






🐾 Boost your cat’s health with treats they’ll beg for!
Vetoquinol Enisyl-F Lysine Bites deliver a veterinarian-recommended daily dose of L-Lysine in a delicious chicken liver-flavored chew. Designed to support immune, eye, and respiratory health, these treats help manage common feline issues like sneezing and watery eyes. Conveniently packaged in a resealable 6.4oz bag, they’re suitable for cats and kittens of all ages, making immune support effortless and tasty.











































| ASIN | B004U4P1RY |
| ASIN | B004U4P1RY |
| Age Range Description | All Stages |
| Best Sellers Rank | #25,947 in Health & Household ( See Top 100 in Health & Household ) #27 in L-Lysine Nutritional Supplements |
| Brand Name | Vetoquinol |
| Breed Recommendation | All Breed Sizes |
| Country of Origin | United States |
| Customer Reviews | 4.0 4.0 out of 5 stars (3,240) |
| Date First Available | February 17, 2009 |
| Date First Available | February 17, 2009 |
| Directions | Directions for use: For kittens under six (6) months of age: for daily administration give six (6) bites (250mg) twice daily or as directed by a veterinarian For cats six (6) months and older: for daily administration give twelve (12) bites (500mg) twice daily or as directed by a veterinarian. Close bag tightly after each use. |
| Included Components | 1 - 180g Bag |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 5 x 2.75 x 8 inches |
| Item Package Dimensions L x W x H | 7.87 x 5 x 1.1 inches |
| Item Weight | 6.72 ounces |
| Item model number | IMW034039 |
| Item model number | IMW034039 |
| Manufacturer | Vetoquinol |
| Manufacturer | Vetoquinol |
| Model Name | Enisyl-f Lysine Treats |
| Number of Items | 1 |
| Product Dimensions | 5 x 2.75 x 8 inches; 6.72 ounces |
| Size | 6.34 Ounce (Pack of 1) |
| Specific Uses for Product | Eyes, Sneezing |
| Target Audience Keyword | ( reptiles | amphibians ), dogs, house-cats |
| Warranty Description | See Manufacturers Website |
L**.
Healthy chews
Helps maintain my cat's immune system & they must taste good bc he loves eating them
C**R
Cats recommend them 4 - 0
Our vet suggested these for one of our cats. The cat Beau will be on Lysin for the rest of his life and the vet cautioned that they have had issues with some cats taking the Lysin. Well not these Lysin. We have a clowder of cats and in the morning they all line up for these Lysin bites. They love the taste, it does not cause any stomach issues or diarrhea, no stool softness. The treats do not smell or have an after odor. They seem very effective and have maintained our cats energy levels. If you are purchasing a Lysin product I can tell you these are the "treat" of choice for Mimi, Beau, Bobo, and Atticus. They come and remind me it is time for their treat.
B**H
These really work and could save your cats' lives!!! These work better than the oral gel.
This review is for "Vetoquinol Enisyl-F Lysine Bites: L-Lysine Chews for Cats & Kittens - Chicken Liver-Flavor". Let me start by saying that if your cats / kittens have the herpes virus (aka feline viral rhinotracheitis (FVR)) then these bites can save your cats' lives. I bought these for my sweetheart for the stray cats and kittens that she has hanging around her house that all got really, really sick and were all showing symptoms of FVR. This stuff is like a little miracle in each bite. After giving these bites to the one cat for a day, he didn't have a runny nose anymore. Then after the second day, he could meow again and the crusty stuff on his nose was gone. Then after the third day, the crusty stuff on his eye was going away, and he could open his eye again. By the fifth day, the respiratory problem seemed to be going away, and he could breathe right again. Now I'm not a vet nor is my sweetheart, so we can't say positively that these bites are a cure and didn't just help with the symptoms. BUT, these bites also helped some other cats and some kittens that had the exact same symptoms going on, and they got "better" also and just as quickly. I can't see where that is just a coincidence. We firmly believe that these bites helped save the lives of those cats / kittens. Now anytime the cats get a runny nose or something like that then my sweetheart gives them these bites for a few days and it seems to clear it right up. I had previously purchased the Vetoquinol oral gel for her for the cats and that seemed to work really well. These bites work SOOO much better and the cats seem to love the taste. (The oral gel must not taste as good because the cats didn't want to eat it after a while even though they seemed to love the taste in the beginning.) We highly recommend these bites and will definitely be buying more of these bites instead of the gel. They really work!!!!! Hope this helps and have a great and blessed day! :)
F**G
Formula has changed for the worst!!
I have three cats who require lysine. These treats were my go-to until now. They have changed the formula and it is now terrible -- only one of my three cats will touch them now. In the past, the treats have been small, dark brown, uniform in size, and sort of chewy. My cats went crazy for them. But the last package I ordered contained treats that were pale, crumbly, and not uniform in size. They looked old/stale/damaged, so I thought it was a bad batch and returned that package. I purchased another from a different seller and received the same thing -- the second package contained the same pale powdery treats. Looking through the reviews and product questions, it is clear that the company has changed the formula. However, I see some people saying the pale ones are the new formula, and other people saying the dark brown ones are the new formula. For me, the pale ones are new, and they suck -- I want the dark brown ones from the past. I emailed Vetoquinol directly from their website to ask for clarification, but they didn't bother to respond. So on top of my general dissatisfaction, I am also really underwhelmed by their customer service. I'm attaching a picture to show the two versions. On the left is the pale crumbly version that they seem to be selling now; if you squeeze these or try to break them, they just dissolve into powder (and the bag had a good one inch of powder in the bottom). On the right are the smaller dark brown ones that my cats have enjoyed in the past -- you can see in the picture that these can be torn into smaller pieces with no crumbling. Since apparently it isn't possible to get the small dark brown ones anymore, I am forced to find another brand. I find it really disappointing that the company would mess around like this on a product that many of us rely on to keep our cats healthy, and that we pay a premium for ($25+ per bag!). If they had responded to my inquiry, I might feel a little less disgusted, but they didn't, and I see others posting here who tried to get answers but were also ignored. I think that stinks, just like these new treats do. (PS - Both sellers I bought from were fine, no complaints there. This is purely an issue with the manufacturer.) UPDATE: Well it seems they have now settled on a new formula that is totally different from the versions I mention in this review. Now the treats come in new packaging (plastic pouch with a clear front panel), and the treats are dark-ish brown, super dense, and hard as a rock. My cat can't chew them, and I can't break them with my fingers, but I am able to cut them up with a sharp knife. The cat will then eat the small pieces. I don't know what is going on at Vetoquinol, but they sure seem to be going further and further downhill. Unbelievable.
A**R
Our 10-year-old, male cat absolutely loves these. I gave him one to sample and he tried climbing up my leg to get to the bag in my hand immediately afterwards, this is not something he does. It has only been a few days that he has been taking them now, so not sure of the health benefit effect, very much hoping they help with his upper congestion & sneezing, which doesn't seem to be getting much better no matter what the vet prescribes.
H**I
Meh
J**N
Not one of my three cats will touch these.. I have a cat with Feline Herpes virus and I use the same brand lysine paste for her, but she will not touch these
M**D
Very satisfactory vendor! Good product. Mostly keeps my little cat's rhinosinusitis at level of no symptoms ...
S**D
We have 3 cats in our household and all of them refuse to it these treats. One of my cats tried a piece and immediately spat it out. I totally understood why when I tried to chop one piece with a knife to add it to their wet food.....they are so hard to cut, never mind about chewing these things! Whole package went strait to the garbage!
Trustpilot
5 days ago
2 weeks ago