Felisyl® is a supplement that contains the amino acid L-Lysine for use in cats and kittens for conditions responsive to L-Lysine. L-Lysine is an essential amino acid, which means that your cat's body needs it, but can't produce it, so this supplement is a perfect choice to provide that necessity.
L-Lysine HCL Immune System Support for Cats helps keep your cat healthy by supporting the immune system naturally so that it can function normally and produce antibodies. Felisyl L-Lysine HCL Immune System Support for Cats also helps maintain healthy tissue, supports respiratory health, and may even help with your cat's vision. The L-Lysine is in palatable poultry, and the flavored fish base was making these granules easy to give to your cat, sprinkle over or mix with food.
Immune Support for Cats
Fuel your pet with the supplements they need to remain healthy and boost their immune system with cat health supplements that add much-needed nutrients and amino acids to continue being active.
L-Lysine
L-Lysine is an essential amino acid that your pet?s body doesn?t produce, so this supplement is the perfect aid that helps support your pet?s immune system so that it can function normally and produce antibodies. L-Lysine also helps maintain healthy tissue supports respiratory health.
Pet Health Supplement
A healthy immune system and eye health are essential for cats of any age. Ensure your furry friend remains active with healthy vision with these pet health supplements that help support normal inflammatory response and help support cat-eye health.
Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
Compare to:$13.99
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Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
Felisyl® is a supplement that contains the amino acid L-Lysine for use in cats and kittens for conditions responsive to L-Lysine. L-Lysine is an essential amino acid, which means that your cat's body needs it, but can't produce it, so this supplement is a perfect choice to provide that necessity.
L-Lysine HCL Immune System Support for Cats helps keep your cat healthy by supporting the immune system naturally so that it can function normally and produce antibodies. Felisyl L-Lysine HCL Immune System Support for Cats also helps maintain healthy tissue, supports respiratory health, and may even help with your cat's vision. The L-Lysine is in palatable poultry, and the flavored fish base was making these granules easy to give to your cat, sprinkle over or mix with food.
Immune Support for Cats
Fuel your pet with the supplements they need to remain healthy and boost their immune system with cat health supplements that add much-needed nutrients and amino acids to continue being active.
L-Lysine
L-Lysine is an essential amino acid that your pet?s body doesn?t produce, so this supplement is the perfect aid that helps support your pet?s immune system so that it can function normally and produce antibodies. L-Lysine also helps maintain healthy tissue supports respiratory health.
Pet Health Supplement
A healthy immune system and eye health are essential for cats of any age. Ensure your furry friend remains active with healthy vision with these pet health supplements that help support normal inflammatory response and help support cat-eye health.
Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
Compare to:$38.99
Price too low to show
Add to cart to see low price
Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
Felisyl® is a supplement that contains the amino acid L-Lysine for use in cats and kittens for conditions responsive to L-Lysine. L-Lysine is an essential amino acid, which means that your cat's body needs it, but can't produce it, so this supplement is a perfect choice to provide that necessity.
L-Lysine HCL Immune System Support for Cats helps keep your cat healthy by supporting the immune system naturally so that it can function normally and produce antibodies. Felisyl L-Lysine HCL Immune System Support for Cats also helps maintain healthy tissue, supports respiratory health, and may even help with your cat's vision. The L-Lysine is in palatable poultry, and the flavored fish base was making these granules easy to give to your cat, sprinkle over or mix with food.
Immune Support for Cats
Fuel your pet with the supplements they need to remain healthy and boost their immune system with cat health supplements that add much-needed nutrients and amino acids to continue being active.
L-Lysine
L-Lysine is an essential amino acid that your pet?s body doesn?t produce, so this supplement is the perfect aid that helps support your pet?s immune system so that it can function normally and produce antibodies. L-Lysine also helps maintain healthy tissue supports respiratory health.
Pet Health Supplement
A healthy immune system and eye health are essential for cats of any age. Ensure your furry friend remains active with healthy vision with these pet health supplements that help support normal inflammatory response and help support cat-eye health.
Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
Compare to:$75.99
Price too low to show
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Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
Felisyl® is a soft chew supplement that contains the amino acid L-Lysine for use in cats and kittens for conditions responsive to L-Lysine. L-Lysine is an essential amino acid, which means that your pet's body needs it, but can't produce it, so this supplement is a perfect choice to provide that necessity.
L-Lysine HCL Immune System Support for Cats helps keep your cat healthy by supporting the immune system naturally so that it can function normally and produce antibodies. Felisyl L-Lysine HCL Immune System Support Soft Chews for Cats also helps maintain healthy tissue, supports respiratory health, and may even help with your cat's vision. The L-Lysine is in a chicken liver flavored soft chew making it easy to give to your cat.
For Use In: Cats
Immune Support for Cats
Fuel your pet with the supplements they need to remain healthy and boost their immune system with cat health supplements that add much-needed nutrients and amino acids to continue being active.
L-Lysine
L-Lysine is an essential amino acid that your pet?s body doesn?t produce, so this supplement is the perfect aid that helps support your pet?s immune system so that it can function normally and produce antibodies. L-Lysine also helps maintain healthy tissue supports respiratory health.
Pet Health Supplement
A healthy immune system and eye health are essential for cats of any age. Ensure your furry friend remains active with healthy vision with these pet health supplements that help support normal inflammatory response and help support cat-eye health.
Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
Compare to:$19.99
Price too low to show
Add to cart to see low price
Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
Felisyl® is a soft chew supplement that contains the amino acid L-Lysine for use in cats and kittens for conditions responsive to L-Lysine. L-Lysine is an essential amino acid, which means that your pet's body needs it, but can't produce it, so this supplement is a perfect choice to provide that necessity.
L-Lysine HCL Immune System Support for Cats helps keep your cat healthy by supporting the immune system naturally so that it can function normally and produce antibodies. Felisyl L-Lysine HCL Immune System Support Soft Chews for Cats also helps maintain healthy tissue, supports respiratory health, and may even help with your cat's vision. The L-Lysine is in a chicken liver flavored soft chew making it easy to give to your cat.
For Use In: Cats
Immune Support for Cats
Fuel your pet with the supplements they need to remain healthy and boost their immune system with cat health supplements that add much-needed nutrients and amino acids to continue being active.
L-Lysine
L-Lysine is an essential amino acid that your pet?s body doesn?t produce, so this supplement is the perfect aid that helps support your pet?s immune system so that it can function normally and produce antibodies. L-Lysine also helps maintain healthy tissue supports respiratory health.
Pet Health Supplement
A healthy immune system and eye health are essential for cats of any age. Ensure your furry friend remains active with healthy vision with these pet health supplements that help support normal inflammatory response and help support cat-eye health.
Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
Compare to:$44.99
Price too low to show
Add to cart to see low price
Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
Felisyl® is a soft chew supplement that contains the amino acid L-Lysine for use in cats and kittens for conditions responsive to L-Lysine. L-Lysine is an essential amino acid, which means that your pet's body needs it, but can't produce it, so this supplement is a perfect choice to provide that necessity.
L-Lysine HCL Immune System Support for Cats helps keep your cat healthy by supporting the immune system naturally so that it can function normally and produce antibodies. Felisyl L-Lysine HCL Immune System Support Soft Chews for Cats also helps maintain healthy tissue, supports respiratory health, and may even help with your cat's vision. The L-Lysine is in a chicken liver flavored soft chew making it easy to give to your cat.
For Use In: Cats
Immune Support for Cats
Fuel your pet with the supplements they need to remain healthy and boost their immune system with cat health supplements that add much-needed nutrients and amino acids to continue being active.
L-Lysine
L-Lysine is an essential amino acid that your pet?s body doesn?t produce, so this supplement is the perfect aid that helps support your pet?s immune system so that it can function normally and produce antibodies. L-Lysine also helps maintain healthy tissue supports respiratory health.
Pet Health Supplement
A healthy immune system and eye health are essential for cats of any age. Ensure your furry friend remains active with healthy vision with these pet health supplements that help support normal inflammatory response and help support cat-eye health.
Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
Compare to:$87.99
Price too low to show
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Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
This veterinarian formulated L-Lysine gel is recommended to help the immune system with amino acid support in a salmon flavor cats love. Felisyl® also helps support respiratory health and maintain normal eye function and health. With 500 mg of L-Lysine per ½ teaspoon.
For Use In: Cats
Immune Support for Cats
Fuel your pet with the supplements they need to remain healthy and boost their immune system with cat health supplements that add much-needed nutrients and amino acids to continue being active.
L-Lysine
L-Lysine is an essential amino acid that your pet?s body doesn?t produce, so this supplement is the perfect aid that helps support your pet?s immune system so that it can function normally and produce antibodies. L-Lysine also helps maintain healthy tissue supports respiratory health.
Pet Health Supplement
A healthy immune system and eye health are essential for cats of any age. Ensure your furry friend remains active with healthy vision with these pet health supplements that help support normal inflammatory response and help support cat-eye health.
Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
Compare to:$14.99
Price too low to show
Add to cart to see low price
Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
This veterinarian formulated L-Lysine gel is recommended to help the immune system with amino acid support in a salmon flavor cats love. Felisyl® also helps support respiratory health and maintain normal eye function and health. With 500 mg of L-Lysine per ½ teaspoon.
For Use In: Cats
Immune Support for Cats
Fuel your pet with the supplements they need to remain healthy and boost their immune system with cat health supplements that add much-needed nutrients and amino acids to continue being active.
L-Lysine
L-Lysine is an essential amino acid that your pet?s body doesn?t produce, so this supplement is the perfect aid that helps support your pet?s immune system so that it can function normally and produce antibodies. L-Lysine also helps maintain healthy tissue supports respiratory health.
Pet Health Supplement
A healthy immune system and eye health are essential for cats of any age. Ensure your furry friend remains active with healthy vision with these pet health supplements that help support normal inflammatory response and help support cat-eye health.
Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
Compare to:$48.99
Price too low to show
Add to cart to see low price
Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
This veterinarian formulated L-Lysine gel is recommended to help the immune system with amino acid support in a salmon flavor cats love. Felisyl® also helps support respiratory health and maintain normal eye function and health. With 500 mg of L-Lysine per ½ teaspoon.
For Use In: Cats
Immune Support for Cats
Fuel your pet with the supplements they need to remain healthy and boost their immune system with cat health supplements that add much-needed nutrients and amino acids to continue being active.
L-Lysine
L-Lysine is an essential amino acid that your pet?s body doesn?t produce, so this supplement is the perfect aid that helps support your pet?s immune system so that it can function normally and produce antibodies. L-Lysine also helps maintain healthy tissue supports respiratory health.
Pet Health Supplement
A healthy immune system and eye health are essential for cats of any age. Ensure your furry friend remains active with healthy vision with these pet health supplements that help support normal inflammatory response and help support cat-eye health.
Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
Compare to:$94.99
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Note: Short Dated Sale! Product is Best Used By 11/21. All Sales Are Final. Buy 3 6oz Bags with Discount Automatically Applied at Checkout.
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
This veterinarian formulated L-Lysine gel is recommended to help the immune system with amino acid support in a salmon flavor cats love. Felisyl® also helps support respiratory health and maintain normal eye function and health. With 500 mg of L-Lysine per ½ teaspoon.
For Use In: Cats
Immune Support for Cats
Fuel your pet with the supplements they need to remain healthy and boost their immune system with cat health supplements that add much-needed nutrients and amino acids to continue being active.
L-Lysine
L-Lysine is an essential amino acid that your pet?s body doesn?t produce, so this supplement is the perfect aid that helps support your pet?s immune system so that it can function normally and produce antibodies. L-Lysine also helps maintain healthy tissue supports respiratory health.
Pet Health Supplement
A healthy immune system and eye health are essential for cats of any age. Ensure your furry friend remains active with healthy vision with these pet health supplements that help support normal inflammatory response and help support cat-eye health.
Ingredients
Guaranteed Analysis per teaspoon (6G):
All quantities are minimum unless stated otherwise.
Administer orally. Place a small amount on cat's nose to stimulate taste interest. Once interest has been established, a syringe or teaspoon may be used. Can also apply gel directly on cat's paw and allow cat to lick off.
• For Kittens under 6 month of age: ¼ teaspoon twice daily
• For Cats 6 months or older: ½ teaspoon twice daily
• Or use as directed by your veterinarian
Allow 3-4 weeks for best results. This product is intended for intermittent or supplemental feeding only. Individual results may vary. For animal use only. Do not use if product appears to be tampered with or seal is broken.
Storage: Store product in cool, dry place. Avoid temperatures above 86° F.
I have used this product on my 4 cats and their symptoms have been practically disappeared. They have not had any reoccurring bouts that have needed medications. Highly recommend
Easy to administer
Smell
By RW
Santa Fe, NM
Excellent for cats with FIV
September 21, 2017
A dime-sized serving of this gel twice a day helps keep my FIV+ cats healthy. In particular, it seems effective at keeping their otherwise-frequent eye infections at bay. I highly recommend this product.
By Phil
Good price but bad taste
July 23, 2017
The price is right, but whereas my cats LOVED the taste of felysil lysine, they absolutely hate the taste of this brand. All 4 of them strongly dislike it. They used to look forward to getting their doses of felyisil, but now they run away and I have to force them to take it :/
By Maiko95
Great product for a good price
April 22, 2017
I switched to this brand because of the price and it works just as well as the other brand and doesn't seem to smell as bad either
By Fafa
LAX
Great
December 27, 2015
My cat used to take L-Lysine tablet but as he is getting older, he was refused to take it. I give him the Felisyl L-lysine Gel, he is willing to take it and help him for cat flu.
I surely will keep buy this for him.
By Mbrown
Mexia, Al
Never again
June 1, 2015
My cat hated this stuff. Evidently the taste is awful. The ingredients are the same as the more expensive brand, but the flavor must be too strong. She will take the more expensive brand without a problem. I love the price, but as you probably know, my cat is in charge. I will be switching back to the other brand. I wish the more expensive brand was offered in a 3 or 6 pack, so maybe it would be little more affordable. I have 4 cats that need this supplement.
By Katlady
Alabama
Never Again ! ! ! !
April 10, 2015
I was using Viralys gel for my cat. Decided to try Felisyl because the ingredients are the same and it's much cheaper. BIG MISTAKE!!! I had no problem getting her to swallow Viralys, but she spits out the Felisyl. It must taste awful. It is much darker in color and very runny. I then have to wash her and myself. The Viralys is more of a gel and easier to manage. I will definitely go back to Viralys. I wish Viralys would be sold at a more compatible price. I really can't tell that either lysine brand is really helping her with her sinus problems due to the herpes virus.
By Pat
Better than chews
March 20, 2015
My cat rejected chews, even crumbled in her food. I tried them, they are bitter. The gel is sweet and she liked it okay. She would eat her food with it mixed in most of the time. But she was a little reluctant and looked questioningly at me. Powder, however, worked great for her. But I think the gel will work for most cats all the time.
By Kat
Florida
Value
March 7, 2015
Better value than Viralys for the exact same thing!
By popie
brookville,pa
WORKS FOR US
February 17, 2015
BOUGHT THIS FELISYL GEL RECENTLY SINCE THE PRICE WAS MUCH BETTER THAN THE LYSINE GEL WE HAD BEEN USING. WE HAVE A LOT OF CATS WHO REQUIRE LYSINE DAILY AND THE PRICE BREAK IS WELCOME. I GIVE THE GEL VIA SYRINGE,SO TASTE IS NOT AN ISSUE.IT SEEMS TO BE AS EFFECTIVE AS THE MORE EXPENSIVE ALTERNATIVE AND THAT IS THE BOTTOM LINE FOR ME.
By Spark
Clayton, NC
Easy
February 16, 2015
Use the L-lysine Gel to refill the "syringe". Hope it does the same excellent job the original L-lysine did.
By Shelly
Bakersfield,CA
better flavor please
January 22, 2015
I loved the dosage size but my cats do not like the flavor. 4 cats out of 4 say blaa! I haven't given up on them acquiring a taste for it but it is becoming a battle. It looks like I will have to mix it with food and that's no fun for me. Outside of that issue I would buy it again.
By Willie J.
Arkansas
Tastes Horrible
May 12, 2014
6 cats and not one nibble. Will go back to Viralys gel.
By bgfuqua
Seems to be as good as vet brand
February 24, 2014
Seems to work as well as vet's brand at lower cost.Easy to mix with food.
3-PACK Felisyl L-Lysine for Cats Immune System Support (180 Soft Chews)Reg price: $44.99
6-PACK Felisyl L-Lysine for Cats Immune System Support (360 Soft Chews)Reg price: $87.99
3-PACK Felisyl L-lysine Gel for Cats (15 oz)Reg price: $48.99
6-PACK Felisyl L-lysine Gel for Cats (30 oz)Reg price: $94.99