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The Eye-Immune Health Guide

The Eye-Immune Health Guide

 (1,453 Reviews)

45 soft chews for the watery-eye, morning-crust, sneezing loop — daily eye and immune support in one tuna chew she'll actually eat.

  • Clearer eyes, less morning crust and discharge
  • Eight actives across all four eye-immune pathways — not lysine alone
  • One tuna chew a day, not a pill she fights you on
  • Supports the immune system where the flare-ups actually start
Ships by Fri, Sep 18
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Over 40,000 satisfied cat owners
Shipped From The USA
If any of these sound like your cat, it's for her:
  • Watery, goopy, or crusty eyes, worst in the morning
  • Sneezing fits that come and go
  • A runny or stuffy nose
  • Flare-ups that keep coming back after they seem to clear
  • Lower energy, not quite herself lately
One to two chews a day. Hand them over as a treat or crumble them into food. Most cats take them straight from your hand. Consistency matters more than timing, so pick a moment you'll remember. Most people do it with breakfast.
Most cats treat these like a snack, not a supplement. But if yours turns her nose up, you're covered by our 100-Day Money-Back Guarantee. If she won't touch them, reach out and we'll refund you, no hassle.
We hand-pack and process orders within 1 to 2 business days from our US warehouse. Standard shipping arrives in 4 to 8 days; express in 3 to 5 days. You'll get a tracking link by email so you can follow it to your door.

Full Ingredient Transparency

Every ingredient, every milligram. No proprietary blends, no hidden fillers.

Active Ingredients
Per Serving
L-Lysine300.00 mg
Taurine150.00 mg
Colostrum (Bovine)100.00 mg
Omega-3 Fish Oil150.00 mg
Beta-Glucan25.00 mg
Lactoferrin20.00 mg
Lutein6.00 mg
Probiotics Blend2B CFU
View full details

The Longer She Takes It, The Longer She Thrives

Her gut, her immune system and her eyes rebuild at different speeds. That's why each month does something the month before couldn't.

1
Week 1 Gut
🌱
The probiotic settles her gut first. 70% of her immune system lives there, so everything else gets built on it.
2
Weeks 2 to 4 Immune
🛡️
Colostrum and lactoferrin feed her defenses every day, so her body stops running on empty and starts handling things on its own.
3
Month 2 to 3 Eyes
👀
Lutein, taurine and omega-3 support the eye tissue itself, the part her body renews slowest. Nothing about eyes happens fast, which is why this layer takes the longest.
4
Month 4 and beyond All Three
❤️
Gut, immune and eyes all supported at once, so the support is already in place before she needs it. Small things get handled early instead of turning into something.
One tub shows you the first layer. The rest takes months, which is why most start with 3.
TRY FURRYCORE 🐾
100-Day Money-Back Guarantee

Customer Reviews

★★★★★
4.8 out of 5 · Based on 317 reviews
★★★★★
👤
Ibrahim S. · Aug 26, 2026
Coat looks shinier too

Wasn't expecting this honestly but her coat looks better since we started. Nice little bonus.

Customer photo
★★★★★
👤
Aaron W. · Jul 19, 2026
she loves these lol

she hears the tub open and comes running every time. never thought id say that about a supplement

Customer photo
★★★★★
👤
Colin M. · Jun 6, 2026
Give it time

Almost gave up after week one, nothing seemed different. By week three it was pretty obvious. Glad I kept going.

Customer photo
★★★★★
👤
Ngozi A. · May 17, 2026
Good stuff

Mentioned it to our vet and she said the ingredients looked fine. That was enough for me to keep buying it.

Customer photo
★★★★★
👤
Dante S. · Apr 9, 2026
Works for older cats too

Two weeks in, he can breathe through his nose again and the discharge is basically gone.

Customer photo
★★★★★
👤
Rebecca N. · Mar 22, 2026
All 4 cats on it now

One has FHV, the others don't. Give it to all of them anyway. No flare ups since we started.

Customer photo
★★★★★
👤
Fiona L. · Feb 3, 2026
Finally, a treat she likes

She's picky about everything. Goes straight for these though. Made this a lot easier than I expected.

Customer photo
★★★★★
👤
Owen T. · Sep 30, 2025
Good improvement

Our 14 year old has dealt with watery eyes for years. A month in and it's noticeably better.

Customer photo
★★★★★
👤
Ji-Woo H. · Jan 15, 2026
Easy

She takes it right from my hand, no fighting her to eat it like the old stuff.

★★★★★
👤
Alina F. · Dec 8, 2025
Better than plain lysine

We tried a lysine only chew for months with barely any change. This did more, and her coat looks better too.

★★★★★
👤
Marcus B. · Nov 11, 2025
helped a lot

our rescue always has a runny nose and sneezes nonstop. better within a couple weeks and she likes the taste too

★★★★★
👤
Wendy C. · Oct 21, 2025
Better than powder

Powder always ended up on the counter more than in the cat. This is just simpler.

★★★★★
👤
Harold P. · Aug 19, 2025
Good for rescues

She came to us sneezing constantly with a stuffy nose. A few weeks on this and she's a lot more playful.

★★★★★
👤
Simone D. · Jul 2, 2025
no more eye wiping

used to wipe her eyes every morning. pretty much stopped since we started giving her these

★★★★★
👤
Denise R. · Jun 14, 2025
Slow but steady

Two months in. Flare ups used to happen every few weeks, now it's been over a month since the last one.

★★★★★
👤
Tomás V. · Jun 14, 2025
vet noticed the difference

few weeks in and the change was enough that my vet actually asked what i switched to

★★★★★
👤
Priya K. · Jun 14, 2025
Good product

Less crust in the mornings and she's back to playing more. Feels like herself again.

Frequently Asked Questions

We get it, some cats will sniff something once and walk away like you insulted them.

These are tuna-flavored chews and most cats take them straight from your hand like a treat. If yours is extra stubborn, just crumble one over wet food. She won't even know it's there.

L-Lysine on its own was never the full answer, it's one piece of a much bigger puzzle.

FurryCore pairs lysine with colostrum, beta-glucan, lactoferrin, probiotics, and targeted immune nutrients that all work together from different angles. One ingredient alone can only do so much. Eight working together is a completely different thing.

Most cat parents notice changes within 1 to 3 weeks, less crustiness, healthier eyes, more energy, a cat who actually feels like themselves again.

Stay consistent for a full 30 days. That's when it really clicks.

Yes, and this is where most cat owners first find us.

The runny nose, sneezing attacks, congestion, those usually share the same root cause as the eye issues. When the immune system gets stronger, everything tends to improve together.

I'd really recommend it, especially if another cat in your home is already showing symptoms.

A lot of cats carry underlying issues without showing signs until something triggers it. Stress, a new pet, a change in routine, any of it can bring symptoms out in a cat who seemed perfectly fine yesterday.

Most cats only need one to two chews a day. But if your cat is going through a rough stretch, two chews a day is completely safe. It won't harm her, just gives her immune system a little extra help when she needs it most.

We process orders within 1 to 2 business days from our warehouses. After dispatch, the estimated delivery time varies based on the shipping destination you choose, generally taking between 3 to 5 days.

Your order comes with a tracking number to keep you informed about the status of your shipment.

It's rare, but it happens, some cats are just stubborn like that. If yours won't take to it, our 100-day money-back guarantee has you fully covered. No hassle, no hoops.

If Your Cat Doesn't Look Better, You Pay Nothing

Try it for 100 days. If you're not seeing fewer flare-ups, less sneezing, clearer eyes, and a healthier, happier cat

We'll refund every penny, no questions asked. Your cat deserves a real shot at feeling better. We're not interested in your money if this isn't it.

100-Day Money-Back Guarantee
Not satisfied? Just contact us within 100 days of your purchase, we'll make it right.
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