

🐾 Elevate your cat’s health game with pure, certified immune support!
NOW Pet Health L-Lysine Powder is a 100% pure, NASC-certified supplement designed exclusively for cats to support immune, respiratory, and ocular health. Odorless and tasteless, it easily mixes into meals, making it ideal for multi-cat households. Manufactured in the USA by a trusted family-owned company since 1968, this 8-ounce powder ensures premium quality and effective daily immune support for cats of all life stages.





| ASIN | B016WG7UF8 |
| ASIN | B016WG7UF8 |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #27,546 in Health & Household ( See Top 100 in Health & Household ) #32 in L-Lysine Nutritional Supplements #2,069 in Sales & Deals |
| Brand Name | NOW Foods |
| Breed Recommendation | All Breed Sizes |
| Color | White |
| Customer Reviews | 4.5 4.5 out of 5 stars (3,432) |
| Date First Available | September 19, 2015 |
| Date First Available | September 19, 2015 |
| Directions | For use in Cats only. Directions for Use: Can be given during or after mealtime. For cats up to 5 3/4 lbs. = 1/16 teaspoon twice weekly For cats over 6 lbs. = 1/8 teaspoon twice weekly |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 3 x 3 x 5.5 inches |
| Item Package Dimensions L x W x H | 5.39 x 2.95 x 2.83 inches |
| Item Weight | 10.16 ounces |
| Item model number | 4450 |
| Item model number | 4450 |
| Manufacturer | NOW |
| Manufacturer | NOW |
| Model Name | NOW |
| Number of Items | 1 |
| Product Dimensions | 3 x 3 x 5.5 inches; 10.16 ounces |
| Size | 8 OZ |
| Specific Uses for Product | Heart |
| Target Audience Keyword | house-cats, unisex-adult |
J**.
This works so well!
I feed a colony of feral cats, and in the past week, about 7 of them had runny eyes, runny noses and sneezing frequently. They weren't feeling well and not eating as much food as usual. I tried this and within 5 days, they are all recovering. I put a little bit in each bowl once a day. They didn't notice anything unusual about the food, since there is no smell or flavor to it. NOW, they aren't sneezing, their eyes are clearing, and they are feeling much better! This really works and they are so grateful!
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!(
K**C
High quality and good value
I have a cat with feline herpes, and Lysine makes all the difference in her ability to breathe well. This bottle from Now Pet Health is a great value in comparison to the major competing brand I'd been using for years. It works just as well and lasts a little longer for a lower price. It's easy to measure with the tiny included scoop. Without lysine, my cat is congested. When she's congested, she doesn't eat. This is vital to her health. Both of my cats like the taste. I'm thankful to have found this product.
K**Y
A great deal, but does not work for my cat
My cat has feline herpes and is very sneezy and snotty when he goes through flares. He gets Claritin and a lysine supplement every day, and that helps a lot. I usually use Viralys (500mg lysine dose), but wanted to try this supplement since it is cheaper and the dose is lower. Unfortunately, the twice weekly dose did not work for my cat. It's not surprising given that the Viralys is 500mg of lysisne twice a day and the NOW supplement is only 250mg of lysine twice a week. I switched to giving the NOW lysine daily, but he is still sneezing snot everywhere. I may try giving him 2 scoops a day, but it feels like a lot. Anyway, I'm glad this product works for other cats, but we will have to go back to the other supplement once this one runs out.
J**A
Will keep reordering!!
My cat has feline herpes so he suffers from gooey eyes every day and occasional sneezing boogers. I’ve used a previous product before and it made no difference. I decided to try this product and it has been very beneficial for my cat. I no longer have to clean his eyes multiple times a day and can now do a few days without having to clean. The wetness of his eyes has gone drastically down and hardly ever see him sneezing anymore. I also love that I only have to give it to him twice a week instead of daily. There’s a very good amount of the product for the price and has lasted me a long time. The amount is so small so the bottle last awhile, but even tho the serving is small it is still very effective. My cat doesn’t even notice when I put it in his food so I assume there’s no weird taste. Will keep ordering this as my go to lysine product!
L**A
Hope it works!
Just received this today. Also first time trying it out on my cats. They are all going through feline herpesvirus symptoms right now. I’ve tried L-Lysine treats and gel and they won’t touch it. I tried mixing the supplements with wet food and they are not easily fooled. This however does not have smell. Mixes well with wet food. I like the NOW brand so I’m confident that the quality is outstanding. Hoping that the health benefits of this supplement we will see improvements. Time will only tell.
M**B
Works great
Seems to be helping my cat and he’s super picky and eats it just fine mixed in his we food!
J**H
It's Vet recommended. 🤷🏻♀️
Pros: Clean ingredient list ✔️ Large size for the price ✔️ Health benefits are vet recommended ✔️ (this is one of the top recommended companies) Cons: Tastes & smell well tolerated across the pride ❌️ Measuring Scoop ❌️
J**N
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).
A**R
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.
N**M
Easy to administer in pet food
E**L
ممتاز ويقوي مناعة القطط خاصة للزكام المتكرر
K**Y
I decided to try this to hopefully help my mostly feral rescue cats one leaky eye, since I can't touch him to treat it. I give him 1/16th of a tsp in his wet food once every 4 days, he's only had 5 doses and it looks like it's helping his eye already! I included a before and after pictures over the 20 days he's been on it. Looks to be a legit product, and with the dosage size it should last a long time!
Trustpilot
1 month ago
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