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:$16.99
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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
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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:$18.99
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
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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:$42.99
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:$83.99
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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.
$63.99
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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
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.
Ingredients
GUARANTEED ANALYSIS (Per 1cc Scoop)
L-Lysine HCI
250mg
Ingredients: L-Lysine in a palatable base
Useful Information
Approximately 250mg of L-Lysine per one rounded scoop (322mg)
Kittens under 6 months: ½ Scoop twice Daily
Cats older than 6 months: 1 scoop twice daily
Store in a cool, dry place, out of the reach of children. Keep tightly shut to preserve freshness.
Can't find this stuff any cheaper! It pays to buy in bulk. My cats haven't had any herpes issues since they started taking this
By Meezer3
Chicago, Il
Important for all cat owners to be aware
January 18, 2016
According to our Vet Ophthalmologist, 85 % of all cats are infected with the Herpes virus that can cause devastating effects to their eyes. Many only carry it and show no signs, while others actively break with the disease often while under stress. One of our cats is such a animal. Our Vet suggested we feed all our cats this supplement that can help their immune system keep the viruses growth in check and bolster their immune system. I have advised all my friends to use this powder in their cats food daily. I have owned Siamese cats for 42 years, and have been feeding this supplement for years now and I feel it helps them to stay healthy.
By Lynn
Love This Product
October 31, 2015
I have ordered the Felisyl many times, it truly makes a difference for cats with upper respiratory.
By iluvcats
Louisiana
Felisyl granules are the best
September 4, 2015
Felisyl granules are by far the best to use, in my opinion. It mixes well with wet food. The tiny granules are very palatable, unlike the paste that has a very strong seafood scent. I'm very pleased with this product and will continue buying it.
By Dixie S.
Felisyl
May 19, 2015
The cats took a bit of getting use to it after having Viralys for so long. It is not lasting quite as long as the Viralys, but cost wise it is much better. I will buy it again.
By peacherooo
Oriskany, NY
this works
May 2, 2015
I highly believe that this product helps my cats get over sneezy/watery eyes. I simply put a scoop into their canned food and they eat it right up. In less than a week they are back to normal.
By Blanca58
Houston, Tx
Felisyl
March 15, 2015
Just started using this, but my cat accepts it very well. I have been using another brand and will know better later if I see a difference in her well being.
By Frauline
NY
Wonderful Product, Good Value
February 28, 2015
I purchased two of the powder form Felisyl supplements for my Sabrina. At first I never even heard of this nutrient until my Sabrina had a second go around with an eye issue. This time our Vet diagnosed her with Feline Herpes. Being a fairly new cat parent I am learning lots about cats. I am very pleased with this powder and my Sabrina doesn't seem to mind the "taste or slight yeasty scent" at all. I just mix it around in her wet food and she's good to go! I will definitely be purchasing again from Entirely Pets. From the moment I placed my order, my order confirmation email came right through with tracking shortly thereafter.I literally had my order in two days - regular shipping (I'm from NY). Oh, BY THE WAY... I noticed in some earlier reviews BEFORE placing my order that for some reason customers weren't receiving the "tiny" measuring spoons in with the product. I guess I was lucky and did. However, upon testing the tiny measuring spoon given with the product, it's the exact same measurement as an 1/8 measurement spoon.
By I n.
North Carolina
Review for 6-PACK Felisyl Immune System Support Granules (21 oz)
June 16, 2013
Have used this before. It helps the immune system in kitties.
By Karen
Outer Banks, NC
My Cats Love This
April 1, 2013
I have several rescued cats that take l lysine. This is the one product that they all love, I can just sprinkle it on their food and down it goes. One kitty won't even eat unless her food has it! highly recommend
By Kat
Delmar MD
Felisyl Powder
December 20, 2012
I have four indoor kitties and we were constantly having upper respiratory infections. My vet suggested that I put them on Llysine to help with the symptoms. The cost was exorbitant to say the least. So I started looking around and found Entirely Pets.
Felisyl is the best supplement I have ever given my kitties. They get 500ml daily and love the flavor. I actually have a kitty that wants to eat it right out of the cannister.
Way to go Entirely for offering such great products!
By Rae
Memphis, TN
It really makes a difference!
April 27, 2011
My Siamese cat has a bad case of herpes, because she was left untreated for so long before she was adopted which means she will always show some symptoms no matter how good the medicine is. We tried other brands of lysine powder and pastes that cost more money than the Felisyl, such as Viralys. None of them made the difference that Felisyl made for our cat. She has less frequent eye watering and sneezing compared to the other brands. She seems happier and more full of life!
Felisyl Immune System Support Granules (3.5 oz)Reg price: $16.99
Felisyl Immune System Support Granules - 3-PACK (10.5 oz)Reg price: $38.99
Felisyl Immune System Support (60 Soft Chews)Reg price: $18.99
3-PACK Felisyl Immune System Support (180 Soft Chews)Reg price: $44.99