--- product_id: 899953 title: "Vetoquinol Viralys, Lysine Powder for Cats and Kittens, 100 g" brand: "vetoquinol" price: "186.35 DT" currency: TND in_stock: true reviews_count: 13 category: "Vetoquinol" url: https://www.desertcart.tn/products/899953-vetoquinol-viralys-lysine-powder-for-cats-and-kittens-100-g store_origin: TN region: Tunisia --- # Easy mix oral powder Eye health focus Immune & respiratory boost Vetoquinol Viralys, Lysine Powder for Cats and Kittens, 100 g **Brand:** vetoquinol **Price:** 186.35 DT **Availability:** βœ… In Stock ## Summary > 🐾 Keep your cats thriving with Viralys β€” the daily lysine boost they actually crave! ## Quick Answers - **What is this?** Vetoquinol Viralys, Lysine Powder for Cats and Kittens, 100 g by vetoquinol - **How much does it cost?** 186.35 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/899953-vetoquinol-viralys-lysine-powder-for-cats-and-kittens-100-g) ## Best For - vetoquinol enthusiasts ## Why This Product - Trusted vetoquinol brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Stress-Free Feeding:** Mixes seamlessly into wet food twice daily, ensuring hassle-free administration even for picky eaters. - β€’ **Targeted Eye Wellness:** Specifically formulated lysine to reduce sticky eye discharge and support healthy ocular function for cats and kittens. - β€’ **Vet-Recommended Formula:** Backed by veterinary approval and trusted by thousands of cat owners for effective herpes flare-up management. - β€’ **Premium Quality Ingredients:** Contains 500mg L-Lysine hydrochloride with enzymatic hydrolyzed fish and poultry liver for optimal absorption and palatability. - β€’ **Daily Immune & Respiratory Support:** Fish & chicken flavored L-Lysine powder that strengthens immune defenses and promotes respiratory health every day. ## Overview Vetoquinol Viralys is a 100g flavored L-Lysine powder designed to support eye health, immune strength, and respiratory wellness in cats and kittens. With 500mg of active L-Lysine hydrochloride per serving, it helps prevent herpes virus flare-ups by suppressing arginine, promoting healthier, happier pets. Easy to mix into wet food and vet-recommended, Viralys is a trusted daily supplement that reduces costly vet visits and keeps your feline companions feeling their best. ## Description Buy Vetoquinol Viralys, Lysine Powder for Cats and Kittens, 100 g | Lysine Supplement for Cats and Kittens to Support Eye, Respiratory and Immune Health, Flavored Oral Powder: L-Lysine - desertcart.com βœ“ FREE DELIVERY possible on eligible purchases Review: GREAT FOR FELINE HERPES! LYSINE SUPRESSES THE AMINO ACID ARGININE, RESPONSIBLE FOR FLARE UPS!!! - I work w/ my local VSA ( voluntary services for animals). I took in a few kittens that's eyes were almost completely shut with crust & their little noses were covered in crust & mucus. A pitiful site :( . I quickly took all 4 to the vet within 24 hrs. WELL, after they said it was "Feline herpes", (an upper respiratory infection that doesn't go away but can be controlled) IT ended up costing me close to $800!! With Vet costs, testing costs, & the "Wonderfully expensive" medication they gave me for Each cat, That helped some but not much!! They had liquid meds, meds that had to be put INTO their eyes like 4xs a day, & some other antibiotics. It was awful , & seriously it didn't help much at all. It lessened it some, but they needed the meds constantly! I looked on the Internet for any info I could find & found out about LYSINE !! I really thought it was a bunch of "bull" but was willing to TRY anything! I 1st bought a paste & a gel- the cats hated it. I then bought this powder. I mixed it into wet food ( not too much or they taste it!) & they ate it! After a week I noticed all their symptoms were really improving! I had STOPPED the Vets meds as the cost was killing me & not really helping them. After a MONTH all the cats were totally better, no crusty gooey eyes, no crusty nose, sneezing, ALL GONE!! I was amazed!! I studied it more, the use of L LYSINE & it's effects. It surpresses what makes the Herpes virus flare up in the system, so taking it on a Dailey basis means you won't get the flare up & the full blown symptoms! It also works in humans as well. I kept the kittens & have given them forms of LYSINE for 2 yrs now & they have NOT had another flare up since! If I stopped it for a few months, I noticed some sneezing & gunk in their eyes in the 1st year & quickly put them back on it! With 5 cats ( I had a 3 yr old when I took these in, she caught feline herpes from them as well!) it's kinda hard to make sure each one gets 250 - 500 mg Ea. When they eat out of each others bowls! So I just put a scoop into 1 3 oz can of wet, feed them 3 cans & it works great. I tried the TREATS, most cats don't care for them, also many brands you have to give each cat like 10 treats 1-2 x a day! Woa! Or another brand the treats were huge! Only 2 a day because they were the size of a golf ball! Lol. So, the cat powdered LYSINE works good, it's flavored mixes well in food & good to start on. I had no luck putting this on DRY food, I have heard many ppl do that but my cats wouldn't eat the food & most just fell to bottom of dish/bowl. I also bought & use HUMAN grade LYSINE 500 mg tablets & crush them up w/ a spoon & mix into wet food. This is VERY cost effective! It taste stronger than this flavored powder, so use a good wet food to mix with & you wont have a problem. My cats got use to it fast. You can also buy LYSINE powder in BULK on here, it's human grade & already finely crushed up. It works GREAT & cost MUCH less. Plus I like that it's "human" grade. I now can skip months at a time with no LYSINE & they still get no flare ups. This LYSINE is a God send! I recommend this powder if starting out, it's flavored and cats will take it well. But cost wise, the pills, tablets, capsule at your store or on here ( cheaper!) are strongest & the best I've found( crush up finely) . bitter, but cats really don't "taste" bitter I've heard. Either WAY or BRAND you choose it will all but cure your cats of the virus, you won't have huge vet bills & expensive meds that are worthless. 5 cats taking LYSINE on & off for 2 yrs and they have NO MORE SYMPTOMS & are very happy healthy spoiled kitty's... So please do yourself, your wallet, & your cats a favor & put them on a LYSINE regimen of 250 mg a day OR - 500 mg 1-2 x's a day for a flare up or to start off with. Once symptoms subside, you can stay with 250 mg a day to keep them away for good! Btw, In order to replicate & cause FLARE UPS , in humans & cats the herpes virus needs "ARGININE" another amino acid such as LYSINE . when LISINE is taken at higher doses, it prevents the amino acid ARGININE from over producing & hence preventing outbreaks of the herpes virus. So just check your pets FOODS, TREATS etc for any ARGININE ( L-ARGININE ) in them as this will ADD to your problem!! There ARE foods with this in the ingredient list I've found, so just FYI to be safe. Hope this helps someone with the problems I went through & learned from along the way!! :) Jenn ~ Review: tl;dr- powder dissolves easily and my fur babies love the flavor - After my one fur baby passed away, her sister was lonely so we decided to get another cat. Well that didn't go well as I was told that the cat had been socialized with humans and other cats... Well that was not true. The new cat was scared of my fur baby and well they both ended up getting stressed to the point that the herpes virus became an upper respiratory infection. -__- I didn't know that was a thing. Well both of them are now doing better and still getting used to each other. BUT they do like this supplement. The powder smells kinda fishy which is off putting for me BUT for them, they LOVE it. Lol I mix it into their wet food and they both gobble up their wet food. So apparently, it just taste good to them. They hated the paste that tastes like maple syrup... It was a struggle to get them to eat it. My fur baby hated the chicken liver flavored treats as well. This is the only one that she likes which is great as she has to eat it twice a day. Trying to force feed the supplement was a pain and added stress to my fur babies. The powder form mixed easily into their wet food and dissolves quickly which is great as my fur baby is a picky picky kitty and will stop eating if she doesn't like the food. -__- The ingredients look great and clean and this supplement is vet recommended which puts my mind at ease. Overall, this worked out the best for me and my fur babies as it made life so much easier for them and for me. Thank goodness!! ## Features - Targeted Eye Health: Primarily to aid against sticky eye discharge, this lysine supplement is specifically formulated to support healthy ocular function and overall eye wellness for cats and kittens of all ages - Daily Immune Support: Vetoquinol Viralys is a fish and chicken flavored L-Lysine powder for cats of all ages that supports immune strength and respiratory health for everyday pet wellness - Respiratory Health Supplement: This powder supplement for kittens and cats offers a daily serving of lysine, helping to support normal respiratory health as part of a regular pet wellness routine - Easy Feeding Oral Powder: This oral powder supplement provides stress-free administration; for best results, mix this pet wellness supplement into cat food twice a day - Confidence in Every Product: Made with a commitment to transparency, rigorous review, and dependable standards upheld across every product, we create happier and healthier moments for your pet ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000FULBT4 | | Active Ingredients | Active ingredients: L-Lysine hydrochloride, 500mg. Inactive ingredients: Brewer’s Dried Yeast, Hydrolyzed Fish (enzymatic), Hydrolyzed Poultry Liver (enzymatic), Mixed Tocopherols (a preservative), Sodium Acid Pyrophosphate, Sodium Sulfate. Active Ingredients Active ingredients: L-Lysine hydrochloride, 500mg. Inactive ingredients: Brewer’s Dried Yeast, Hydrolyzed Fish (enzymatic), Hydrolyzed Poultry Liver (enzymatic), Mixed Tocopherols (a preservative), Sodium Acid Pyrophosphate, Sodium Sulfate. See more | | Best Sellers Rank | #1,617 in Pet Supplies ( See Top 100 in Pet Supplies ) #4 in Cat Multivitamins | | Brand | Vetoquinol | | Brand Name | Vetoquinol | | Customer Reviews | 4.6 out of 5 stars 9,682 Reviews | | Flavor | Flavorless | | Global Trade Identification Number | 00030521041480 | | Included Components | Vetoquinol Viralys Powder, 100gm | | Item Form | Powder | | Item Highlight | Lysine Supplement for Cats and Kittens to Support Eye, Respiratory and Immune Health, Flavored Oral Powder | | Item Weight | 0.27 g | | Manufacturer | Vetoquinol | | Manufacturer Part Number | 410633 | | Model Number | 410633 | | Number of Items | 1 | | Product Benefits | Immune Support | | Specific Uses For Product | Active | | Target Species | Cat | | UPC | 030521041480 884291149927 | | Unit Count | 2.5 Ounce | | Volume | 3.5 fluid ounces | ## Product Details - **Brand:** Vetoquinol - **Flavor:** Flavorless - **Item Form:** Powder - **Item Weight:** 0.27 g ## Images ![Vetoquinol Viralys, Lysine Powder for Cats and Kittens, 100 g - Image 1](https://m.media-amazon.com/images/I/61l0q+Sk6GL.jpg) ![Vetoquinol Viralys, Lysine Powder for Cats and Kittens, 100 g - Image 2](https://m.media-amazon.com/images/I/61-XvRp-OGL.jpg) ![Vetoquinol Viralys, Lysine Powder for Cats and Kittens, 100 g - Image 3](https://m.media-amazon.com/images/I/613Sda1IAuL.jpg) ![Vetoquinol Viralys, Lysine Powder for Cats and Kittens, 100 g - Image 4](https://m.media-amazon.com/images/I/61VcdfXMJ5L.jpg) ![Vetoquinol Viralys, Lysine Powder for Cats and Kittens, 100 g - Image 5](https://m.media-amazon.com/images/I/61Zedj57nGL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: How much lysine in a "scoop" dose? How many doses in a 100 gram jar?** A: Hi, according to what it says on the jar, "contains approximately 500 mg of L-Lysine Hydrochloride in a palatable base" I'm not sure about how many doses in a 100 gram jar (it doesn't say on the jar). I only use it occasionally, so it lasts a really long time for me. They suggest one rounded scoop twice daily. I usually just use one scoop at night in their wet food and it seems to work well enough. The scoop is small, I would guess maybe around 1/8 teaspoon? A very good product at any rate and my cats seem to love the taste and will eat it when mixed in with their wet food. Hope this helps. **Q: What are the ingredients in Vetoquinol Viralys Powder?** A: I want to let people who are giving this product to their cats, what hydrolyzed food ingredients are. Hydrolysis is basically chemical digestion. The protein, in this case fish & liver, is boiled in sulfuric aced for anywhere from several hours to more than a day to break down the proteins. Then lye is added to raise the ph back to neutral. Just what I want to give my cats. Or not!!! This is the trouble with buying from the internet. The full label is usually not available & even when it is, the print is usually so tiny, not to mention blurred, as to be impossible to read. **Q: What is the shelf life?** A: If you buy it from us. To_Your_Health, you will be guaranteed to get the freshest products available. As of today, December 28, 2015, the expiration date on the containers in stock should be December 2017 or better. Thanks. **Q: My cat won't eat wet food & only treats that R crunchy on outside & soft inside. Which might be best chance I have ?** A: The same maker of the this powdered form of L-lysine also makes this supplement is the form of a crunchy treat and a flavored paste (no affiliation). I recommend (as a vet) 500 mg twice daily to begin with, you can titrate up or down to the most effective dose, but always follow the recommendation of your veterinarian. Also note that l-lysine is most effective against the respiratory/ocular symptoms caused by feline herpes virus, a viral (but not venereal) disease most cats have been exposed to and, just like love, herpes virus lasts forever. The amino acid L-lysine is believed to inhibit the recrudescence of the virus during periods of physiologic stress. ## Customer Reviews ### ⭐⭐⭐⭐⭐ GREAT FOR FELINE HERPES! LYSINE SUPRESSES THE AMINO ACID ARGININE, RESPONSIBLE FOR FLARE UPS!!! *by J***Y on June 27, 2013* I work w/ my local VSA ( voluntary services for animals). I took in a few kittens that's eyes were almost completely shut with crust & their little noses were covered in crust & mucus. A pitiful site :( . I quickly took all 4 to the vet within 24 hrs. WELL, after they said it was "Feline herpes", (an upper respiratory infection that doesn't go away but can be controlled) IT ended up costing me close to $800!! With Vet costs, testing costs, & the "Wonderfully expensive" medication they gave me for Each cat, That helped some but not much!! They had liquid meds, meds that had to be put INTO their eyes like 4xs a day, & some other antibiotics. It was awful , & seriously it didn't help much at all. It lessened it some, but they needed the meds constantly! I looked on the Internet for any info I could find & found out about LYSINE !! I really thought it was a bunch of "bull" but was willing to TRY anything! I 1st bought a paste & a gel- the cats hated it. I then bought this powder. I mixed it into wet food ( not too much or they taste it!) & they ate it! After a week I noticed all their symptoms were really improving! I had STOPPED the Vets meds as the cost was killing me & not really helping them. After a MONTH all the cats were totally better, no crusty gooey eyes, no crusty nose, sneezing, ALL GONE!! I was amazed!! I studied it more, the use of L LYSINE & it's effects. It surpresses what makes the Herpes virus flare up in the system, so taking it on a Dailey basis means you won't get the flare up & the full blown symptoms! It also works in humans as well. I kept the kittens & have given them forms of LYSINE for 2 yrs now & they have NOT had another flare up since! If I stopped it for a few months, I noticed some sneezing & gunk in their eyes in the 1st year & quickly put them back on it! With 5 cats ( I had a 3 yr old when I took these in, she caught feline herpes from them as well!) it's kinda hard to make sure each one gets 250 - 500 mg Ea. When they eat out of each others bowls! So I just put a scoop into 1 3 oz can of wet, feed them 3 cans & it works great. I tried the TREATS, most cats don't care for them, also many brands you have to give each cat like 10 treats 1-2 x a day! Woa! Or another brand the treats were huge! Only 2 a day because they were the size of a golf ball! Lol. So, the cat powdered LYSINE works good, it's flavored mixes well in food & good to start on. I had no luck putting this on DRY food, I have heard many ppl do that but my cats wouldn't eat the food & most just fell to bottom of dish/bowl. I also bought & use HUMAN grade LYSINE 500 mg tablets & crush them up w/ a spoon & mix into wet food. This is VERY cost effective! It taste stronger than this flavored powder, so use a good wet food to mix with & you wont have a problem. My cats got use to it fast. You can also buy LYSINE powder in BULK on here, it's human grade & already finely crushed up. It works GREAT & cost MUCH less. Plus I like that it's "human" grade. I now can skip months at a time with no LYSINE & they still get no flare ups. This LYSINE is a God send! I recommend this powder if starting out, it's flavored and cats will take it well. But cost wise, the pills, tablets, capsule at your store or on here ( cheaper!) are strongest & the best I've found( crush up finely) . bitter, but cats really don't "taste" bitter I've heard. Either WAY or BRAND you choose it will all but cure your cats of the virus, you won't have huge vet bills & expensive meds that are worthless. 5 cats taking LYSINE on & off for 2 yrs and they have NO MORE SYMPTOMS & are very happy healthy spoiled kitty's... So please do yourself, your wallet, & your cats a favor & put them on a LYSINE regimen of 250 mg a day OR - 500 mg 1-2 x's a day for a flare up or to start off with. Once symptoms subside, you can stay with 250 mg a day to keep them away for good! Btw, In order to replicate & cause FLARE UPS , in humans & cats the herpes virus needs "ARGININE" another amino acid such as LYSINE . when LISINE is taken at higher doses, it prevents the amino acid ARGININE from over producing & hence preventing outbreaks of the herpes virus. So just check your pets FOODS, TREATS etc for any ARGININE ( L-ARGININE ) in them as this will ADD to your problem!! There ARE foods with this in the ingredient list I've found, so just FYI to be safe. Hope this helps someone with the problems I went through & learned from along the way!! :) Jenn ~ ### ⭐⭐⭐⭐⭐ tl;dr- powder dissolves easily and my fur babies love the flavor *by M***O on June 26, 2026* After my one fur baby passed away, her sister was lonely so we decided to get another cat. Well that didn't go well as I was told that the cat had been socialized with humans and other cats... Well that was not true. The new cat was scared of my fur baby and well they both ended up getting stressed to the point that the herpes virus became an upper respiratory infection. -__- I didn't know that was a thing. Well both of them are now doing better and still getting used to each other. BUT they do like this supplement. The powder smells kinda fishy which is off putting for me BUT for them, they LOVE it. Lol I mix it into their wet food and they both gobble up their wet food. So apparently, it just taste good to them. They hated the paste that tastes like maple syrup... It was a struggle to get them to eat it. My fur baby hated the chicken liver flavored treats as well. This is the only one that she likes which is great as she has to eat it twice a day. Trying to force feed the supplement was a pain and added stress to my fur babies. The powder form mixed easily into their wet food and dissolves quickly which is great as my fur baby is a picky picky kitty and will stop eating if she doesn't like the food. -__- The ingredients look great and clean and this supplement is vet recommended which puts my mind at ease. Overall, this worked out the best for me and my fur babies as it made life so much easier for them and for me. Thank goodness!! ### ⭐⭐⭐⭐⭐ Works great to limit Feline herpes virus symptoms - mixed with some churu and water *by K***R on October 3, 2026* Our cat is a street cat that made her way into our home. She had fleas and needed some medical attention when we initially brought her in but it wasn't until after we moved that we noticed she had some kind of sickness (the stress from the move most likely caused a flare up). After taking her to the vet they determined she has the feline herpes virus. She had been sneezing, seemed itchy and her eyes had some pink colored gunk that was coming out. They recommended a lysine supplement. I tried the tube version of this brand at first and she seemed to like it but it was not easy to measure the amount and mix it in with her food from the tube so I switched to the powder version and it works great. The powder option comes with a little scooper so it's easy to give her the two doses she needs every day. I mix one scoop with a 3rd of a churu tube and a little bit of water and she eats it up. This does not make all of their symptoms go away but I noticed it really helped her feel better. She doesn't seem as itchy, she stopped sneezing and had less pink colored snot coming out. The only reoccuring symptom I still see occasionally is some pink gunk around her eyes. The symptoms that I see when she has a flare up is mostly the eye gunk and loss of appetite but I would highly recommend this to limit the symptoms. ## Frequently Bought Together - Vetoquinol Viralys Daily L-Lysine Powder for Cats and Kittens, Fish Flavored Lysine Supplement for Cats and Kittens to Support Immune Health, Normal Eye Function and Respiratory Health, 100gm - Purina Pro Plan Veterinary Supplements FortiFlora Cat Probiotic Supplement for Cats with Diarrhea - 30 ct. Box - Vetoquinol Viralys Daily L-Lysine Gel for Cats and Kittens, Maple Flavored Lysine Supplement for Cats and Kittens to Support Immune Health, Normal Eye Function and Respiratory Health, 5oz --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/899953-vetoquinol-viralys-lysine-powder-for-cats-and-kittens-100-g](https://www.desertcart.tn/products/899953-vetoquinol-viralys-lysine-powder-for-cats-and-kittens-100-g) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-10-07*