Felisyl
L-Lysine Gel for Cats (5oz) – Supports Immune, Respiratory, and Eye Health. Eases Sneezing, Runny Nose, and Watery Eyes. Tasty Salmon Flavor - Made in The USA (2 Pack)
L-Lysine Gel for Cats (5oz) – Supports Immune, Respiratory, and Eye Health. Eases Sneezing, Runny Nose, and Watery Eyes. Tasty Salmon Flavor - Made in The USA (2 Pack)
Couldn't load pickup availability
About This
- 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, Made in USA – Manufactured to the highest quality and safety standards set by the National Animal Supplement Council. Felisyl carries the NASC Quality Seal and is proudly made in the USA, so you can trust you’re giving your cat a safe, premium-grade supplement for their well-being.
Overview
- Brand : Felisyl
- Flavor : Salmon
- Item Form : Gel
- Item Weight : 5 Ounces
- Product Benefits : Eye Function Support, Immune Support, Respiratory Health Support
Share

Collections
-
2-Pack Essentials
Keep routines unbroken—double supply, better value.
-
Aquascape & Live Plants
A measured garden under glass—vivid, beginner-friendly species for oxygen and contrast.
-
Best Sellers
Proof by repetition—the pieces customers return to, again and again.
Furr Haven – Where Pets Find Comfort & Care 🐾
Because at Furr Haven, it’s more than just a pet shop—it’s a community built on love, comfort, and care for pets and the people who adore them. ❤️
-
Calming & Mobility Support
Quiet stress and ease movement—omega-rich oils for steadier moods and joints.
-
Crate Pads (Faux-Fur)
Plush, easy-clean pads sized for crates and kennels.
-
For Aquariums
Live plants for balanced scapes.
Blog posts
View all-
Sustainable Serenity — Where Care Meets Craft
A story of care and continuity.“Sustainable Serenity” captures Furr Haven’s commitment to sustainable luxury —ethical design that feels as kind as it looks.Every product, every decision, every touch is a...
Sustainable Serenity — Where Care Meets Craft
A story of care and continuity.“Sustainable Serenity” captures Furr Haven’s commitment to sustainable luxury —ethical design that feels as kind as it looks.Every product, every decision, every touch is a...
-
The Art of Calm — How Comfort Shapes Emotion
A meditation on the emotional power of design.“The Art of Calm” reveals how Furr Haven uses materials, color, and balance to nurture emotional peace —making comfort not a luxury, but...
The Art of Calm — How Comfort Shapes Emotion
A meditation on the emotional power of design.“The Art of Calm” reveals how Furr Haven uses materials, color, and balance to nurture emotional peace —making comfort not a luxury, but...
-
Designing Trust — Safe Beauty for Shared Homes
A reflection on design as care.“Designing Trust” shows how Furr Haven blends safety and beauty into one seamless experience.Every product is a promise — gentle to the touch, strong in...
Designing Trust — Safe Beauty for Shared Homes
A reflection on design as care.“Designing Trust” shows how Furr Haven blends safety and beauty into one seamless experience.Every product is a promise — gentle to the touch, strong in...
Frequently Asked Questions
How long does shipping take?
Shipping takes place within 3-5 business days. If there is a problem with the shipment of the product, we will notify you via the email address you entered when ordering.
How can I get a tracking number for my order?
If your order has been shipped, we will add the tracking number to your order and notify you via the email address you entered when ordering.
Is free shipping available?
We do not currently offer free shipping. However, this may be added at some point. We apologize.
How do I process a return or exchange?
For returns or exchanges, please contact us within 14 days of receiving the product, along with a receipt or screenshot of the purchase, and a photo of the product with the packaging or tag intact.