Hero image 0 of Felisyl L-Lysine Gel for Cats – Boost Immunity & Support Healthy Tissue, Vision & Respiration - Salmon Flavor, Made in the USA - 5 oz, 0 of 7
Felisyl L-Lysine Gel for Cats – Boost Immunity & Support Healthy Tissue, Vision & Respiration - Salmon Flavor, Made in the USA - 5 oz
Key item features
- Immune System Support – Packed with L-Lysine (an essential amino acid) to bolster your cat’s immune defenses. A stronger immune system helps keep your kitty healthier and more resistant to common feline illnesses, giving them the best chance at a long, happy life.
- Respiratory & Eye Health – Formulated to support clear breathing and overall wellness in cats. Felisyl’s immune-boosting action helps ease sneezing, runny nose, and watery eyes associated with common respiratory issues, so your cat can breathe easy and stay comfortable every day.
- Tasty, Easy-to-Give Gel – Highly palatable salmon-flavored gel that cats love, making supplement time feel like a treat. No more struggles with pills – simply place the gel on your cat’s paw or nose and they’ll lick it off willingly, ensuring stress-free daily dosing.
- Vet-Formulated & Trusted – Developed by veterinarians for optimal feline health benefits. Felisyl is also vet-recommended, trusted by vets for its proven benefits and positive impact on cats’ lives. Pet parents can feel confident knowing this immune support gel is backed by experts and real results.
- NASC Certified Quality, – Manufactured to the highest quality and safety standards set by the National Animal Supplement Council. Felisyl carries the NASC Quality Seal and is proudly , so you can trust you’re giving your cat a safe, premium-grade supplement for their well-being.
Specs
- Animal typeCat
- Animal supplement & vitamin typeDietary Supplement
- FlavorMaple
- FeaturesChewable
- Rec. useVeterinary
- Size5 oz
Current price is USD$18.993.7 ¢/ea
Price when purchased online
Free 90-day returns
Subscribe, Your usuals, on your schedule, Save time and stay stocked!, $18.99
Subscribe
$18.99
Your usuals, on your schedule
Save time and stay stocked!
One-time purchase $18.99
One-time purchase
$18.99
How do you want your item?
Plus, get 50% off an annual plan at checkout!
Ships to
Arrives by Tue, Jul 7
.Order within 7 hr 8 min
Sold by HealthyPets
Fulfilled by Walmart
4.391304347826087 stars out of 5, based on 23 seller reviews(4.4)23 seller reviews
Free 90-day returns
Hurry —get 50% off a year of Walmart+
Exclusions, T&C apply. Ends 7/5. Claim offer
About this item
Product details
Immune Health Boost: Empower your cat's immune system to fend off threats and maintain peak health. By strengthening their natural defenses, you're investing in their long and joyful life. Enhanced Respiratory Function: Breathe easy knowing your cat's respiratory system is supported for optimal well-being. Whether they're exploring indoors or embracing outdoor adventures, healthy breathing is vital. Essential Amino Acid: L-Lysine, a crucial building block, ensures your cat's vitality from the inside out. It's the cornerstone of their well-being, promoting overall health and resilience. Easy-to-Administer Gel: Hassle-free application that your cat won't resist, making wellness routines a breeze. No more struggle or stress during supplementation – just a happy and contented feline friend. Premium Quality: Crafted with care, our gel is a testament to the highest standards of quality and efficacy. Your cat deserves nothing but the best, and Felisyl L-Lysine Gel delivers just that. Vet-Recommended Formula: Trusted by veterinarians for its proven benefits and positive impact on cats' lives. When you choose Felisyl, you're choosing a formula endorsed by those who prioritize feline health. Happy and Healthy Cats: Witness the transformation as your beloved feline friend experiences newfound energy and joy. A healthy cat is a happy cat, and Felisyl L-Lysine Gel ensures plenty of both.
- Immune System Support – Packed with L-Lysine (an essential amino acid) to bolster your cat’s immune defenses. A stronger immune system helps keep your kitty healthier and more resistant to common feline illnesses, giving them the best chance at a long, happy life.
- Respiratory & Eye Health – Formulated to support clear breathing and overall wellness in cats. Felisyl’s immune-boosting action helps ease sneezing, runny nose, and watery eyes associated with common respiratory issues, so your cat can breathe easy and stay comfortable every day.
- Tasty, Easy-to-Give Gel – Highly palatable salmon-flavored gel that cats love, making supplement time feel like a treat. No more struggles with pills – simply place the gel on your cat’s paw or nose and they’ll lick it off willingly, ensuring stress-free daily dosing.
- Vet-Formulated & Trusted – Developed by veterinarians for optimal feline health benefits. Felisyl is also vet-recommended, trusted by vets for its proven benefits and positive impact on cats’ lives. Pet parents can feel confident knowing this immune support gel is backed by experts and real results.
- NASC Certified Quality, – Manufactured to the highest quality and safety standards set by the National Animal Supplement Council. Felisyl carries the NASC Quality Seal and is proudly , so you can trust you’re giving your cat a safe, premium-grade supplement for their well-being.
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Brand
Felisyl
Animal type
Cat
Animal supplement & vitamin type
Dietary Supplement
Animal health concern
Immune Support
Indications
Animal Health Concern
Immune Support
Directions
Dosage
5 oz
Instructions
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 is 1/4 teasppon twice daily, For Cats 6 months or older is 1/2 teaspoon twice daily, Or use as directed by your veterinarian.
Warranty
Warranty information
N/A
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Similar items you might like
Based on what customers bought
PetAg Cat High Calorie Cat Gel 3.5 oz $11.73 $3.35/oz
Sponsored$1173current price $11.73$3.35/ozPetAg Cat High Calorie Cat Gel 3.5 oz
1024.2 out of 5 Stars. 102 reviewsSave with
Shipping, arrives in 2 daysBestLife4Pets Breathe Easy - Kennel Cough & Respiratory Support Supplement for Dogs - Dog Nasal Congestion Relief - 400 Pills $38.99
Sponsored$3899current price $38.99BestLife4Pets Breathe Easy - Kennel Cough & Respiratory Support Supplement for Dogs - Dog Nasal Congestion Relief - 400 Pills
2504.5 out of 5 Stars. 250 reviewsSave withShipping, arrives in 2 daysVetoquinol Viralys Gel L-Lysine Supplement for Cats, 5oz - Cats & Kittens of All Ages - Immune Health - Sneezing, Runny Nose, Squinting, Watery Eyes - Palatable Maple Flavor Lysine Gel $25.98 $5.20/oz
$2598current price $25.98$5.20/ozVetoquinol Viralys Gel L-Lysine Supplement for Cats, 5oz - Cats & Kittens of All Ages - Immune Health - Sneezing, Runny Nose, Squinting, Watery Eyes - Palatable Maple Flavor Lysine Gel
1164.5 out of 5 Stars. 116 reviewsTomlyn Immune Support L-Lysine for Cats, 5oz $23.97 $4.79/oz
$2397current price $23.97$4.79/ozTomlyn Immune Support L-Lysine for Cats, 5oz
1024.3 out of 5 Stars. 102 reviewsPlaqueOff for Cats 40g - Special Feline Formulation $15.85 39.6 ¢/g
$1585current price $15.8539.6 ¢/gPlaqueOff for Cats 40g - Special Feline Formulation
2424.4 out of 5 Stars. 242 reviewsZesty Paws 8-in-1 Multivitamin Mousse Chicken Flavor Cat Supplement, 14 Count $16.47
$1647current price $16.47Zesty Paws 8-in-1 Multivitamin Mousse Chicken Flavor Cat Supplement, 14 Count
2804.3 out of 5 Stars. 280 reviewsL-Lysine Supplement for Cats 900mg/scoop - Cat Supplement for Sneezing and Runny Nose, Cat Cold, Cat Immune Support, Eye Function, and Respiratory Health – Lysine Powder for Cat 4.23oz $22.99
Sponsored$2299current price $22.99L-Lysine Supplement for Cats 900mg/scoop - Cat Supplement for Sneezing and Runny Nose, Cat Cold, Cat Immune Support, Eye Function, and Respiratory Health – Lysine Powder for Cat 4.23oz
704.5 out of 5 Stars. 70 reviewsSave withShipping, arrives in 2 daysCoco and Luna Probiotics for Cats 120g Powder - Digestive Enzymes, Cat Probiotics and Digestive Enzymes, Cat Probiotics Powder, Promotes Healthy Stomach and Digestion (for Cats) $26.99
Sponsored$2699current price $26.99Coco and Luna Probiotics for Cats 120g Powder - Digestive Enzymes, Cat Probiotics and Digestive Enzymes, Cat Probiotics Powder, Promotes Healthy Stomach and Digestion (for Cats)
34.3 out of 5 Stars. 3 reviewsSave withShipping, arrives in 2 daysPet-Ag Cat-Sip Real Milk Treat - 8 oz $10.62
$1062current price $10.62Pet-Ag Cat-Sip Real Milk Treat - 8 oz
74.3 out of 5 Stars. 7 reviewsRx Vitamins Essentials for Cats - Daily Immune Support and Overall Health - Featuring Taurine, Vitamin B12, & Milk Thistle -Cat Multivitamin and Multimineral Powder with Spirulina and Vitamin B $18.39
$1839current price $18.39Rx Vitamins Essentials for Cats - Daily Immune Support and Overall Health - Featuring Taurine, Vitamin B12, & Milk Thistle -Cat Multivitamin and Multimineral Powder with Spirulina and Vitamin B
64.7 out of 5 Stars. 6 reviewsReady Cal PLUS Electrolytes for Cats $21.99
$2199current price $21.99Ready Cal PLUS Electrolytes for Cats
15 out of 5 Stars. 1 reviewsOimmal 15 in 1 Multivitamin for Cats | Natural Glucosamine, Liquid Multivitamin Blend for Cat Joint, Gut & Immune Health - 2 fl oz $12.99
2 optionsAvailable in additional 2 options$1299current price $12.99Oimmal 15 in 1 Multivitamin for Cats | Natural Glucosamine, Liquid Multivitamin Blend for Cat Joint, Gut & Immune Health - 2 fl oz
1014.6 out of 5 Stars. 101 reviewsCoco and Luna Multivitamin for Cats - Daily Support - L-Lysine, Taurine, and Spirulina for Immune Support and Eye Health $22.90
Sponsored$2290current price $22.90Coco and Luna Multivitamin for Cats - Daily Support - L-Lysine, Taurine, and Spirulina for Immune Support and Eye Health
484.1 out of 5 Stars. 48 reviewsSave withShipping available100+ bought since yesterday Zesty Paws Calming Bites Bacon 30ct - Cat (Pouch) $8.97 $6.90/oz
100+ bought since yesterday
Sponsored$897current price $8.97$6.90/ozZesty Paws Calming Bites Bacon 30ct - Cat (Pouch)
11633.7 out of 5 Stars. 1163 reviewsSave withShipping, arrives tomorrowNatural Herbal Respiratory Support Supplement for Dogs and Cats – Helps Support Throat and Trachea Comfort $19.99
$1999current price $19.99Natural Herbal Respiratory Support Supplement for Dogs and Cats – Helps Support Throat and Trachea Comfort
1054.1 out of 5 Stars. 105 reviewsSpecial Breed L-Lysine for Cats & Kittens – Immune, Respiratory & Eye Health Support – Liquid Cat Supplement with Astragalus, Burdock, Atractylodes, Dangshen & Vitamins A, B1, B2, B6 – 2oz (60mL) $16.95
3 optionsAvailable in additional 3 options$1695current price $16.95Special Breed L-Lysine for Cats & Kittens – Immune, Respiratory & Eye Health Support – Liquid Cat Supplement with Astragalus, Burdock, Atractylodes, Dangshen & Vitamins A, B1, B2, B6 – 2oz (60mL)
664.5 out of 5 Stars. 66 reviewsTomlyn Immune Support Daily L-Lysine Chews for Cats and Kittens, Fish Flavored Lysine Supplement for Cats and Kittens to Support Immune Health, Normal Eye Function and Respiratory Health, 30ct $16.99 56.6 ¢/count
$1699current price $16.9956.6 ¢/countTomlyn Immune Support Daily L-Lysine Chews for Cats and Kittens, Fish Flavored Lysine Supplement for Cats and Kittens to Support Immune Health, Normal Eye Function and Respiratory Health, 30ct
1514.4 out of 5 Stars. 151 reviewsVetRx Cat & Kitten 2 oz - Sneezing Cold Cough - Respiratory Ailments - Allergies $15.49
$1549current price $15.49VetRx Cat & Kitten 2 oz - Sneezing Cold Cough - Respiratory Ailments - Allergies
1293.6 out of 5 Stars. 129 reviewsPet Honesty Multivitamin Overall Wellbeing Omega-3 Supplement Chewables for Cat, Chicken Flavor, 3.7 oz Pouch $15.99 $4.32/oz
Sponsored$1599current price $15.99$4.32/ozPet Honesty Multivitamin Overall Wellbeing Omega-3 Supplement Chewables for Cat, Chicken Flavor, 3.7 oz Pouch
1514.7 out of 5 Stars. 151 reviewsSave withDelivery as soon as 1 hourShipping, arrives tomorrowPickup as soon as 6pmRx Vitamins Amino B K - Cat Vitamin B & Potassium Supplement for Cats - with Amino Acids Taurine & Lysine - Aids in Cat Kidney Support & Immune Support for Cats - Liver & Bacon 4oz $28.39
Sponsored$2839current price $28.39Rx Vitamins Amino B K - Cat Vitamin B & Potassium Supplement for Cats - with Amino Acids Taurine & Lysine - Aids in Cat Kidney Support & Immune Support for Cats - Liver & Bacon 4oz
34.3 out of 5 Stars. 3 reviewsSave withShipping available
Customer ratings & reviews
How item rating is calculated
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |
Showing 1-3 of 22 reviews
Jun 19, 2026
Jacqueline
Top Reviewer
5 out of 5 stars review
Verified Purchase
It is making my 18 year old mean feral cat's mouth sores go away! She is a super picky eater so I smeared it on her leg. She is able lick enough of it off so it helps.
Helpful?7B79LFFKUGO548261899
Apr 24, 2026
Tracey
5 out of 5 stars review
Verified Purchase
cats are so smart. my mean cat that stays away has been all over me since i gave it this product. Its like they know i just have them something to help them. Checked 24 hours later, their typically wet noses have completely dried.
Helpful?7B79LFFKUGO548261899
May 16, 2026
Monique
Top Reviewer
5 out of 5 stars review
Verified Purchase
Have and elderly cat and he loves the flavor so makes it easy to give him. Notice more energy and less shedding.
Helpful?7B79LFFKUGO548261899
