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101 Reviews
83% (84)
13% (13)
2% (2)
0% (0)
2% (2)
94% Recommend this product (95 of 101 responses)
By James
Raleigh, NC
Helps with feline sinus congestion
June 13, 2019
I've been using this for a year now. If we skip doses, say gone on vacation and don"t have the pet sitter use it, we return to our cat being sinus congested. She sneezes with much mucus. This keeps it under control.
ProsCat doesn?t mind the taste. She didn?t care for the chewable treat kind of lysine after 3-4. Easy to use pump bottle.
ConsPrice for any lysine. Entirely Pets has the best price though!
So Flo
Service is great
December 7, 2018
Entirely Pets has good service. I found what I was looking for (lysine paste for cats). I don't think it's bad tasting, but it's not all that easy getting down cats' throats with a syringe. When I do, though, it seems to help with immune systems.
By Westernbabe
Oxford, OH
Healthy & Cats Love the Taste
July 17, 2018
I have been using this product for several years for my one cat that has immune issues. I mix it into his food or he eats it straight. I feel it has really helped him.
ProsLove the taste, easy to dispense
By Katiek
North Carolina
So far it's working!
June 28, 2018
My cat has a upper respiratory infection after this she's sneezing a lot less and starting to get her appetite up again. Thank goodness, I hope it stays that way!
Prosmaking cat healthier
ConsHard to dispense
By Jenny L.
Hong Kong
Great features
April 9, 2018
I brought this product a few month, This supplement can make our cats good healthy
By Paul
New Jersey
Works well for my cat
May 8, 2017
This product is easy to use and does a really good job at boosting my cat's immune system.
By Rose
Expiry date
March 25, 2017
After product has been opened and used what is the shelf life? We purchased and used Enisyl-F for our cat and worked great in 2014 and would like to use the opened product and expiry date is May 2017?
By jtjc
Cats love it
February 16, 2017
I've been giving my 10 year old cat enisyl-f Oral paste for Cats 100 ml for ten years. He loves it and comes running when I mention "enisyl" It is a great product and easy to dispense.
By Nikita
Great product.
January 25, 2017
Easy to give to your cat, just add to wet food, they love the taste.
By Linda
Boston MA
Great product
December 30, 2016
My cat has feline herpes, I give this to him as a daily supplement to keep the herpes at bay, it works wonders.
By Momma
Save Money and Vet Trips for Purchasing!
June 25, 2016
After paying tons of money for same product at my Vet's office, I decided to purchase online and have been now for years! Same item and always ships on time! Thanks Entirely Pets!!
By DKing
Good price and shipping
February 26, 2016
This is the same product I get from the vet at a much higher price. Good product, good shipping. I will shop here again
By Sal
Mamaroneck, NY
Enisyl works great for my cat
January 19, 2016
Although this is very pricey, this products works great for my cat when she starts to get that gook in her eyes from a condition developed from the humane society as a kitten. It works wonderful. It give it to her everyday.
By Ferne
South Australia
Best buy ever.
December 22, 2015
I bought my cat as a kitten from a pet shop. Within days of getting him home he started snuffling very badly and developed sores around his mouth. My vet suggested Enisyl F and since starting on that he hasn't looked back. In the last six months he has only had one attack and that was much milder than he was having before I put him on to it. I am very impressed with it.
By 4Persians
Upstate NY
Enisyl-F Oral Paste for Cats
December 21, 2015
I started out with a Vets advice telling me to give a pill to a cat with the Herpes Virus, since he is a carrier and has several problems and constant outbreaks, the Enisyl-F Oral Paste is a BETTER WAY to make sure the cat is getting the Dosage he NEEDS to make sure he is getting the proper SUPPLEMENT for his SIZE. The pills opened up on his FOOD were a JOKE, cats do NOT LIKE TAINTED FOOD!!! My cats walked away once I opened up a pill and put the supplement on their food, the only cat out of 4 of mine that NEEDS this is ONE this PASTE IS GREAT, I can easily use this Pump to put two squirts down his throat early in the morning and he is done for the day. If you have trouble getting this necessary Supplement into your cat, this is a GREAT WAY to get this supplement INTO THE CAT! No pills being spit back out at you, no Un-Eaten Food...just squirt this into the cats mouth, it tastes fishy and they do tend to like it. My Persian has been taking it for years now, although he is tired of it, he still does take it pretty easily.
By bpoage
Roanoke VA.
Good product
November 7, 2015
My Vet gave me enisyl-f for my cat that got a runny nose and eyes. It works like a charm. My my RX runs out I will start ordering it.
By Leslie
Sunnyvale, CA
No Brainer
September 19, 2015
This was a no-brainer--ordered, arrived on time, pet loved it. Will definitely purchase again. Thank you!
By Booh
Whitesboro, NY
overcome the unwilling cat
August 28, 2015
Great stuff, worked on 3 cats when multiple antibiotic/etc approached by vet failed. For the unwilling cat, I prepare a glob on one finger and open their jaw with the other hand just enough to put the Enisyl in their mouth and wipe it off against teeth. Course it's a quick movement and much easier if you're kneeling behind them and have their jaw in your hand. They aren't thrilled, but they get used to it after a bit because they know what you're doing. It makes a world of difference in their health!
By Mochalover
Would use Entirely Pets again.
July 20, 2015
Received the Enisyl-F paste in the estimated time and for half what I would pay at the vets.
By Helles
No more URI's
June 21, 2015
Both my kitties were rescues and frequently had URI's/Herpes outbreaks. My vet recommended this product, and I have seen a tremendous improvement in their overall health. I would definitely recommend this product, especially if your kitty is prone to these URI's.
By Cyndi
Lexington, SC
Effective and Delicious
June 3, 2015
Ensyl-F Oral Paste is effective and my cats all love it. They know when I get it out of the cabinet and all come running to get their treat!
By gps1
health preserver
April 10, 2015
this is very convenient to give to my cat. she usually licks herself clean after she gets this. it has kept her healthy for over twelve years.
South Texas
Our Cats Love It.
April 4, 2015
We have tried other L-lysine products but our cats did not like them. The Enisyl-F Oral Paste has them begging for it.
By Tootsie
Very good most of the time
February 3, 2015
It works better then not using it but our cat has re-occurring episodes of sneezing from her Herpes virus. It would be horrible without the Enysil-F though and I have already recommended it to someone else who has the same problem with his cats and he said it was a miracle. They are so much better and barely sneezing at all. Good product and I will continue giving it to her.
January 22, 2015
I have 2 cats with herpes virus and this works for them.
By Joanne B.
Jupiter FL
Lysine is wonderful!
January 4, 2015
We are happy to have Oliver, our 12 year old rescue cat for 10 years! He came to us with what I described to our vet as the "sneezles"- fits of sneezing and hunks of discolored mucus he would dispel from his nose. The vet suggested I try Lysine and that was many many years ago. I used to give Oli one pump in the AM and some lysine treats at night with great results. He seemed to not enjoy the treats after awhile so I just use one pump in the AM on his food and it seems to work just as good as when I was giving him double. I wouldn't think of missing a dose- this stuff DOES work and I was a skeptic for sure. Best part- Oliver licks it up on his dry food like it was candy. I am sold for sure!
By Reinoud
Amsterdam, Netherlands
christmas miracle
December 28, 2014
we adopted our cat Masha from Greece. After a few weeks there were some signes of the herpes virus (sneezing) and it became worse. Based on the reviews on this "forum" we bought the enisyl F paste. After "serving" it to our cat, the paste became sort of a "christmas miracle". She has practicle no problems any more. Great product
By lillygatta
excellent product
October 2, 2014
This is a wonderful product and I was happy to find it here and save over half the cost at my doctor's. I would recommend this to anyone with a cat with a possibility of feline herpes virus.
By Fouronthefloor
Laguna Niguel, CA
This product works
September 20, 2014
My cats suffer from the herpes virus and this has kept them in check since using it for over six months. I would recommend to anyone who has the same situation to keep them free from the onset of the herpes illness.
By Charl
Boxford, MA
Best Choice
September 4, 2014
We give Enisyl-F to both cats. It was recommended by a Vet to prevent the occurrence of Conjunctivitis. We have been using it for several years now, and it has been quite effective. I definitely would recommend it.
By cathy
venice, fl.
enisyl f oral paste
August 25, 2014
two of my pets have the herpies virus. whenever I give them this enisyl-f paste for three wks. two times a day, they feel much better. this product is the best ever. I have tried other things but they just did not work.
By Cat M.
Elma, NY
Great product
August 22, 2014
My cats love this product. It was initially recommended by my vet but as always, it costs much more when you purchase it from the vet. I found this site and now I order it in bulk. My cats ask for it every morning. It strengthens their immune system and keeps their coat healthy. They love it!
Phoenix, AZ
August 11, 2014
I tried Enisyl-F because one of my cats was having eye problems diagnosed as the herpes virus by our veterinarian. We initially gave her antibiotics which treated the immediate problem but I wanted a long term solution as herpes never is completely cured. The Dr. recommended lysine and I found this product after doing some research. Needless to say -- I am very pleased. The lysine has been effective in managing the virus and it is so easy to give. One plunge of the cap and you have 1 ml. Just a GREAT Product!!!!! Ordering was easy and the price was right!!! Very satisfied with the product and service.
By Flora
buy this here
July 5, 2014
We have 2 cats who need this. The extremely finicky one will eat it if I hide it in his wet food. The more co-operative eats it. It seems to be helping a little. Since this is the third lysine product I have tried, and it's the only one my picky guy will eat, I will keep using it, and getting it here. It's about 40% less than what my vet charges.
By bucky
June 16, 2014
My one cat loves this product and my other cat wont touch it. Go figure, its a cat!!
By KellyKat
Olympia, WA
Convienent and Not Messy
March 20, 2014
Really like the ease of use, dispenses just the right amount and isn't as messy as dispensing from the tube. Our cat doesn't seem to mind the taste. Most the time we just apply it to her dry food, but we've also mixed it in with her wet food. Depends on which food she seems to be eating better.
By Baxter
It really works
March 17, 2014
Duffy, our four year old rescue was diagnosed with herpes virus as a kitten. After the first treatment the vet suggested that we try a daily dose of lysine to help control the virus. I did some online research and found Enisyl-F. In the beginning I would put it on his paw but now I simply put it in a dish to administer it. It is so easy and hassle free to give. Best yet, no herpes flare-ups. He actually looks forward to it each morning.
By MyFelineOverlords
Philadelphia, PA
So easy!
March 5, 2014
Just got this. I'm SO glad that someone finally thought to make a lysine goop for CATS that's FISH flavored instead of maple! My sickly cat preferred the Enisyl treats over other lysine treats, but that wasn't saying much. This is super easy to mix into his wet food, and he likes the taste. I'm waiting hopefully for remission of symptoms, and if that happens this will get a 5th star.
By Bootash
Los Angeles
Saved our life and sanity
January 27, 2014
When my cat was diagnosed with feline herpes I was told that the only way to handle the issue was to have him take heavy duty antibiotics that for the most part would make him sick and were hard to administer so it was suggested I have the treatments administered at the vet for 30 days straight..,what???? The second suggestion was enisyl-f twice a day for the rest of his life. He would never rid himself of the virus but this would keep it under control. AND SO IT HAS for the past 5 years! Easy to give; he likes it (well, he doesn't fight me on it); and his eye infections are under control with some eye drops every once in a while. Don't know what we would have done without it. Big plus...the vet charges $35 for the can get almost two thru Entirely Pets and the products show up at your door in a matter of a few days! I'm thrilled and so is my boy.
By Lynn
So worth it
December 17, 2013
My cat wouldn't eat it directly so I had to mix it in his food. After a few days, his snotting & sneezing decreased by 90%. I went on vacation & my daughter watched him. Well I didn't take the Enisyl-F to her house & he got "bad" again. I'll never make that mistake again. Once I returned, I started him back up again. He's doing so much better again.
By Buddy
Jackson, TN
My vet suggested this product.
November 27, 2013
This is the cheapest place I can buy this product. My cat likes it so much he will lick it off my finger. It is the only product that helps my cat with Feline Herps. Keeps him going.
By Owner9
Cat Enjoys Taste
November 11, 2013
Not sure about total medical effectiveness, Lysine was recommended by vet. My cat licks straight from my finger twice per day. Think she likes the taste and it is easy to administer. As to recommend to friend, only to speak to ease of administering, not medical effectiveness.
By Kit's M.
Only L-Lysine Product our Kit will take.
October 27, 2013
Tried chews and powder and it just was not going to happen. Our Tortie has plenty of Tortitude!
By dee
new york
cat loves it
October 14, 2013
the best for cats with feline herpes virus
By loves c.
Only if cat likes "goop"
October 11, 2013
I have one cat that will eat anything from my hand/finger, so I decided to try the Enysil-F Paste when she started having trouble eating the 'treats'. Started out good, but then she wouldn't take any more. Have can stored in fridge and occasionally try, some times with luck, other times no interest. Will stick with the treats from now on.
By frog
Fluf really enjoys her jelly
September 19, 2013
This was the first type of Lysine which our vet gave for my companion's Feline Herpes and she has enjoyed it so very much. On occasion she decides she would rather not have it so I gently put it on the roof of her mouth. She does not seem to mind but would rather make the decision herself.
By e m.
have used this product for years
August 17, 2013
helps stops my cat from sneezing. i like producsts from vetoquinol.
By BobAlex
Our Experience with Enisyl-F Oral Paste for Cats
August 6, 2013
In the Summer of 2008, we got two kittens from the local Humane Society. One came to our home with Feline Herpes. He got worse, and our Vet. recommended Enisyl-F paste. We have been using it ever since and when our tomcat gets to sneezing and is congested, we increase his dosage. It has kept him going and he takes every time with no objections - must have a really great smell and taste for cats. We thank you for supplying this product.
By nancy
Northbrook, IL
Enisyl-F Oral Paste for Cats - 100 mL
July 9, 2013
I have been using Enisyl-F Oral Paste for Cats - 100 mL for several years now for one of my cats who has eye problems and it has really helped her eyes to be much less crusty. My vet recently requested that I use it as a supplement for another one of my cats who has allergies. It has also helped him to feel better. I just press down on the button on the can, it distributes the correct amount and spread it on the cats' fur and they immediately lick it off.
By acdc
Just what I needed
July 3, 2013
My cats like the taste and texture. Mixed with their food they will eat it without a problem.

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