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Enisyl-F Lysine Treats (6.35 oz) Video

Enisyl-F Lysine Treats (6.35 oz)

Item: IMW034039
Compare to: $28.99
You Save: $6.83!(24%)

NASC Certified

This product has met all of the stringent quality and safety standards set by the NASC.

The NASC (National Animal Supplement Council) is a non-profit self regulatory group that set specific guidelines to which manufactures must strictly adhere.

This seal is meant to minimize risk by providing an easy way of communicating to consumers that a product and its manufacturer meet particular standards of quality, customer safety and service.

Those products that have the seal for NASC Quality and Safety standards have been strictly audited and were determined as meeting the following criteria:

  • Consistent manufacturing quality control
  • A system for evaluating complaints and adverse events
  • Clear and accurate labels compliant with codes and restrictions for all forms of labeling


It's now easier than ever to provide your cat with the L-Lysine supplement he or she needs. 5 of these tasty, poultry-flavored treats contains 250mg. L-Lysine treats make it simple to accurately provide the appropriate dose of L-Lysine for your cat.

Enisyl-F Lysine Treats are a palatable source of L-Lysine. Supplemental administration of L-Lysine has been shown to reduce the severity and duration of feline herpes virus infections. Additionally, the routine administration has been shown to reduce the incidence of flare-ups.

Enisyl-F Lysine Treats from Vetoquinol are the perfect L-Lysine supplement for your feline friends!


Ingredients: Poultry meal, rice flour, L-lysine monohydrochloride, sugar, salt, potassium sorbate, titanium dioxide.

Useful Information

Directions for use: For routine administration: Give 5 treats a day - supplies 250mg. L-Lysine. For flare-ups(active infection): Cats may receive up to 10 treats per day.

Guaranteed Analysis:
Crude Protein (Min.) 30%
Crude Fat (Min.) 4%
Crude Fiber (Max.) 1%
Moisture (Max.) 15%
Ash (Max.) 8%
L-Lysine Monohydrochloride 250 mg
* For use in cats only.

Warnings: For animal use only. Keep out of reach of children and other animals. In case of accidental overdose, contact a health professional immediately.

Customer Reviews

218 Reviews
76% (165)
12% (27)
4% (9)
3% (6)
5% (11)
92% Recommend this product (200 of 218 responses)
By Nickname
April 18, 2018
Actual product different than description
The product I received is great, a tasty treat with added immune benefits... However, its not the product pictured here. The website clearly says "Lysine Treats" but the package I received says "Lysine Bites" .... Even the list of ingedients is different. Idk if the manufacturer has changed the product or if Entirely Pets has confused 2 different products.
By Peaches
Denver, Colorado
August 27, 2017
Very good
Have been using this for a couple of years. My cats like these and it keeps there feline herpes at bay.
By compbeney
Boca Raton, FL
February 14, 2017
Great for an outbreak
Quickly clears up crusty eyes, sneezing!
By Chrissy
January 16, 2017
Very sad!
Product has changed and my poor kitty that loved and needs this will not eat them! Have to search for a new one.
By cp
January 3, 2017
Review for Enisyl-F Lysine Treats (6.35 oz)
I have two cats and neither one liked the smell well enough to even taste them. A waste of money.
By Stephie
July 31, 2016
Great product
Hello, my two garage kitties have been on these for a while, they love them and come running for their special treats. Than you entirely pets!
By ljanelle
July 17, 2016
Ebi loves these!
I first purchased some lysine treats at the pet store. Ebi would not eat them. They were a lot less expensive but she would not have anything to do with them. I gave her the Enisiyl-F Lysine treats and she really enjoyed them! She has kitty herpes so I hope this helps her not to have repeat outbreaks. She stopped sneezing and having her eye drip, so they seem to be working. Yay!
By cat l.
July 4, 2016
Lysine-f treats
My cat easily eats these treats. My only concerns are: there is no calorie content included in the information re the product and that the treat sizes are not consistent, leaving smaller mm sizes at the bottom of the package.
By cats m.
July 1, 2016
Excellent product
We originally started using these treats at the recommendation of our vet for one of our cats who had the herpes virus and suffered from respiratory problems. It eased those symptoms and was accepted readily in her food. After that cat passed away unexpectedly from other problems, we noticed some sneezing and respiratory indicators occurring intermittently in our other four cats. This wasn't surprising, as they all shared the same food and water bowls and all had the same mother (the problem could have been genetically transferred). Since then we've given all four of the cats the treats on a daily basis and it has definitely alleviated or lessened most of the respiratory issues. As an added plus, all the cats love the taste and will take them as stand-alone treats if we increase the dosage when symptoms are noted.
By Linzy33
April 21, 2016
Great Product
My cat was diagnosed with feline AIDS 10 months ago. My Vet recommended Enisyl-F Lysine Treats as a supplement. She has responded very well. The cost through Entirely Pets is 1/3 less than what I was paying at my Vet's office. I highly recommend this product for feline AIDS.
By Brangelina
March 31, 2016
Enisyl treats
I have been giving my cat Enysil treats for a few years and it seems to be curbing the number of episodes of ocular herpes flare ups. Plus my kitty loves them. My recent delivery of treats was not received because the mailing envelope was severely damaged and the contents were missing. I phoned Entirelypets and explained what happened and they shipped another order out immediately. They obviously know what good customer service is all about.
By gizmo
March 18, 2016
not soft
i had bought these before and they were a lot softer. the ones I got now are hard and my cat doesn't like them like he liked the soft ones
By Rose
San Francisco Bay Area, CA
March 14, 2016
Enisyl-F Lysine Treats
I give my cat 6 pieces every day. Since I began about 1 and 1/2 yrs ago, her flare-ups have significantly decreased. She looks for them every day. Great find, especially for a picky princess who does not get excited over most food or treats.
By Mrscee
February 15, 2016
This works!
My cat was constantly getting eye infections. Since I started giving him the Lysine treats (which he likes!!!), he only gets the problem one or two times a year and not nearly as severe, thus I am not constantly taking him to the vets for prescription eye drops$$$.
By Lisa
February 7, 2016
Product Changed Again
I have several cats that use Lysine to combat their herpes symptoms. They don't like any other brand lysine treat, so I've had them on the Enisyl-F Lysine Treats from Vetoquinol for many years. This is the 4th change in the treats from this company. My cats loved the first and third version. They think the current (4th version) is okay. They eat a few nuggets and then are not interested anymore. Getting them to eat 6 treats twice a day is impossible. I was glad to read reviews from other people before I tried the new version. Normally I purchase several bags at a time but this time I only bought one bag. Because I have multiple cats, the treats make it easy to make sure each one is getting the correct dosage. Since my cats do not like this product any longer, I will go back to the powdered Lysine. It's more work since I will have to feed each cat separatly but on the bright side, it's less expensive. If your cat likes the taste of the treat - it's a great product.
Winterset, IA
January 12, 2016
My cats won't eat now! I understand the formula has not changed, but from one bag to the nest they won't eat it! My one cat really needs it and I don't know what to get it now!!!
By Daisy G.
January 7, 2016
What Happened to the Formula???
My kitties always loved this brand of Lysine "treats".I even had them on auto-ship.Then one day they arrived in new packaging and along with it,I think a new formula.The newer "treats" are as hard as rocks,and for one of my smaller cats I like to break them up into even smaller pieces and can't at all with these..I personally thought they were stale,so I opened another package and same thing..just as hard...Only one of my cats will still eat them,but then again he would eat just about anything to be honest. :D I will not be buying this brand anymore..
By Sandy
December 23, 2015
Great alternative to the Enisyl-F paste
One of my cats has a sensative stomach. He will sometimes throw up the paste. The chews are a great alternative that he really likes. He will follow me around trying to get me to give him more of his "treats." The chews seem to work as well as the paste in controlling his symptoms.
By Big T.
November 9, 2015
Healthy Cats
Helped stave off fungal dermatitis in 5 kittens and a mamma cat in conjunctions with disinfecting wipes to treat spots.
By Elaine
New Hartford, NY
November 6, 2015
Wonderful cat treats!
My cat loves these treats and looks forward to them at the end of each day.
By Suzy
Houston TX
November 3, 2015
Not really treats
One of my cats refuses to eat these while the other one occasionally will eat them. At first he seemed to really like them. So I'm not sure how good they taste! But I will keep trying as my vet recommended them.
By Helen
October 24, 2015
Cat no longer eating the lysine
It worked outstandingly for many months but she has refused to eat the lysine from the last two bags I have purchased. My male cat who is on it has not cared and eats them still. I also remember a white version as well as a darker version and wondered what happened to the white version. I had purchased them at the vet. I am anxious to get this straightened out as she has symptoms again.
By Elllie
October 16, 2015
Treat form is great!
Was thrilled when I found the product in treat format instead of gooey very expensive can sold by a vet and had to be mixed with wet food. My cat will run from any place in the house when I tell her it's time for her "meds".

My only problem is that the bags don't close correctly and treats will dry out if I don't move them to a zip lock that will keep them fresh.
By Kittysm
October 14, 2015
Did the formula change?
My cats have loved these for years. When the new package arrived, the treats looked different and my cats won't touch them. What happened?
By tr70
St. Louis
October 13, 2015
Kitty won't eat anymore
I'm not sure why the company can't get the flavor right but kitty really has started to snub her nose at these. She really needs them so I don't know what to do...please make them tasty.
October 2, 2015
Enisyl-F Lysine Treats
My cats are so picky I have had to hide the treats in their food and even then they sometimes just eat around them. This product does seem to be helping with their fur after they got into some major fleas outside. I've hd to dose them twice with Advantage II and powder them with diatomaceous earth "BIO-D" to bring the flea problem under control not to mention spraying my yard.
By normaean1213
Richmond, Virginia
June 1, 2015
Great Price
The vet prescribed Enisyl-F Lysine for my cats. Their price was $30.00 a bag, Entirely pets price was Half that ! Way to go ! My cats get what they need and I get a price break
By Jelly
St.t Petersburg, Florida
May 21, 2015
Lysine treats
Jelly, my cat, loves this med, she thinks they are treats and it makes it so easy to give her med to her.
Tampa, Florida
May 11, 2015
Lysine treats - feline
Excellent product. I give it to both of my kitties daily (who have immune problems) and it keeps them from sneezing.
Nashville, TN
April 24, 2015
Just what I ordered!
I was much less expensive here than at the vets and kitty loves them.

Questions and Answers

3 Questions & 1 Answer
from Eugene, OR asked:
September 29, 2015
How many treats are in the 6.35 oz bag? Thanks, Joan

from Southern Illinois asked:
August 11, 2015
how many treats in Enisyl-F Treasts (6.35oz)

from belgrade, ME asked:
July 12, 2015
Any deal if you buy several as there is with the fortiflora? Thanks
1 Answer
Not for the treats unfortunately, but there is a deal for 3-packs and 6-packs of the paste. You can also get a 10% discount through the Autoship program. http://www.entirelypets.com/3pkenisyl.html http://www.entirelypets.com/6pkenisyl.html
Submitted by: Customer Service on July 15, 2015

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