Felisyl L-Lysine Gel for Cats – Boost Immunity & Support Healthy Tissue, Vision & Respiration - Salmon Flavor, Made in the USA - 5 oz
Felisyl L-Lysine Gel for Cats – Boost Immunity & Support Healthy Tissue, Vision & Respiration - Salmon Flavor, Made in the USA - 5 oz
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Felisyl

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.
Current price is $18.993.7 ¢/ea
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Sold by HealthyPets
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4.4 stars out of 5, based on 25 seller reviews(4.4)
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Customer ratings & reviews

4.8 out of 5 stars
stars
51 ratings23 reviews
How item rating is calculated
  1. 5 stars82% (42)
  2. 4 stars16% (8)
  3. 3 stars2% (1)
  4. 2 stars0% (0)
  5. 1 star0% (0)
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Showing 1-3 of 23 reviews

Jun 19, 2026
Jacqueline
Top Reviewer
Sold byHealthyPetsDelivered byWalmart
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
Sold byHealthyPetsDelivered byWalmart
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
Sold byHealthyPetsDelivered byWalmart
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