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Enisyl-F Oral Paste for Cats - 100 mL
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Enisyl-F Oral Paste for Cats - 100 mL

Item: IWM031913
Availability: In Stock
Was: $56.99$43.49You Save: $13.50!(24%)


This item is currently out of stock. We recommend trying Felisyl Immune System Support or 1 (800) 889-9475 for availability.


Once your cat becomes infected with the feline herpesvirus type 1 (FHV-1), he will be infected for the course of his life. You can, however, give care, treat symptoms, and limit the length of the outbreak. Symptoms include runny eyes and nose, sneezing, fever, a loss of appetite, and perhaps ulcers in the mouth or on the tongue. Kittens and older cats are most susceptible.

While there is no cure for the feline herpesvirus type 1 (FHV-1), it is good to know a product like Enisyl-F oral paste is available to minimize the effects. Enisyl-F for cats contains L-Lysine, an amino acid that helps subdue viral replication. It can reduce symptoms, shorten the time that your cat will have to suffer the symptoms, and reduce the frequency of the outbreaks.

Enisyl-F is a safe, affordable and palatable paste for your kitten or adult cat. Enisyl-F with L-Lysine comes in a unique pump that makes it simpler to administer. When your cat shows the upper respiratory signs of a herpes virus outbreak, it is good to know there is an effective product to minimize the effects. Enisyl-F Oral Paste for Cats with L-Lysine is here to help.

  • Highly palatable base
  • Safe, easy-to-administer and affordable
  • Suitable for kittens and adult cats


Ingredients: Purified water, L-Lysine HCI, sorbitol, cod liver oil, xanthan gum, tuna flavor, soy lecithin, silica aerogel, caramel color, potassium sorbate, sodium benzoate.

Active Ingredients per 1 mL pump (1 gram):
L-Lysine Hydrochloride 250 mg

Useful Information

Administration: Adult cats: 1 to 2 mL twice a day

Kittens: 1 mL twice a day, or as recommended by your veterinarian.

Each pressure represents 1 mL of Enisyl-F paste. Enisyl-F is extremely tasty and is easily accepted by most cats. It can be applied directly in the mouth, on the nose or on the paw where it can be licked off. Alternatively, you may add the product to your cat's food, if more convenient.

Cautions: Safe use in pregnant animals or animals intended for breeding has not been proven. If animal's condition worsens or does not improve, stop product administration and consult your veterinarian.


Customer Reviews

Review Summary
14 Reviews
93% (13)
0% (0)
7% (1)
0% (0)
0% (0)
71% Recommend this product (10 of 14 responses)
By Judy
Davis ca
Excellent for his eyes
August 17, 2016
Prompt and excellent!!
By Katrina
March 31, 2016
Really helps with herpes flare ups.
By Vickie
Ellensburg, Washington
This is a wonderful product that I couldn't do without here in my sanctuary.
March 24, 2016
Thank you, Healthy Pets, for your wonderful products and fast response. I will be a continuing customer.
I refer this product to all cat owners....the lysine is protection from the herpes afflictions so many kitties suffer from. I also use it for kitties with mouth problems such as gingivitis/stomatitis.
By Pamela
Winnsboro, TX
Enisyl- F Oral Paste for Cats is an excellent product!
March 19, 2016
I have used this product for my cats that range in age of 7 mos-12 yrs old and they are in great health, I add this to their daily diet of Royal Canin and I see improvements in their overall health- I know it is used for kitty colds and to keep their immune systems up and I have used this product for over a year and am glad to be ordering this from Healthy Pets which makes my order easy and allow me to use paypal so all around awsome!
used to keep immune system up for one cat or several cats. I use a small syringe that fits inside the pump and extract the paste and feed to each cat by mouth. I wish all pet shelters and rescues could have this product I know it might be expensive but it would improve the stress level and health of the cats in shelters!
By Jorge
Madrid, Spain
Herpes virus cats
March 13, 2016
The cat herpes virus cannot be cured, only palliative care can be applied. Lysine is the most widely used, and in particular the enysil is one of the best products, easy application and acceptable by the animal
Easy administration, palatable The price for a permanent treatment
By Susan
New York
My cat wont eat without it
February 5, 2016
As a kitten my cat was diagnosed with a viral eye infection and I was told to feed her this to boost her immunity. She has been eating it ever since, about 5 years now, two times a day, and has never had another eye infection.
By Jorge
Madrid , Spain
Excelent product
April 9, 2015
I have two cats with herpesvirus , Enisyl is for me the best way to give them the lisne that need to maintain the virus controlled
Easy administration and palatable enough
By Renee
Port Jefferson Station, New York
Eats it Up in his Food
October 24, 2013
I was buying the powder one but then my "feral" would stop eating for a day or so. So I figured maybe it was upsetting his stomach. So I switched to the oral paste. And it works out so much better. He hasn't skipped a meal since I started it.
Easy to give in food None
By Donna
East Haven,CT
May 16, 2013
My poor cat has stomatitis which is a very painful, oral illness. I was bringing him every 4-6 weeks for antibiotics and a shot of steroids. I didn't want to keep giving him steroids and a friend of mine who rescues cats suggested this Enisyl and mailed me a tube. Well, after the VERY FIRST dose, my cat was eating better, feeling better and in much better condition. Before the Enisyl-F I thought I was going to lose him; he was that bad. And, it isn't difficult to administer either. He's an old man but doing great now. lol I HIGHLY recommend this product. It's wonderful.
Fast Acting Easy to Administer ABSOLUTELY NONE!!
By Coreen M.
Excellent results
December 9, 2012
My kitty caught herpes in the shelter prior to our adopting her. Her eyes drained and the inner corners became red and raw. One vet prescribed antibiotic ointment, but her eyes got worse due to the antibiotic irritation. Since herpes is a virus the antibiotics were ineffective anyway. A friend told me about Enisyl-F Paste and within a few weeks her eyes improved dramatically. Once her eyes were clear, I stopped. I have not given her any for the past 3 months. Now I notice they are starting to drain and get red again, so I started the Enisyl-F Paste again and anticipate the same positive results. It's easy to administer and she loves the taste--an excellent product.
By Deborah D.
Great Stuff
August 5, 2010
My cats love this stuff and lick it up like candy. The pump is so easy to use and it helps keep their herpes virus from flair ups.
By Donna
May 25, 2010
I have been giving this paste to my cat for 4+ years now. She lost an eye when she was a baby and my vet. recommended Enisyl-F because the risk of infection. She loves it. It really helps. Before she was taking this her eye would \"LEAK\" every once it while. This stuff is wonderful.
By Harry O.
Gret product, poor packaging
March 26, 2010
For years I\'ve used Viralys with a monoject syringe to accurately dispense 250 mg twice daily of lysine orally to my cat who suffers from feline herpes. The oral administration can be a little stressful for the cat so when I found the Enisyl-f \'treats\' it was great. A meaured amount per treat and my cat loves them... However, the bag packaging is extremely poor as it allows the treats to be crushed and therefore the whole idea and accuracy of a measured amount of lysine is gone and you\'re either wasting money or hurting your cat.
By Ida
Great product!
August 3, 2008
Excellent product! Controls the sneezing!

Customer Q&A