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🐾 Elevate your cat’s health game—because they deserve the royal treatment!
NOW Foods L-Lysine Powder is a vet-endorsed supplement designed exclusively for cats to support immune resilience, respiratory health, and ocular maintenance. With a pure, flavorless powder that integrates effortlessly into daily meals, it’s a trusted solution for cat owners seeking natural, effective wellness support backed by thousands of positive reviews.

























| ASIN | B016WG7UF8 |
| Active Ingredients | None.No artificial flavors, colors or |
| Active ingredients | None.No artificial flavors, colors or |
| Best Sellers Rank | 64,048 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 32 in L-Lysine Nutritional Supplements |
| Brand | NOW |
| Brand Name | NOW |
| Country Of Origin | USA |
| Customer Reviews | 4.5 out of 5 stars 3,460 Reviews |
| Flavour | Nope |
| Global Trade Identification Number | 00733739044501 |
| Item Form | Powder |
| Item Type Name | Pets, L-Lysine for Cats - 226g |
| Item Volume | 0.62 Millilitres |
| Item Weight | 0.64 Pounds |
| Item form | Powder |
| Item volume | 0.62 Millilitres |
| Item weight | 0.64 Pounds |
| Manufacturer | NOW Foods |
| Manufacturer Part Number | 4450 |
| Model Number | 4450 |
| Number of Items | 1 |
| Product Warranty | See Label |
| Protein | 0 Portion(s) |
| Target Species | Cat |
| UPC | 733739044501 |
| Unit Count | 226.8 gram |
A**R
Has vastly improved my housecat's drippy nose and sneezing
Having spent 2K on seeing 5 vets over four months, this appears to have massively reduced my cat's drippy nose and sneezing and she can now obviously smell more, and as a result, is less of a fussy eater. The vets reached the point where they could offer no more help, other than perhaps a referral for a CT scan, etc. but as my cat was basically otherwise well, and she chooses to remain indoors, this felt unnecessary. We did agree to an anaesthetic and nasal camera, which reassured us that polyps/growths appear unlikely, so before going down that route, I would thoroughly recommend giving this a try. Within 5 days of just a teeny amount in her food, once a day, there was a massive improvement.
M**.
Good for reducing cat flu symptoms
Our cat was struggling with cat flu and so we took her to the vet. A two week course of antibiotics was prescribed, but by the end of the two weeks she was still clearly struggling - sneezing, dribbling, mouth ulcers, overcleaning front and back paws, and conjunctivitis. She was in considerable stress and I didn't think she would survive. Out of desperation, I checked many on-line reviews of this product, and they were mostly very positive, so I purchased a jar of the l-lysin. Our cat's health has improved immensely and she's pretty much back to her normal happy self with bags of energy. I use the product now every day for all four of my cats - just a very light sprinkling on their wet food, and they still eat it. So, I would definitely recommend this product.
L**W
Hopefully helping cat`s immunity
I`ve given it 4 stars as I haven`t been using it very long, so don`t know how effective it will be. My cat has had 2 bouts of runny nose/sneezing (expensive vet visits) He hasn`t had another flare up while I`ve been using this, so will have to wait and see if it reduces his symptoms/length of flare up. He happily eats it mixed in with Lick - e - Lix, and there isn`t any strong smell to put him off
A**E
Seemed to work
Seemed to work, huge bottle last long time.
C**O
This helps!
I know Now is a good brand but never try, turned out it helps with my cat’s eye issue very effective. I used this for around 3 weeks, can see the obvious different. If Now can include a tiny spoon with exact measurement would be a bonus, 1/16 teaspoon is hard to measure 😅
I**A
Good quality product
Fast delivery, well packaged. Highly recommend seller
B**E
Good product
Tried for my cat who has cat flu and surprisingly it did actually help. I was skeptical at first but I have to say it definitely calmed his symptoms during a flare up.
N**E
Haven’t seen a difference
Been using this for a month now. Haven’t noticed a difference in my fur baby or his cat flu!
J**N
Really improved my cat's life
I almost never write product reviews, especially on Amazon. So this is a testament to how well this stuff works. I have an exotic shorthair. Flat face, goopey eyes even on the best of days, trouble breathing, etc. My cat also seems to have almost no sense of smell probably because she has tiny nostrils and respiratory issues - this means she eats only one type of particularly pungent kibble, no interest in any of the 20+ different treat brands I've got her, no interest in wet food, no interest in any human food. I do not agree with the breed, she was a rescue and really is the sweetest cat ever. Her life has been difficult because of her breed specific issues. I've had her on this for around 2 weeks and the difference is astounding. I haven't had to wipe her face at all this week, very little goops (nothing she can't groom off herself), her breathing is way better, and she is taking an interest in other food and sniffing EVERYTHING. I'm shocked. I assumed this would help a bit but she really seems so much more lively and happy. She's acting like an actual cat, playing and running around (which would have tired her out way quicker before), doing cat things she hasn't done before. I've had her for 2 years and I've never seen her like this. YMMV of course, and I can't tell if the results will last long term. But I am very satisfied with this purchase. Also great value. No scoop is included but it's only a 1/8 tsp twice a week sprinkled over her food. This will last easily a year+. She hasn't turned her nose up at it yet so I don't think she notices it's there. Definitely worth a try. Especially if you have a brachycephalic cat breed (flat face).
J**R
Muy bien
Muy bien, rinde mucho
B**L
Lisin
Ist ohne Geschmack sehr gut für die tiere
L**A
Ok!
Usato per gattini che già dopo un mese di vita hanno preso l'herpesvirus dalla mamma..con fatica e dopo mesi posso ritenermi soddisfatta è stato comunque un supporto in più per il loro sistema immunitario!
J**A
Great product to keep on hand!
Absolutely love this product! Not only is it a great price but its so easy to use! Its odorless and tasteless so you can mix it right in with some wet food and you animals will never know! Great quality as ive been using this for a long time and wouldnt change. Its kinda gritty but if mixed well they will never know! It keeps my animals healthy all year long and gives them that immune boost they need! Helps protect against URI!(
Trustpilot
3 weeks ago
3 days ago