 2.5 Grams |
| Volume | 3.5 Fluid Ounces |
D**E
Excellent produit.
J**A
This is very good tonic for cats
K**Y
Have used product before in jel form and now am trying powder for convenience to add to can food. I think this is a very effective product/supplement. Highly recommend 👌🏻
L**H
I've had my car on this Lysine for years now and it truly keeps keep his feline herpes flare ups at bay. Even if he has a flare up this keeps them from getting out of control. I keep our other cat on it as well to protect her from his virus and she's free of it. I believe this really helps boost both their immune systems. Our vet originally told us about it and I was so happy to find it on here. Both our cats love the flavor and it smells just like fish - very important as cats depend heavily on their sense of smell for eating. It's super easy to mix in with their wet food and comes with a little scooper inside.
U**E
A stray 3.5-4 wk old kitten adopted us when she walked into my RV. She was starved & soaked +her backbone/ribs/hips protruded. She didnt know how to eat/drink water. Fed her then found where she came from. 2 days later she was back. Shed walked a long way at-risk owl/ raccoon bait.I kept her/fed/cuddled her. Her owner died that very night from fentynal OD,so it was meant to be. She was very congested w/teary eyes. Likely an upper respiratory infection-calicivirus. I have 3cats + 1-11wo kitten, so whats 1more. But i feared my kitties would catch her virus. 3 days later 2 showed signs; another w/in the week. Other baby, “Boa-Peep” never got sick. Anyibodies from breast feeding milk? I was a vet tech in my younger days & knew they needed amoxicillin when it turned bacterial, but no way could afford vet visit with all my rescues. Researched my options. Collostrum? L-Lysine? Colloidal Silver? I bought L-Lysine @ colloidal silver & had eye drops in my stash. Within 3 days i saw good change feeding them wet food 2x/day w/this suppliment & high concentrated quality colloidal silver staying careful to low doses. The 2 babies got 1/2 scoop each of the L-Lysine w/4 drops silver in wet food. I also used humdifyer w/salt in water and kept area very warm. Im still giving the concoction bc it if I skip a dose it’d come back but only in the youngest kitten- named her “Whisper” (shes deaf and hasnt really meowed yet). Whisper is now a fattened up long-hair tabby and about 5 weeks later she no congestion. She plays w/her foster sister and foster mom has allowed her to nurse with other kitten. Theyre way too old but “Obbi” mom is such a good mommy and its a chance to teach Whisper to play, fight, and clean herself. Ive decided to give all kitties L-Lsyine as a regular daily suppliment. Jar lasts a long time. Comes with little tiny scooper inside jar. I can see this jar lasting maybe 6 months for 5 kitties
Trustpilot
2 weeks ago
2 months ago