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
$17.99
Price: $17.99
(as of Apr 12, 2025 00:49:39 UTC – Details)
From the brand
Felisyl L-lysine Immune System Support Gel is a product designed to support the immune system of cats. L-lysine is an essential amino acid that plays a crucial role in various biological functions, including immune system function.
L-lysine is known to inhibit the replication of the feline herpesvirus, which is a common viral infection in cats that can cause respiratory and eye symptoms.
Immune System Support for Cats
Quality You Can Trust
The seal is an indicator that the product was made by a reputable company that is committed to transparency & ethical practices.
Immune System Support for Cats
Product Dimensions : 8 x 3 x 2 inches; 5 ounces
Item model number : FEL6547
Date First Available : December 15, 2013
Manufacturer : Pet Health Solutions / HealthyPets, Inc.
ASIN : B00MO9SHBE
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.
Customers say
Customers find the lysine gel effective at preventing sniffles and sneezes, and appreciate that their cats enjoy the salmon flavor. The product is easy to administer, and one customer notes its gel-like consistency. Opinions about value for money are mixed, with some finding it good priced while others say it’s not worth the cost. The smell receives mixed reactions, with some finding it not overpowering while others describe it as a fishy mess.
AI-generated from the text of customer reviews
8 reviews for 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
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$17.99
Hallls –
Tastes better than Enisyl-F, works, cats love it
I have 13 foster cats, so I could see how a lot of cats respond to the taste of Felisyl. Most would lap it up like a treat. I couldnât get any of the cats to eat Enisyl-F on its own, had to do the paw and foreleg smear. The picky eaters still shun this one. After one picky eater saw others going after it, though, he changed his mind and will now eat it if others are around trying to get it. But most of the cats I have to hold off while I give it to the ones that actually need it. They just lick it out of the measuring spoon.I was skeptical because it was so much cheaper than Enisyl-F. Works just as well, though, and also has the NASC seal. Fraction of the price AND the cats eat it willingly. Very glad I tried this. So much easier than the paw/foreleg smear (for that to work, it needs to be really smeared into the fur, not just swiped on top or they will flick it off, itâs messy and a pain). Also, so much cheaper. Double win!
Ariel K. –
Not sure if this works UPDATED!! Changed to 5 stars
**updated post after 72hours**I have been giving the recommended dose to my pregnant cat as well as my 6 month old kitten. My kitten is still super healthy, and the pregnant stray cat I brought indoors after being on this for 72hours is TONS BETTER!! She does still have minor nose discharge but we are keeping that clean with baby infant nasal mist, her discharge is no longer green anymore thankfully! She seems to be most the way past this sickness and with no history on her whatsoever itâs hard to know how long she was sick but when I took her in she was pretty bad off. This stuff is incredible! I am buying more. I will add as well, my kitten will be sleeping and I put a dab of this on my finger and put it front of her nose while she sleeps, she canât wake up fast enough to eat it off my finger LOL! Pregnant kitty actually enjoys it now as well since she can smell again, she laps it right up off my finger and wants more and more (of course we are not doing that, however she seems to think more is better) very happy and satisfied with this product! As long as it continues to work we will continue to buy and I will continue to keep this post updated!I took in a stray pregnant cat that no one was wanting to help. She has a UTI and is really struggling, vets are so outrageously overpriced I did some research and found this for her. For starters her nose is clogged so she canât smell it and therefore has no interest in it, but I still take the recrommended dosing and put it just UNDER her nose but above her mouth so she is forced to lick it and swallow it. That has been working for us very well, my young kitten (6months old) I have, is also getting this to keep her from getting sick and she absolutely loves this! We are on day 1 1/2 of this giving to the stray kitty and I do notice a decrease in her symptoms thankfully! I also use infant baby nasal mist to attempt to keep her nose clear much as I can without stressing her out more then she needs to be right now. I gave this 4 stars because Iâm not certain if itâs this or the baby nasal mist that is helping the most yet. I am also using a humidifier to help that congestion break up. I will come back in a couple weeks with an update of this stuff, to say if it actually works but for now Iâm giving it 4 stars until I can confirm it works.Side note her eyes are not goopy anymore and when I first brought her inside, her eyes were pretty gross. I have not touched her eyes at all so I know this is at least working for that.
Sarah Neff –
works well!
my kitten went to the vet for a cold, and after finishing his around of antibiotics he still wasn’t 100%, i found this online and 48 hours later his eyes don’t have gunk in them, he’s not sneezing anymore and he’s even playing and running like he did before he got his little cold! he loves it, no fight to get him to lick the paste.
Theresa –
Great tasting!
My kitten loves this flavor! So much better than the maple flavor the vet sold me and cheaper too!
CvC –
Health improved
My elderly cat loves the taste and seems to be healthier overall after using it for a few weeks.I put it on my finger and she licks it off – twice a day.
Duckie –
Golden Gel!
This was so helpful!! One of my cats had runny eyes, lethargy, and loss of appetite for 3 days, I bought this and not only did he immediately eat it (after days of refusing wet food and treats) but within 12 hours his appetite was back and with 2 days his eyes and energy levels were back to normal! I also offered it to my other 2 cats and they loved it too, thatâs something only dairy flavored temptations has been able to accomplish before now (#pickyeaters)! ðð my cat that was sick definitely couldâve gotten over the virus within that time period but with how quickly his appetite was back I think this gel definitely helped speed up the recovery!
Kinda Strange Kreations –
Pass
I wouldn’t buy again. I got a eye rinse on amazon that was much cheaper, lasts much longer, and out preformed this stuff by far. This stuff works for sure, but symptoms come back quickly. Rinse works extended time.Also giving this so often to my cats made them not like it & they got sick from it a few times so I stopped daily treatment. Will finish this bottle cuz its expensive but definitely won’t buy again. Look for the eye rinse! If you can get someone to gold their neck its a breeze
Amy Rain –
Apparently it is a delicious treat for my cats
I purchased a different brand with lysine. Both of my cats refused. But my friends cats liked it. This one is a perfect one for my spoiled kitties 🙂