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4.5
147 Reviews
5
73% (108)
4
16% (24)
3
3% (4)
2
2% (3)
1
5% (8)
90% Recommend this product (132 of 147 responses)
By Karen
No sienten el sabor los gatos
August 28, 2024
Tiene un sabor que gusta a los gatos y según el veterinario tiene una muy buena concentración de lysine
* This product review was collected by the manufacturer.
By Amazon C.
Cant comment on taste, its for the cat.
May 13, 2024
Just had to chuckle as the review asked me to rate flavor, I assume it is OK because the cat doesn't refuse to eat his food with this mixed in.So far it is controlling my cat's weepy eye problem as well as the expensive brand from the vet.
* This product review was collected by the manufacturer.
By Reader/Writer/All-Around C.
18 year old cat breathes better with this.
April 10, 2024
It smells fishy but the cat likes it and it's not so terrible that we humans can't tolerate it. The cat also seems to enjoy the taste. I can really tell that it works for her though because we've run out and almost immediately she starts to sound "rattly" when she breathes. Very happy with the purchase.
* This product review was collected by the manufacturer.
By Linda J.
Very nice!
January 28, 2024
Great value
* This product review was collected by the manufacturer.
By jeannie w.
Works great with canned cat food
December 4, 2023
We all know l-lysine taste horrible, but this is flavored. They won't eat it by itself yet when I mix it with moist cat food, they will eat it. The unflavored type of lysine mixed with moist food is harder to get them to eat .This is a little more expensive but it's worth it
* This product review was collected by the manufacturer.
By linda a.
Jar had been opened and the seal broken
October 31, 2023
My cats love this mainly because of the yeast smell. They will eat food with this sprinkled on it. Disappointed that it was open and don't know if any had been taken out because it was certainly not full and hopefully it's safe
* This product review was collected by the manufacturer.
By Theo
My cats LOVE this product!
October 29, 2023
Highly Recommend! Worth every penny! We were recommended to purchase the Felisyl due to our two cats getting continuous colds their first year. We have been using this product for over three years now and it's the only L-Lysine product I trust to give my fur babies. The cats go crazy over the taste- they get so excited when I sprinkle some on their wet food. It lasts a good while. Only down side is that it get's stuck together sometimes, but I can break it apart easily.
* This product review was collected by the manufacturer.
By Danielle
Purchased for my kitten
June 27, 2023
Purchased for my kitten to encourage him to eat his food. It has helped him he is eating his food.
* This product review was collected by the manufacturer.
By Jenny
Great for multiple cat households on a budget.
February 16, 2023
My Dad has a colony of ferals that have become outdoor pets. Recently some have began sneezing and coughing, trapping them and taking them to the vet wasn't an option so I researched what we could give them without a prescription and found this. Not only will they eat it out of his hand almost by itself; but their sneezing and other symptoms are almost gone. Definitely recommend this stuff, especially if you have a multiple cat household.
* This product review was collected by the manufacturer.
By Lis D.
amazing
September 8, 2022
this little one eyed FIV+ baby was sneezing his head off the first week he was home, but after just a week using this he's barely sneezed at all & no green snot.hoping it'll help keep the vision he has left! & i have high hopes!
* This product review was collected by the manufacturer.
By Lisa W.
Great probiotic
May 15, 2022
The cats love the flavor. So easy to get them to take their probiotic because it takes so good.
* This product review was collected by the manufacturer.
By Karin T.
PA
Felisyl
November 28, 2020
I have been buying this for years. I am with an animal rescue and using this product in the kitten wet food AND adding a pinch when I have bottle babies (even a kitten i rescued at 1 day old) NONE of my kittens ever got sick and my bottle babies thrived and grew up to be healthy adults. I continue to use for my adult cats and recommend my adopters to continue using for their new adopted kittens cats. And all have continued be healthy (along with YEARLY WELLNESS EXAMS and necessary vaccines!) And this product also helps my cats with eye herpes (weepy eyes) and special breeds with weepy eyes. As a cat rescuerer I HIGHLY RECOMMEND this product!!!

Merchant Response:Karen, Than kyou for your review of Felisyl. The pictures are excellent and bless you for the work you do with these felines.
Cons
  • None
By Ray
Good product.
November 16, 2020
I use this for my cats who have colds or sniffles on occasions. Also for chronic issues that now only flare occasionally. It is a little expensive for the amount you get compared to the non-flavored L-lysine. Also it is slightly granular, which I don't perfer, but so are the other L-lysine products I have purchased. It seems they taste the difference in texture and some animals seemed initially turned off by it. After a while they seem to get used to it. If it were a finely ground powder it would probably be more palatable initially with less rejection. BTW it does seem to work pretty well. Have been using L-lysine based supplements for those conditions for years.
* This product review was collected by the manufacturer.
By Jennifer
Kittens like it and I love the measuring spoon it comes with!
August 19, 2020
Bought for my sneezing kittens. Wanted to help build their immune systems. They were born on a porch. Most likely have feline herpes. They don't mind the taste and I love the measuring tool it comes with.
* This product review was collected by the manufacturer.
By Katherine
Amazing
May 17, 2020
My kitten was very sick and my vet recommended me to buy some immune System Support product for my cat. This thing helped my cat A LOT. She is now the healthiest cat I have ever had! She runs and play all day. Much recommended!
* This product review was collected by the manufacturer.
By Debbie
My fur babies enjoy this specially with wet food.
May 1, 2020
I put 1 cup in wet food for my fur children and they ate the food without any issues. Thank you this is a very good product and yes I recommend it :)
* This product review was collected by the manufacturer.
By Gail B.
Easy vitamin delivery. Flavor topping the cats love
January 7, 2020
My catsLove the taste and run for the bowl. This makes me happy to know my cats got their vitamins
* This product review was collected by the manufacturer.
By Jessica B.
Good
January 2, 2020
Works great. My cats loves the taste and would eat it out of the container.
* This product review was collected by the manufacturer.
By Amazon C.
Natural help for feline herpes
January 1, 2020
My cats really like the taste. I'm hoping it helps their drippy eyes because I cant keep them on antibiotics forever.
* This product review was collected by the manufacturer.
By Placeholder
Works Well
December 23, 2019
Poor kitty had a number of health issues, so vet prescribed Felisyl. He was much better after a month and continued treatment until it was all gone. Much happier and healthier now!
* This product review was collected by the manufacturer.
By Birdie
My cat loves this!
December 21, 2019
My cat will eat this right out of the container without waiting for me to sprinkle it on his food, so I can't remove the lid until I'm ready to use it.
* This product review was collected by the manufacturer.
By Mary L.
I don't want my8 senior cats to catch colds this year
December 16, 2019
I have senior kitties in my house and this winter will be very harsh in New England where I live. It's much smarter and less expensive to protect my kitties early than it is to take them to the vet later. Felisyl L-lysine powder sprinkled into their canned cat food is the best way to help boost their immune system to fight off colds, runny eyes, sneezing etc. They just feel better when they're on Felisyl.
* This product review was collected by the manufacturer.
By nata
Taste
December 2, 2019
My cat does't want it.
* This product review was collected by the manufacturer.
By Brianna S.
Easy to disguise in food
November 21, 2019
My cats don't even notice it when sprinkled and mixed with their food
* This product review was collected by the manufacturer.
By Mary A.
HEALED MY CATS EYE PROBLEMS
November 6, 2019
THIS PRODUCT WORKED FOR ONE CAT BUT NOT AS WELL FOR THE OTHER. THEY ARE MOTHER AND SON. I CAN ONLY ASSUME, SHE EATS MORE OF THE FOOD WITH THE PRODUCT IN IT OR HER IMMUNE SYSTEM IS SOMEWHAT STRONGER THAN HIS. I PUT TWO SCOOPS OF IT DAILY IN CANNED FOOD TO WHICH I ADD A CAN OF WATER. I LEAVE IT OUT FOR ABOUT 30 MINUTES AND DON'T MONITOR HOW MUCH EACH CAT EATS. IT HAS HELPED HIS HEAL, SOMEWHAT BUT NOT AS WELL AS HERS. THEY MUST LOVE THE FLAVOR SINCE THE PLATE IS CLEAN EVERYDAY.
* This product review was collected by the manufacturer.
By Ana R.
Cats don't seem to mind it
October 31, 2019
I mix product with their food and they eat with no problem. The tiny scoop makes it easy to measure amount. Hope it does what it claims. Haven't notice any major difference as of yet.
* This product review was collected by the manufacturer.
By Amazon C.
Cat
October 16, 2019
Works great
* This product review was collected by the manufacturer.
By Amazon C.
Love this product
August 27, 2019
Cats both ate it no problem.
* This product review was collected by the manufacturer.
By charles r.
Feline tasty vitamin supplement
July 1, 2019
Spiffy product
* This product review was collected by the manufacturer.
By Kat
My kitty's love the taste
April 29, 2019
I ended up putting these in a large empty spice container that I washed out super good and I shake them on the food
* This product review was collected by the manufacturer.
By Linda
Excellent
April 26, 2019
Mixed this in with wet food. They didn't even notice. Will buy again.
* This product review was collected by the manufacturer.
By Norma Z.
Great product
April 14, 2019
I've been using this product for over 2 years for my cat who has FIV. It has minimized frequent respiratory issues. I sprinkle and mix with his wet food, as directed.
* This product review was collected by the manufacturer.
By Brox
Cats will eat it
March 9, 2019
Works well and cats like it. My new kitten had a runny nose and after adding to food for a week it cleared right up and she has been fine ever since.
* This product review was collected by the manufacturer.
By Amazon C.
recomenable. kitten with sinus drainage
February 15, 2019
perfect organtic antibiotics. they are great. cats love to eat it. fine powder with a scooper included. lots in a small jar. it will go a long way. it worked withint two doses.
* This product review was collected by the manufacturer.
By Kevin B.
Keeps the barn cats healthy
January 15, 2019
Just sprinkle it on and all their runny noses and yucky eyes get better
* This product review was collected by the manufacturer.
By Lana L.
I saw little improvement after using this product.
January 9, 2019
I got this for my cat with allergies.
* This product review was collected by the manufacturer.
By Lorri Y.
Our kitten has lifetime respiratory issues...
December 26, 2018
Much more economical to purchase the l-lysine support he needs here! It is not the same brand, but he happily consumes it with every meal!
* This product review was collected by the manufacturer.
By Amazon C.
Great!
October 29, 2018
Great for keeping the kitties healthy! I give in every meal. Recommend by my vet!
* This product review was collected by the manufacturer.
By Alicia M.
quick delivery
October 2, 2018
Really helps my cat with URI
* This product review was collected by the manufacturer.
By Katharine R.
Great product
September 11, 2018
Use this for a stray that adopted me. Her health has been turning around ever since
* This product review was collected by the manufacturer.
By Kindle C.
Recommended for all kitties every day.
April 23, 2018
I have multiple kitty household and this is the most important supplement that I can give them. They like the taste and or smell. I just sprinkle on their food every day. One container last a good month, not too costly to be used every day.
* This product review was collected by the manufacturer.
By Olga H.
Didn't care for reaction it gave my cat.
April 10, 2018
It gave my one cat the runs.
* This product review was collected by the manufacturer.
By Chris
Indiana
Easy to use.
April 9, 2018
My cat has been taking this product for several years as prescribed by his veterinarian.
By Velemajstor
excellent product, my cat loves it and she stopped ...
March 29, 2018
excellent product, my cat loves it and she stopped sneezing , and this power has taste like fish so its wonderful product,
* This product review was collected by the manufacturer.
By Robert J.
Five Stars
March 27, 2018
Really works, builds immune systems
* This product review was collected by the manufacturer.
By Nora B.
but it seems to be good so far
February 26, 2018
Only been using it for a couple days, but it seems to be good so far! My cat who needs it wouldn't touch the lysine chews, but she doesn't seem to notice this at all! Happy that I can boost her immune system without any trouble.
* This product review was collected by the manufacturer.
By Twohrslater
This works great!
January 31, 2018
After over 2 years of trying everything from prescription meds to over the counter allergy pills to organic help this stuff seems like a miracle! She has had feline herpes since she was a kitten & used to just have bouts with it maybe twice a year. The past 2 years she has been sneezing, snuffy & feeling horrible almost constantly. My finicky cat has no problem eating it when mixed with wet food & her health has improved greatly since we've started using it. Funny I got the request to rate this when I was about to order another container.
* This product review was collected by the manufacturer.
By Elizabeth
The company was really good about getting me a refund though
November 15, 2017
it gave my cat HORRRRRRRIBLE diarrhea!!! The company was really good about getting me a refund though. So 1 star for the product but 5 stars for the of the company itself.
* This product review was collected by the manufacturer.
By kp P.
Real bargain
October 3, 2017
Works great! My youngest kitten was diagnosed with herpes. He had chronic sneezing, watery eyes & runny nose. The vet prescribed lysine & charged $26 for it! I ordered this and it works just as well. One scoop twice a day in food. No sneezing, runny eyes/nose. Just s healthy & happy cat.
* This product review was collected by the manufacturer.
By MaryMoJo
Good for immune system & cat likes it
September 26, 2017
As advised by our vet, we use it daily mixed with wet food for a shelter rescued cat with chronic herpes-like upper respiratory virus. It seems to reduce his sneezing & eye discharge and prevent more severe symptoms. We have tried the much cheaper human grade lysine powder, but kitty prefers the taste of this brand that adds flavoring. I think this works as good or better than other brands. If you can't afford this though, I would recommend the large container of lysine for humans ( made in USA) but using 2 scoops (the ones included with cat lysine) instead of just one per meal or day depending on symptom severity. It gets expensive using every day for years or for more than one cat.
* This product review was collected by the manufacturer.

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